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Archive 2018Loxia 25 VS Batis 25mm Big Bronco
p.4 #1Loxia 25 VS Batis 25mm Big Bronco
GMPhotography wrote:
I do think the GM 24-70 at 24mm would give it a good run at it. That zoom at 24mm is quite good. Given what I’m seeing at F2 on the Batis it’s not really a advantage. It’s okay at F2 but clearly better at F2.5
I think you got this right Guy!
Two weeks ago I purchased a 24-70GM and I've been very impressed with it. This copy performs much better than the one I previously owned and thought was already great. (Especially at 50-70mm)
Yesterday I tested it against the Loxia 25/2.4 and had to zoom it to about 26mm to match their AOV. So, another confirmation that the Loxia is a true 25mm or even slightly narrower. The center is actually slightly better for the zoom starting at f/2.8 (!!) and that's focusing both lenses at center. That was surprising to me since the Loxia has great levels of micro-contrast and high resolution at f/2.8. At mid-zone, they were very similar and the corners look slightly better for the Loxia. The GM also has some field curvature but not as much as the Loxia. (Similar in shape though)
Here is the center comparison at f/2.8:
GM @26mm (Left)
Loxia 25 (Right)
PS: Before someone say my Loxia copy may not be optimum, it performs better than my Loxia 21 or any other prime I've tried to date. The GM zoom is optimum at 24-28mm and has almost twice as many elements compared to the Loxia...So we should not be that surprised by this.
I also thought of repeating my favorite focal lengths with AF primes (25/40/85) but preferred getting one high IQ AF zoom lens for this range. I thought about grabbing the Tamron but much prefer the GM's colors and rendering.
Center @f/2.8: GM LEFT | Loxia RIGHT (Both focused at center)
Extreme edge wide-open: GM LEFT | Loxia RIGHT (Both focused at corner)
I do think the GM 24-70 at 24mm would give it a good run at it. That zoom at 24mm is quite good. Given what I’m seeing at F2 on the Batis it’s not really a advantage. It’s okay at F2 but clearly better at F2.5
I think you got this right Guy!
Two weeks ago I purchased a 24-70GM and I've been very impressed with it. This copy performs much better than the one I previously owned and thought was already great. (Especially at 50-70mm)
Yesterday I tested it against the Loxia 25/2.4 and had to zoom it to about 26mm to match their AOV. So, another confirmation that the Loxia is a true 25mm or even slightly narrower. The center is actually slightly better for the zoom starting at f/2.8 (!!) and that's focusing both lenses at center. That was surprising to me since the Loxia has great levels of micro-contrast and high resolution at f/2.8. At mid-zone, they were very similar and the corners look slightly better for the Loxia. The GM also has some field curvature but not as much as the Loxia. (Similar in shape though)
Here is the center comparison at f/2.8:
GM @26mm (Left)
Loxia 25 (Right)
PS: Before someone say my Loxia copy may not be optimum, it performs better than my Loxia 21 or any other prime I've tried to date. The GM zoom is optimum at 24-28mm and has almost twice as many elements compared to the Loxia...So we should not be that surprised by this.
I also thought of repeating my favorite focal lengths with AF primes (25/40/85) but preferred getting one high IQ AF zoom lens for this range. I thought about grabbing the Tamron but much prefer the GM's colors and rendering.
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Center @f/2.8: GM LEFT | Loxia RIGHT (Both focused at center)
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Extreme edge wide-open: GM LEFT | Loxia RIGHT (Both focused at corner)
Aug 05, 2018 at 10:17 AM
p.4 #2Loxia 25 VS Batis 25mm Big Bronco
Thanks Fred for reminding me why I like my GM 24-70 so much!
