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Archive 2018Zeiss Loxia 25mm f2.4 is a distagon
p.7 #1Zeiss Loxia 25mm f2.4 is a distagon
GM, they could have shown you an empty MTF chart and you would have been “in.” 
Let us know what you think when yours arrives!
GMPhotography wrote:
Looks good to me. The distortion is very low at .94 barrel . It’s what i figured and given that I’m guessing FC should be very low as well. I’m in
Let us know what you think when yours arrives!GMPhotography wrote:
Looks good to me. The distortion is very low at .94 barrel . It’s what i figured and given that I’m guessing FC should be very low as well. I’m in
Feb 14, 2018 at 08:36 AM
p.7 #2Zeiss Loxia 25mm f2.4 is a distagon
Yup. I have faith in Zeiss putting out a good Lens especially a new design . I want this focal length too and more important I like the look of Zeiss glass . So really not hard to twist my arm on it. Not to mention I have to try it , I’m a lens whore what else do you expect. Lol
Edited on Feb 14, 2018 at 09:13 AM · View previous versions
Edited on Feb 14, 2018 at 09:13 AM · View previous versions
Feb 14, 2018 at 08:41 AM
p.7 #3Zeiss Loxia 25mm f2.4 is a distagon
Very interesting comments on aperture ring. I purchased the Loxia 35 and returned it for that exact reason. I found it to be too fiddly when I was photographing people. I was also not thrilled by the rendering.
GMPhotography wrote:
I will probably get a loan and test it out. Mainly compare it to the Loxia 21/2.8.
Guy will definitely get it. He does not skip new releases.
I do like 24 better than I do 21 and if I try to keep the bag to four lenses and maybe the 135 in a separate bag because I don’t always need it for city street or landscape much. So since I have the Laowa 15 and CV 40 which neither lens is going anywhere than a 25 fits right in there plus I have a great sun star lens. So my plan is the 15,25,40,65 as my main kit. I bought back the 65 from a member as it’s just to hard to not have in the bag....Show more →
GMPhotography wrote:
Fred Miranda wrote
LBJ2 wrote
Hmmmm who will get this lens first Fred or Guy?Guy will definitely get it. He does not skip new releases.
Feb 14, 2018 at 08:50 AM
p.7 #4Zeiss Loxia 25mm f2.4 is a distagon
Yes I hate the aperture ring. I bought this for it. I believe I bought the mini.
http://www.lenstab.com
http://www.lenstab.com
Feb 14, 2018 at 09:00 AM
p.7 #5Zeiss Loxia 25mm f2.4 is a distagon
LBJ2 wrote:
I think the Loxia 25 may just become the most popular Loxia lens yet.
I sure hope folks are dumping their 21 for bargain prices, I'm more focused on that focal length rather than absolute MTF's
I think the Loxia 25 may just become the most popular Loxia lens yet.
I sure hope folks are dumping their 21 for bargain prices, I'm more focused on that focal length rather than absolute MTF's
Feb 14, 2018 at 09:07 AM
p.7 #6Zeiss Loxia 25mm f2.4 is a distagon
Phillip Reeve wrote:
Just sent the mail to Zeiss and you can be certain that Bastian will test that aspect
BastianK wrote:
We have not yet figured out who will review it, but I would definetly include that and I guess Phillip as well :-)
Y'all are the best. Really looking forward to the review!
Just sent the mail to Zeiss and you can be certain that Bastian will test that aspect
BastianK wrote:
We have not yet figured out who will review it, but I would definetly include that and I guess Phillip as well :-)
Y'all are the best. Really looking forward to the review!
Feb 14, 2018 at 09:08 AM
p.7 #7Zeiss Loxia 25mm f2.4 is a distagon
Why such a weird f-stop? Why not f2 or f2.8?
Feb 14, 2018 at 09:10 AM
p.7 #8Zeiss Loxia 25mm f2.4 is a distagon
The MTFs look almost identical... but I’m rooting for you to find a 21mm at bargain prices on the boards!
Charlie N wrote:
I sure hope folks are dumping their 21 for bargain prices, I'm more focused on that focal length rather than absolute MTF's
Charlie N wrote:
LBJ2 wrote
I think the Loxia 25 may just become the most popular Loxia lens yet.Feb 14, 2018 at 09:13 AM
p.7 #9Zeiss Loxia 25mm f2.4 is a distagon
It appears they’re more focused on keeping all Loxia lenses the same diameter... moreso than F stop. The size of the lens dictates F stop.
ajamils wrote:
Why such a weird f-stop? Why not f2 or f2.8?
ajamils wrote:
Why such a weird f-stop? Why not f2 or f2.8?