Aug 05, 2018 at 10:43 AM
p.4 #3Loxia 25 VS Batis 25mm Big Bronco
Yea this does not surprise me at all. My GM was really good from 24-50 than kind of fell off from there . Obviously size weight issues come into play and I do have the Tammy 28-75 which for its purpose is fine. I won’t use it outside PR work though so I benefit on size,weight and cost. But if one is willing to go the GM zoom route at 25mm it’s dang good no question. Another great lens although big as heck is the Sigma 24-35 which is really really good but also very limited on focal lengths. Than with a adapter got to be a truck. But still very very good at 24mm. Another I don’t know for sure as I have not shot it yet is the GM 16-35 2.8. So on the AF side you have some choices. On the manual side you got the Loxia 25 and don’t look any further. Lol
Aug 05, 2018 at 10:46 AM
p.4 #4Loxia 25 VS Batis 25mm Big Bronco
I think the GM is also better corrected for LoCA compared to the Batis @25mm. I have not compared them side-by-side but the GM performs similarly to the Loxia in this regard and the latter is better than the Batis. The FE 16-35GM probably matches this at center but I don't think the corners perform as great @24mm. (I tried more than 4 copies of it)
Like you wrote, you trade range flexibility for size and weight. I think the Batis weighs only 335g while the GM is 885g. However, if one start carrying 25/40/85 AF primes, the GM would seem lighter in comparison. :-)
GMPhotography wrote:
Yea this does not surprise me at all. My GM was really good from 24-50 than kind of fell off from there . Obviously size weight issues come into play and I do have the Tammy 28-75 which for its purpose is fine. I won’t use it outside PR work though so I benefit on size,weight and cost. But if one is willing to go the GM zoom route at 25mm it’s dang good no question. Another great lens although big as heck is the Sigma 24-35 which is really really good but also very limited on focal lengths. Than...Show more →
Like you wrote, you trade range flexibility for size and weight. I think the Batis weighs only 335g while the GM is 885g. However, if one start carrying 25/40/85 AF primes, the GM would seem lighter in comparison. :-)
GMPhotography wrote:
Yea this does not surprise me at all. My GM was really good from 24-50 than kind of fell off from there . Obviously size weight issues come into play and I do have the Tammy 28-75 which for its purpose is fine. I won’t use it outside PR work though so I benefit on size,weight and cost. But if one is willing to go the GM zoom route at 25mm it’s dang good no question. Another great lens although big as heck is the Sigma 24-35 which is really really good but also very limited on focal lengths. Than...Show more →
Aug 05, 2018 at 10:55 AM
p.4 #5Loxia 25 VS Batis 25mm Big Bronco
Fred Miranda wrote:
I think you got this right Guy!
Two weeks ago I purchased a 24-70GM from the buy and sell board and I've been very impressed with it. This copy performs much better than the one I previously owned and thought was already great. (Especially at 50-70mm)
Yesterday I tested it against the Loxia 25/2.4 and had to zoom it to about 26mm to match their AOV. So, another confirmation that the Loxia is a true 25mm or even slightly narrower. The center is actually slightly better for the zoom starting at f/2.8 (!!) and that's focusing both lenses at center. That...Show more →
Very striking result and a tribute to persistence in exploring lens qualities and comparisons.
To my eyes. the GM looks better even in many parts of the edge comparison, while the Loxia looks better in others. For example, in the light grey-brown reedy brush about an inch off the bottom left corner, the GM seems to resolve more differentiation of the reeds than does the Loxia.
GMPhotography wrote
I do think the GM 24-70 at 24mm would give it a good run at it. That zoom at 24mm is quite good. Given what I’m seeing at F2 on the Batis it’s not really a advantage. It’s okay at F2 but clearly better at F2.5Two weeks ago I purchased a 24-70GM from the buy and sell board and I've been very impressed with it. This copy performs much better than the one I previously owned and thought was already great. (Especially at 50-70mm)
Yesterday I tested it against the Loxia 25/2.4 and had to zoom it to about 26mm to match their AOV. So, another confirmation that the Loxia is a true 25mm or even slightly narrower. The center is actually slightly better for the zoom starting at f/2.8 (!!) and that's focusing both lenses at center. That...Show more →
Very striking result and a tribute to persistence in exploring lens qualities and comparisons.
To my eyes. the GM looks better even in many parts of the edge comparison, while the Loxia looks better in others. For example, in the light grey-brown reedy brush about an inch off the bottom left corner, the GM seems to resolve more differentiation of the reeds than does the Loxia.
Aug 05, 2018 at 01:45 PM
p.4 #6Loxia 25 VS Batis 25mm Big Bronco
chiron wrote:
I think you got this right Guy!
Two weeks ago I purchased a 24-70GM from the buy and sell board and I've been very impressed with it. This copy performs much better than the one I previously owned and thought was already great. (Especially at 50-70mm)
Yesterday I tested it against the Loxia 25/2.4 and had to zoom it to about 26mm to match their AOV. So, another confirmation that the Loxia is a true 25mm or even slightly narrower. The center is actually slightly better for the zoom starting at f/2.8 (!!) and that's focusing both lenses at center. That was surprising to me since the Loxia has great levels of micro-contrast and high resolution at f/2.8. At mid-zone, they were very similar and the corners look slightly better for the Loxia. The GM also has some field curvature but not as much as the Loxia. (Similar in shape though)
Here is the center comparison at f/2.8:
GM @26mm (Left)
Loxia 25 (Right)
PS: Before someone say my Loxia copy may not be optimum, it performs better than my Loxia 21 or any other prime I've tried to date. The GM zoom is optimum at 24-28mm and has almost twice as many elements compared to the Loxia...So we should not be that surprised by this.
I also thought of repeating my favorite focal lengths in AF primes (25/40/85) but preferred getting one high IQ AF zoom lens for this range. I thought about grabbing the Tamron but much prefer the GM's colors and rendering.Very striking result and a tribute to persistence in exploring lens qualities and comparisons.
To my eyes. the GM looks better even in many parts of the edge comparison, while the Loxia looks better in others. For example, in the light grey-brown reedy brush about an inch off the bottom left corner, the GM seems to resolve more differentiation of the reeds than does the Loxia.
Honestly the 24-70GM is so good, it could be my only landscape lens. (Perhaps only adding the tiny CV 15/4.5 III for wider scenes). Sunstars are actually well defined at f/16.
Once it was my only lens in a shooting at Mono Lake and it did well. Here are some samples:
(some where focus stacked and others used the SR app, so EXIF is not reliable except for FL)
Sunstar sample at f/16
Fred Miranda wrote
GMPhotography wrote
I do think the GM 24-70 at 24mm would give it a good run at it. That zoom at 24mm is quite good. Given what I’m seeing at F2 on the Batis it’s not really a advantage. It’s okay at F2 but clearly better at F2.5Two weeks ago I purchased a 24-70GM from the buy and sell board and I've been very impressed with it. This copy performs much better than the one I previously owned and thought was already great. (Especially at 50-70mm)
Yesterday I tested it against the Loxia 25/2.4 and had to zoom it to about 26mm to match their AOV. So, another confirmation that the Loxia is a true 25mm or even slightly narrower. The center is actually slightly better for the zoom starting at f/2.8 (!!) and that's focusing both lenses at center. That was surprising to me since the Loxia has great levels of micro-contrast and high resolution at f/2.8. At mid-zone, they were very similar and the corners look slightly better for the Loxia. The GM also has some field curvature but not as much as the Loxia. (Similar in shape though)
Here is the center comparison at f/2.8:
GM @26mm (Left)
Loxia 25 (Right)
PS: Before someone say my Loxia copy may not be optimum, it performs better than my Loxia 21 or any other prime I've tried to date. The GM zoom is optimum at 24-28mm and has almost twice as many elements compared to the Loxia...So we should not be that surprised by this.
I also thought of repeating my favorite focal lengths in AF primes (25/40/85) but preferred getting one high IQ AF zoom lens for this range. I thought about grabbing the Tamron but much prefer the GM's colors and rendering.
To my eyes. the GM looks better even in many parts of the edge comparison, while the Loxia looks better in others. For example, in the light grey-brown reedy brush about an inch off the bottom left corner, the GM seems to resolve more differentiation of the reeds than does the Loxia.