Feb 14, 2018 at 09:15 AM
p.7 #10Zeiss Loxia 25mm f2.4 is a distagon
ajamils wrote:
Why such a weird f-stop? Why not f2 or f2.8?
They are keeping the filter ring the same as the rest of the line at 52mm. So that must be what 2.4 can be in the lens design any faster than the lens would need to be bigger
Why such a weird f-stop? Why not f2 or f2.8?
They are keeping the filter ring the same as the rest of the line at 52mm. So that must be what 2.4 can be in the lens design any faster than the lens would need to be bigger
Feb 14, 2018 at 09:15 AM
p.7 #11Zeiss Loxia 25mm f2.4 is a distagon
GMPhotography wrote:
Yes I hate the aperture ring. I bought this for it. I believe I bought the mini.
http://www.lenstab.com
TAAB. That's interesting. Never ceases to amaze the many photography related products out there to solve just about any issue/concern.
Yes I hate the aperture ring. I bought this for it. I believe I bought the mini.
http://www.lenstab.com
TAAB. That's interesting. Never ceases to amaze the many photography related products out there to solve just about any issue/concern.
Feb 14, 2018 at 09:47 AM
p.7 #12Zeiss Loxia 25mm f2.4 is a distagon
ajamils wrote:
Why such a weird f-stop? Why not f2 or f2.8?
As said, probably to keep the filter size the same as others but I cant help but thinking they designed this as a fast lens and then cut out the sides.
The two 24mm lenses that look closest in design to this are the FD 24 1.4 L and Leica 24 1.4 (or at least they are all 10 elements in 8 groups).
I cant afford it and I love my old 24 FD L but I wouldn't be surprised if this is spectacular.
Why such a weird f-stop? Why not f2 or f2.8?
As said, probably to keep the filter size the same as others but I cant help but thinking they designed this as a fast lens and then cut out the sides.
The two 24mm lenses that look closest in design to this are the FD 24 1.4 L and Leica 24 1.4 (or at least they are all 10 elements in 8 groups).
I cant afford it and I love my old 24 FD L but I wouldn't be surprised if this is spectacular.
Feb 14, 2018 at 01:02 PM
p.7 #13Zeiss Loxia 25mm f2.4 is a distagon
MrTMan wrote:
You guys looking at the right charts? (Batis vs. Loxia). The Batis charts are shown at f/2 and f/4 in the spec sheets, while the Loxia charts are shown at f/2.4 and f/5.6.
ePhotozine has done MTF testing on both of them, and from their testing it seems like quite a close call — except for the Batis having less field curvature wide open.
I was using the Batis Zeiss full MTF at every aperture, which they don’t publish, but is available for paying subscribers at Lloyd Chambers pay site, and sometimes you can persuade Zeiss to let you see...
You guys looking at the right charts? (Batis vs. Loxia). The Batis charts are shown at f/2 and f/4 in the spec sheets, while the Loxia charts are shown at f/2.4 and f/5.6.
ePhotozine has done MTF testing on both of them, and from their testing it seems like quite a close call — except for the Batis having less field curvature wide open.
I was using the Batis Zeiss full MTF at every aperture, which they don’t publish, but is available for paying subscribers at Lloyd Chambers pay site, and sometimes you can persuade Zeiss to let you see...
Feb 14, 2018 at 03:37 PM
p.7 #14Zeiss Loxia 25mm f2.4 is a distagon
RobertHolloway wrote:
Very interesting comments on aperture ring. I purchased the Loxia 35 and returned it for that exact reason. I found it to be too fiddly when I was photographing people. I was also not thrilled by the rendering.
I will probably get a loan and test it out. Mainly compare it to the Loxia 21/2.8.
Guy will definitely get it. He does not skip new releases. I do like 24 better than I do 21 and if I try to keep the bag to four lenses and maybe the 135 in a separate bag because I don’t always need it for city street or landscape much. So since I have the Laowa 15 and CV 40 which neither lens is going anywhere than a 25 fits right in there plus I have a great sun star lens. So my plan is the 15,25,40,65 as my main kit. I bought back the 65 from a member as it’s just to hard to not have in the bag. At the moment to hold me over I just got a used CV 28 and stuck a Chinese variable adapter on it so I can focus closer. Seems to be working just fine too. So really all I’m waiting for is the 25. I’m on it as soon as I can buy it. I think it will be as good or better than the 21 and should have less field curvature. I even saved my TAB ring to put on it which is like a rubber band with a tab on it for the aperture ring. I do hate how Zeiss made the aperture to close to the mount and kept it the same diameter too. Bad idea if you ask me. Should stick out further than the focusing ring to start.