Honestly the 24-70GM is so good, it could be my only landscape lens. (Perhaps only adding the tiny CV 15/4.5 III for wider scenes). Sunstars are actually well defined at f/16.
Once it was my only lens in a shooting at Mono Lake and it did well. Here are some samples:
(some where focus stacked and others used the SR app, so EXIF is not reliable except for FL)
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Sunstar sample at f/16
Aug 05, 2018 at 02:07 PM
p.4 #7Loxia 25 VS Batis 25mm Big Bronco
Its pretty thoughtful to go through all this for the benefit of others....hell,I'm tired just flippin thru the posts!
Aug 05, 2018 at 08:24 PM
p.4 #8Loxia 25 VS Batis 25mm Big Bronco
Fred Miranda wrote:
I think you got this right Guy!
Two weeks ago I purchased a 24-70GM from the buy and sell board and I've been very impressed with it. This copy performs much better than the one I previously owned and thought was already great. (Especially at 50-70mm)
Yesterday I tested it against the Loxia 25/2.4 and had to zoom it to about 26mm to match their AOV. So, another confirmation that the Loxia is a true 25mm or even slightly narrower. The center is actually slightly better for the zoom starting at f/2.8 (!!) and that's focusing both lenses at center. That was surprising to me since the Loxia has great levels of micro-contrast and high resolution at f/2.8. At mid-zone, they were very similar and the corners look slightly better for the Loxia. The GM also has some field curvature but not as much as the Loxia. (Similar in shape though)
Here is the center comparison at f/2.8:
GM @26mm (Left)
Loxia 25 (Right)
PS: Before someone say my Loxia copy may not be optimum, it performs better than my Loxia 21 or any other prime I've tried to date. The GM zoom is optimum at 24-28mm and has almost twice as many elements compared to the Loxia...So we should not be that surprised by this.
I also thought of repeating my favorite focal lengths in AF primes (25/40/85) but preferred getting one high IQ AF zoom lens for this range. I thought about grabbing the Tamron but much prefer the GM's colors and rendering.Very striking result and a tribute to persistence in exploring lens qualities and comparisons.
To my eyes. the GM looks better even in many parts of the edge comparison, while the Loxia looks better in others. For example, in the light grey-brown reedy brush about an inch off the bottom left corner, the GM seems to resolve more differentiation of the reeds than does the Loxia.Honestly the 24-70GM is so good, it could be my only landscape lens. (Perhaps only adding the tiny CV 15/4.5 III for wider scenes). Sunstars are actually well defined at f/16.
Once it was my only lens in a shooting at Mono Lake and it did well. Here are some samples:
(some where focus stacked and others used the SR app, so EXIF is not reliable except for FL)
congratulations for a perfect copy of GM!
has 70mm been tested as well? Thanks!
i'm about to try another 2470GM, as my current copy has slightly decentered in right corners from 50-70
chiron wrote
Fred Miranda wrote
GMPhotography wrote
I do think the GM 24-70 at 24mm would give it a good run at it. That zoom at 24mm is quite good. Given what I’m seeing at F2 on the Batis it’s not really a advantage. It’s okay at F2 but clearly better at F2.5Two weeks ago I purchased a 24-70GM from the buy and sell board and I've been very impressed with it. This copy performs much better than the one I previously owned and thought was already great. (Especially at 50-70mm)
Yesterday I tested it against the Loxia 25/2.4 and had to zoom it to about 26mm to match their AOV. So, another confirmation that the Loxia is a true 25mm or even slightly narrower. The center is actually slightly better for the zoom starting at f/2.8 (!!) and that's focusing both lenses at center. That was surprising to me since the Loxia has great levels of micro-contrast and high resolution at f/2.8. At mid-zone, they were very similar and the corners look slightly better for the Loxia. The GM also has some field curvature but not as much as the Loxia. (Similar in shape though)
Here is the center comparison at f/2.8:
GM @26mm (Left)
Loxia 25 (Right)
PS: Before someone say my Loxia copy may not be optimum, it performs better than my Loxia 21 or any other prime I've tried to date. The GM zoom is optimum at 24-28mm and has almost twice as many elements compared to the Loxia...So we should not be that surprised by this.
I also thought of repeating my favorite focal lengths in AF primes (25/40/85) but preferred getting one high IQ AF zoom lens for this range. I thought about grabbing the Tamron but much prefer the GM's colors and rendering.
To my eyes. the GM looks better even in many parts of the edge comparison, while the Loxia looks better in others. For example, in the light grey-brown reedy brush about an inch off the bottom left corner, the GM seems to resolve more differentiation of the reeds than does the Loxia.
Once it was my only lens in a shooting at Mono Lake and it did well. Here are some samples:
(some where focus stacked and others used the SR app, so EXIF is not reliable except for FL)
congratulations for a perfect copy of GM!
has 70mm been tested as well? Thanks!
i'm about to try another 2470GM, as my current copy has slightly decentered in right corners from 50-70
Aug 11, 2018 at 10:22 PM
p.4 #9Loxia 25 VS Batis 25mm Big Bronco
Ive have had an outstanding copy of the Canon 24-70 2.8 II. I really wanted to go native and Ive tried LOTS of samples of the Sony 24-70GM, 24-105's, Tammy 28-75 etc as I am a pro dealer. There has never been any of them that got me excited enough to put my Canon up for sale. It wasnt that they were all decentred or anything, they just simply weren't as sharp across the frame.
Until... About a week ago I traded a mint copy of the 24-70GM in. I decided to test this lens out in the vain hope it might be a challenger. Wow! I found a good one! Its as good as the Canon (which is saying something) and potentially as good as a lot of primes. Its off the pace a little at the 70mm end but that's not really an issue for me... Very happy. I still prefer real MF but again, I can live with that for a sharp copy
Until... About a week ago I traded a mint copy of the 24-70GM in. I decided to test this lens out in the vain hope it might be a challenger. Wow! I found a good one! Its as good as the Canon (which is saying something) and potentially as good as a lot of primes. Its off the pace a little at the 70mm end but that's not really an issue for me... Very happy. I still prefer real MF but again, I can live with that for a sharp copy
Aug 12, 2018 at 01:40 AM
p.4 #10Loxia 25 VS Batis 25mm Big Bronco
photomadnz wrote:
Ive have had an outstanding copy of the Canon 24-70 2.8 II. I really wanted to go native and Ive tried LOTS of samples of the Sony 24-70GM, 24-105's, Tammy 28-75 etc as I am a pro dealer. There has never been any of them that got me excited enough to put my Canon up for sale. It wasnt that they were all decentred or anything, they just simply weren't as sharp across the frame.
Until... About a week ago I traded a mint copy of the 24-70GM in. I decided to test this lens out in the vain hope it...Show more →
I've also tested the 24-70GM against a good copy of the Canon version. The Canon has more CA, slightly less astigmatism and better corners at 70mm wide open. However, I'd give the GM the upper hand for resolution, color rendition and OOF smoothness. Having said that, my current copy is much better than my previous at 50-70mm so it may be a wash regarding corner resolution at the long end.
Ive have had an outstanding copy of the Canon 24-70 2.8 II. I really wanted to go native and Ive tried LOTS of samples of the Sony 24-70GM, 24-105's, Tammy 28-75 etc as I am a pro dealer. There has never been any of them that got me excited enough to put my Canon up for sale. It wasnt that they were all decentred or anything, they just simply weren't as sharp across the frame.
Until... About a week ago I traded a mint copy of the 24-70GM in. I decided to test this lens out in the vain hope it...Show more →
I've also tested the 24-70GM against a good copy of the Canon version. The Canon has more CA, slightly less astigmatism and better corners at 70mm wide open. However, I'd give the GM the upper hand for resolution, color rendition and OOF smoothness. Having said that, my current copy is much better than my previous at 50-70mm so it may be a wash regarding corner resolution at the long end.
Aug 14, 2018 at 08:35 AM
p.4 #11Loxia 25 VS Batis 25mm Big Bronco
A couple of quick thoughts...