The wide aperture rendering on the Loxia 35 is indeed a bit, ah, odd. (Lovely stopped down). But it is a *completely* different design concept from the Loxia Distagons, and a much older one. (It’s a slight tweak on a quasi symmetrical Biogon design)
Very interesting comments on aperture ring. I purchased the Loxia 35 and returned it for that exact reason. I found it to be too fiddly when I was photographing people. I was also not thrilled by the rendering.
GMPhotography wrote
Fred Miranda wrote
LBJ2 wrote
Hmmmm who will get this lens first Fred or Guy?Guy will definitely get it. He does not skip new releases.
The wide aperture rendering on the Loxia 35 is indeed a bit, ah, odd. (Lovely stopped down). But it is a *completely* different design concept from the Loxia Distagons, and a much older one. (It’s a slight tweak on a quasi symmetrical Biogon design)
Feb 14, 2018 at 03:40 PM
p.7 #15Zeiss Loxia 25mm f2.4 is a distagon
MrTMan wrote:
You guys looking at the right charts? (Batis vs. Loxia). The Batis charts are shown at f/2 and f/4 in the spec sheets, while the Loxia charts are shown at f/2.4 and f/5.6.
ePhotozine has done MTF testing on both of them, and from their testing it seems like quite a close call — except for the Batis having less field curvature wide open.
FWIW a bit more info on the Batis 25 MTF: ( Available for free) Batis 25 "Peak performance is at f/5.6,"
https://diglloyd.com/blog/2015/20150429_0952-ZeissBatis-25f2-MTF.html
Maybe f/5.6 is a fair comparison between the two for now.
https://www.fredmiranda.com/forum/topic/1529721/5#14363865
You guys looking at the right charts? (Batis vs. Loxia). The Batis charts are shown at f/2 and f/4 in the spec sheets, while the Loxia charts are shown at f/2.4 and f/5.6.
ePhotozine has done MTF testing on both of them, and from their testing it seems like quite a close call — except for the Batis having less field curvature wide open.
FWIW a bit more info on the Batis 25 MTF: ( Available for free) Batis 25 "Peak performance is at f/5.6,"
https://diglloyd.com/blog/2015/20150429_0952-ZeissBatis-25f2-MTF.html
Maybe f/5.6 is a fair comparison between the two for now.
https://www.fredmiranda.com/forum/topic/1529721/5#14363865
Feb 14, 2018 at 04:04 PM
p.7 #16Zeiss Loxia 25mm f2.4 is a distagon
The Batis 25mm is significantly below the Loxia 25mm at f5.6 and presumably f8. The B25 always looked like a lens made predominantly for f2-f2.8 use, after lovely flat lines wide open we see the wild ride of the MTF curves at mid apertures - full cross frame astigmatism! You can get a decent sense by averaging the two lower lines, but these never compare with the very consistent Loxia 25mm data. Another very good clue is axis IQ. At f5.6 Batis is 70%, Loxia 25mm is 82%, for a very broad 'magic donut'. And at f2.4 for each it's much stronger - you can interpolate the Batis f2 and f2.8 data to see this.
Also interesting that CZ backed away from APD glass in this one (4 down to 2 elements from L21), might lead to more 'normal' color response. Regular glass rose from 55% to 70% of total, a small back to the future move.
As an afterthought, it's stronger than the Loxia 85mm in the big center bordered by the short edge, then only trails that one by a little, wider out. wow. A lot of people are going to like this one, because you get the glorious center with a very good near curvature-free outer. Betcha don't even need s/w 'correction'.
Also interesting that CZ backed away from APD glass in this one (4 down to 2 elements from L21), might lead to more 'normal' color response. Regular glass rose from 55% to 70% of total, a small back to the future move.
As an afterthought, it's stronger than the Loxia 85mm in the big center bordered by the short edge, then only trails that one by a little, wider out. wow. A lot of people are going to like this one, because you get the glorious center with a very good near curvature-free outer. Betcha don't even need s/w 'correction'.