1) Whether the Loxia is able to get sharper in the corners and center if it is focused in each spot seems somewhat moot, since in a practical real world application it will be focused in only one of those spots, and the other will be weaker.
2) Are we sure that the FoV difference is entirely on the Batis' end? I thought I recalled reading when the Loxia first launched that many felt the true FoV was narrower than 25. Could this be more of a 24 vs. 26 difference rather than 23 vs. 25?
1) Whether the Loxia is able to get sharper in the corners and center if it is focused in each spot seems somewhat moot, since in a practical real world application it will be focused in only one of those spots, and the other will be weaker.
2) Are we sure that the FoV difference is entirely on the Batis' end? I thought I recalled reading when the Loxia first launched that many felt the true FoV was narrower than 25. Could this be more of a 24 vs. 26 difference rather than 23 vs. 25?
Aug 14, 2018 at 02:48 PM
p.4 #12Loxia 25 VS Batis 25mm Big Bronco
Vcize wrote:
A couple of quick thoughts...
1) Whether the Loxia is able to get sharper in the corners and center if it is focused in each spot seems somewhat moot, since in a practical real world application it will be focused in only one of those spots, and the other will be weaker.
2) Are we sure that the FoV difference is entirely on the Batis' end? I thought I recalled reading when the Loxia first launched that many felt the true FoV was narrower than 25. Could this be more of a 24 vs. 26 difference rather than 23 vs. 25?
(1) yes but if you focus in the midfield stopped down only a little, the entire field is tack sharp due to DOF. Focus in one direction and corners stay sharp and centre loses a bit, focus in the other and centre stays sharp and corners lose a bit,
(2) possibly. But very hard to tell without fancy measuring gear. People make these judgements by comparing with their favourite 24 or 25 which they assume has the same focal length as on the tin, but of course none do exactly..
A couple of quick thoughts...
1) Whether the Loxia is able to get sharper in the corners and center if it is focused in each spot seems somewhat moot, since in a practical real world application it will be focused in only one of those spots, and the other will be weaker.
2) Are we sure that the FoV difference is entirely on the Batis' end? I thought I recalled reading when the Loxia first launched that many felt the true FoV was narrower than 25. Could this be more of a 24 vs. 26 difference rather than 23 vs. 25?
(1) yes but if you focus in the midfield stopped down only a little, the entire field is tack sharp due to DOF. Focus in one direction and corners stay sharp and centre loses a bit, focus in the other and centre stays sharp and corners lose a bit,
(2) possibly. But very hard to tell without fancy measuring gear. People make these judgements by comparing with their favourite 24 or 25 which they assume has the same focal length as on the tin, but of course none do exactly..
Aug 14, 2018 at 04:08 PM
p.4 #13Loxia 25 VS Batis 25mm Big Bronco
Vcize wrote:
A couple of quick thoughts...
1) Whether the Loxia is able to get sharper in the corners and center if it is focused in each spot seems somewhat moot, since in a practical real world application it will be focused in only one of those spots, and the other will be weaker.
Not if you focus stack to get optimal sharpness throughout the whole image.
Regarding the FOV, the Loxia seems close to 25 at infinity, but if you focus nearby (as I often do in stacking) it is definitely longer because it has substantial focus breathing (approaching 10% by my measurements). I consider it about a 26mm for my typical near-far landscapes, and possibly even longer when I get really close.
Here is a link to a quick comparison between Loxia and Milvus 25 showing how much more focus breathing the Loxia has.
A couple of quick thoughts...
1) Whether the Loxia is able to get sharper in the corners and center if it is focused in each spot seems somewhat moot, since in a practical real world application it will be focused in only one of those spots, and the other will be weaker.
Not if you focus stack to get optimal sharpness throughout the whole image.
Regarding the FOV, the Loxia seems close to 25 at infinity, but if you focus nearby (as I often do in stacking) it is definitely longer because it has substantial focus breathing (approaching 10% by my measurements). I consider it about a 26mm for my typical near-far landscapes, and possibly even longer when I get really close.
Here is a link to a quick comparison between Loxia and Milvus 25 showing how much more focus breathing the Loxia has.
Aug 14, 2018 at 04:42 PM
p.4 #14Loxia 25 VS Batis 25mm Big Bronco
DavidBM wrote:
1) Whether the Loxia is able to get sharper in the corners and center if it is focused in each spot seems somewhat moot, since in a practical real world application it will be focused in only one of those spots, and the other will be weaker.
2) Are we sure that the FoV difference is entirely on the Batis' end? I thought I recalled reading when the Loxia first launched that many felt the true FoV was narrower than 25. Could this be more of a 24 vs. 26 difference rather than 23 vs. 25?(1) yes but if you focus in the midfield stopped down only a little, the entire field is tack sharp due to DOF. Focus in one direction and corners stay sharp and centre loses a bit, focus in the other and centre stays sharp and corners lose a bit,
(2) possibly. But very hard to tell without fancy measuring gear. People make these judgements by comparing with their favourite 24 or 25 which they assume has the same focal length as on the tin, but of course none do exactly..
Something interesting I found between Loxia 21 and 25 lenses.
Their FC shape is a bit different. Both need a slight tad before their hard stops for optimal resolution across the field but the Loxia 25's corners looks pretty much optimal when focusing on center. The curvature is more towards the mid-zone so it seems more wavy compared to the Lox 21's.
Vcize wrote
A couple of quick thoughts...1) Whether the Loxia is able to get sharper in the corners and center if it is focused in each spot seems somewhat moot, since in a practical real world application it will be focused in only one of those spots, and the other will be weaker.
2) Are we sure that the FoV difference is entirely on the Batis' end? I thought I recalled reading when the Loxia first launched that many felt the true FoV was narrower than 25. Could this be more of a 24 vs. 26 difference rather than 23 vs. 25?
(2) possibly. But very hard to tell without fancy measuring gear. People make these judgements by comparing with their favourite 24 or 25 which they assume has the same focal length as on the tin, but of course none do exactly..
Something interesting I found between Loxia 21 and 25 lenses.
Their FC shape is a bit different. Both need a slight tad before their hard stops for optimal resolution across the field but the Loxia 25's corners looks pretty much optimal when focusing on center. The curvature is more towards the mid-zone so it seems more wavy compared to the Lox 21's.
Aug 17, 2018 at 04:18 PM
p.4 #15Loxia 25 VS Batis 25mm Big Bronco
Fred Miranda wrote:
Something interesting I found between Loxia 21 and 25 lenses.
Their FC shape is a bit different. Both need a slight tad before their hard stops for optimal resolution across the field but the Loxia 25's corners looks pretty much optimal when focusing on center. The curvature is more towards the mid-zone so it seems more wavy compared to the Lox 21's.
That is interesting, Fred. Maybe it's sample variation. My Loxia 25 and 21 behave identically to each other, with best corner focus right at the hard stop, and gradually moving slightly closer as you go to midfield and then centre.
Something interesting I found between Loxia 21 and 25 lenses.
Their FC shape is a bit different. Both need a slight tad before their hard stops for optimal resolution across the field but the Loxia 25's corners looks pretty much optimal when focusing on center. The curvature is more towards the mid-zone so it seems more wavy compared to the Lox 21's.
That is interesting, Fred. Maybe it's sample variation. My Loxia 25 and 21 behave identically to each other, with best corner focus right at the hard stop, and gradually moving slightly closer as you go to midfield and then centre.
Aug 17, 2018 at 05:11 PM
p.4 #16Loxia 25 VS Batis 25mm Big Bronco
rvh23 wrote:
Their FC shape is a bit different. Both need a slight tad before their hard stops for optimal resolution across the field but the Loxia 25's corners looks pretty much optimal when focusing on center. The curvature is more towards the mid-zone so it seems more wavy compared to the Lox 21's.That is interesting, Fred. Maybe it's sample variation. My Loxia 25 and 21 behave identically, with best corner focus right at the hard stop, and gradually moving slightly closer as you go to midfield and then centre.