Feb 14, 2018 at 05:43 PM
p.7 #17Zeiss Loxia 25mm f2.4 is a distagon
philip_pj wrote:
The Batis 25mm is significantly below the Loxia 25mm at f5.6 and presumably f8. The B25 always looked like a lens made predominantly for f2-f2.8 use, after lovely flat lines wide open we see the wild ride of the MTF curves at mid apertures - full cross frame astigmatism! You can get a decent sense by averaging the two lower lines, but these never compare with the very consistent Loxia 25mm data. Another very good clue is axis IQ. At f5.6 Batis is 70%, Loxia 25mm is 82%, for a very broad 'magic donut'. And at f2.4 for each it's...Show more →
I think the only reason for the reduction in APD glass here compared to 21mm is that 25 is easier to make, and doesn't need any more APD glass to get their colour correction to within the spec they have set for the series. I imagine the colour "look" will be pretty much the same.
The Batis 25mm is significantly below the Loxia 25mm at f5.6 and presumably f8. The B25 always looked like a lens made predominantly for f2-f2.8 use, after lovely flat lines wide open we see the wild ride of the MTF curves at mid apertures - full cross frame astigmatism! You can get a decent sense by averaging the two lower lines, but these never compare with the very consistent Loxia 25mm data. Another very good clue is axis IQ. At f5.6 Batis is 70%, Loxia 25mm is 82%, for a very broad 'magic donut'. And at f2.4 for each it's...Show more →
I think the only reason for the reduction in APD glass here compared to 21mm is that 25 is easier to make, and doesn't need any more APD glass to get their colour correction to within the spec they have set for the series. I imagine the colour "look" will be pretty much the same.
Feb 14, 2018 at 06:12 PM
p.7 #18Zeiss Loxia 25mm f2.4 is a distagon
DavidBM wrote:
I was using the Batis Zeiss full MTF at every aperture, which they don’t publish, but is available for paying subscribers at Lloyd Chambers pay site, and sometimes you can persuade Zeiss to let you see...
Interesting, I hadn't realized that data was available. It'll be really interesting to see some comparative test shots.
I was using the Batis Zeiss full MTF at every aperture, which they don’t publish, but is available for paying subscribers at Lloyd Chambers pay site, and sometimes you can persuade Zeiss to let you see...
Interesting, I hadn't realized that data was available. It'll be really interesting to see some comparative test shots.
Feb 14, 2018 at 06:54 PM
p.7 #19Zeiss Loxia 25mm f2.4 is a distagon
DavidBM wrote:
Also interesting that CZ backed away from APD glass in this one (4 down to 2 elements from L21), might lead to more 'normal' color response. Regular glass rose from 55% to 70% of total, a small back to the future move.
As an afterthought, it's stronger than the Loxia 85mm in the big center bordered by the short edge, then only trails that one by a little, wider out. wow. A lot of people are going to like this one, because you get the glorious center with a very good near curvature-free outer. Betcha don't even need s/w 'correction'.I think the only reason for the reduction in APD glass here compared to 21mm is that 25 is easier to make, and doesn't need any more APD glass to get their colour correction to within the spec they have set for the series. I imagine the colour "look" will be pretty much the same.
Makes total sense to me David!
philip_pj wrote
The Batis 25mm is significantly below the Loxia 25mm at f5.6 and presumably f8. The B25 always looked like a lens made predominantly for f2-f2.8 use, after lovely flat lines wide open we see the wild ride of the MTF curves at mid apertures - full cross frame astigmatism! You can get a decent sense by averaging the two lower lines, but these never compare with the very consistent Loxia 25mm data. Another very good clue is axis IQ. At f5.6 Batis is 70%, Loxia 25mm is 82%, for a very broad 'magic donut'. And at f2.4 for each it's much stronger - you can interpolate the Batis f2 and f2.8 data to see this.Also interesting that CZ backed away from APD glass in this one (4 down to 2 elements from L21), might lead to more 'normal' color response. Regular glass rose from 55% to 70% of total, a small back to the future move.
As an afterthought, it's stronger than the Loxia 85mm in the big center bordered by the short edge, then only trails that one by a little, wider out. wow. A lot of people are going to like this one, because you get the glorious center with a very good near curvature-free outer. Betcha don't even need s/w 'correction'.
Makes total sense to me David!
Feb 17, 2018 at 02:13 PM
p.7 #20Zeiss Loxia 25mm f2.4 is a distagon
The PhoBlographer has a review out on the Loxia 25.
5 stars, editors choice.
Looks like Zeiss did well on this Loxia.
5 stars, editors choice.
Looks like Zeiss did well on this Loxia.
Feb 18, 2018 at 10:46 AM