Of course this is at infinity though. Test it again. Focus on center and check the extreme corners at f/2.4. The extreme corners look sharp and better than the mid-zone. (It's not quite mid-zone though, it's the area between extreme edge and mid-zone). My copy is 100% centered.
I don't know if you remember but when the Loxia 25 came out, a few members tested it and thought it had lower FC compared to the Lox 21 but the mid-zone was a weaker wide open...Well, I think that's the reason.
Fred Miranda wrote
Something interesting I found between Loxia 21 and 25 lenses.Their FC shape is a bit different. Both need a slight tad before their hard stops for optimal resolution across the field but the Loxia 25's corners looks pretty much optimal when focusing on center. The curvature is more towards the mid-zone so it seems more wavy compared to the Lox 21's.
Of course this is at infinity though. Test it again. Focus on center and check the extreme corners at f/2.4. The extreme corners look sharp and better than the mid-zone. (It's not quite mid-zone though, it's the area between extreme edge and mid-zone). My copy is 100% centered.
I don't know if you remember but when the Loxia 25 came out, a few members tested it and thought it had lower FC compared to the Lox 21 but the mid-zone was a weaker wide open...Well, I think that's the reason.
Aug 17, 2018 at 05:17 PM
p.4 #17Loxia 25 VS Batis 25mm Big Bronco
Here are 100% crops @f2.4 from my Loxia 25 illustrating my previous comments. Focal target is the tree and cables in front of it.
First set of three focused at the center, second set focused at the infinity hard stop. In the first you can see that mid and corner regions are focused too close. In the second set, focused at the hard stop, centre is much softer than corner and mid regions. Corner behavior doesn't look to me to be more like the center than midfield.
p.s. my copy is perfectly centered also.
Focused for center
Focused for corner
First set of three focused at the center, second set focused at the infinity hard stop. In the first you can see that mid and corner regions are focused too close. In the second set, focused at the hard stop, centre is much softer than corner and mid regions. Corner behavior doesn't look to me to be more like the center than midfield.
p.s. my copy is perfectly centered also.
Focused for center
Focused for corner
Aug 17, 2018 at 06:04 PM
p.4 #18Loxia 25 VS Batis 25mm Big Bronco
The area I'm referring is not quite mid-field though. (check my thumbnail).
Here is what I see @f/2.4 (Wide open). Same behavior fo at all 4 corners:
"Center" = focused at center. (A slight tad before the hard stop)
"Hard stop" = focusing ring positioned at lens' hard stop (infinity)
@DavidBM, what say you?
First row: Center area | Second row: Mid-field area| Third row: Extreme edge area
Here is what I see @f/2.4 (Wide open). Same behavior fo at all 4 corners:
"Center" = focused at center. (A slight tad before the hard stop)
"Hard stop" = focusing ring positioned at lens' hard stop (infinity)
@DavidBM, what say you?
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First row: Center area | Second row: Mid-field area| Third row: Extreme edge area
Aug 17, 2018 at 06:33 PM
p.4 #19Loxia 25 VS Batis 25mm Big Bronco
I'm having some trouble visualizing this. Roger Ciala offered a good way to display field curvature (scroll down) using Photoshop's "find edges" filter on a grassy slope:
https://www.lensrentals.com/blog/2016/09/fun-with-field-of-focus-part-1/
Unfortunately, I have only the 25 and not both the 21 and the 25, and I can't find a convenient grassy slope in my drougt-stricken area that would allow me to attempt Ciala's analysis--but I hope someone will.
https://www.lensrentals.com/blog/2016/09/fun-with-field-of-focus-part-1/
Unfortunately, I have only the 25 and not both the 21 and the 25, and I can't find a convenient grassy slope in my drougt-stricken area that would allow me to attempt Ciala's analysis--but I hope someone will.
Aug 17, 2018 at 07:39 PM
p.4 #20Loxia 25 VS Batis 25mm Big Bronco
Incidentally.... one of the corners on my 25 is a touch off. Would you guys consider this to be acceptable? (I'm inclined to think so, but never quite know how picky I should be).
Aug 17, 2018 at 07:44 PM