Techart Pro LM-EA9 Review
p.6 #1Techart Pro LM-EA9 Review
BastianK wrote:
Not to the slightest, no. Either it works in the corners or it doesn't.
At least for the ~15 lenses I tried so far.
That’s also my experience on the half dozen I’ve tried.
If tthere is a pattern at all so far (and so far I’m working my way through my old collection of Nakagawa designed OM Zuiko SLR lenses) it’s that it works better on the faster lenses than the more compact slower ones, even of the same focal length.
bemei wrote
Does stopping down the 'problem' lenses cure the problem?At least for the ~15 lenses I tried so far.
That’s also my experience on the half dozen I’ve tried.
If tthere is a pattern at all so far (and so far I’m working my way through my old collection of Nakagawa designed OM Zuiko SLR lenses) it’s that it works better on the faster lenses than the more compact slower ones, even of the same focal length.
Aug 31, 2022 at 03:12 PM
p.6 #2Techart Pro LM-EA9 Review
lattesweden wrote:
Did you upgrade to the latest version? They keep tweaking it.Yep!
Gotta say I’m pretty happy with it. It works just fine in the central box of a ROT grid on every lens I’ve tried, and variability in the outer field is to be expected. I’m more surprised how good it is in the outer field on some lenses, than disappointed that it doesn’t work so well there on others!My guess is that the lens with lower performance has a mid-field dip wide open?By my experience it has nothing to do with that.
I tried it with very high resolving lenses and it doesn't work at all outside the central area whereas it "magically" works with actually pretty bad lenses (resolution/contrast wise) right into the corners.
My guess is still that the AF algorithm needs information on the lateral CA of the lens to make proper use of the phase detect pixels.
I don't have enough (or any) knowledge about the AF algorithms and if lateral CA correction is already applied before the focus operation though, which would be a clear indicator of my theory.I've asked Techart about this. Let's see what they say.I'm still waiting for my adapter (ordered on the 10th). A question: Those lenses that work or don't work in the corners, is there any difference between focusing them on "dead" objects or on people with the Face Detect/Eye-AF? If I remember correctly, the Face Detect/Eye-AF uses the CDAF more, than the PDAF, that is why I ask. Thanks!
I always had the impression that Eye AF was mostly PDAF but could be wrong. It did work in CDAF for the original A7R but it was not good.
Fred Miranda wrote
BastianK wrote
Fred Miranda wrote
DavidBM wrote
Fred Miranda wrote
Hi David,Did you upgrade to the latest version? They keep tweaking it.
Gotta say I’m pretty happy with it. It works just fine in the central box of a ROT grid on every lens I’ve tried, and variability in the outer field is to be expected. I’m more surprised how good it is in the outer field on some lenses, than disappointed that it doesn’t work so well there on others!
I tried it with very high resolving lenses and it doesn't work at all outside the central area whereas it "magically" works with actually pretty bad lenses (resolution/contrast wise) right into the corners.
My guess is still that the AF algorithm needs information on the lateral CA of the lens to make proper use of the phase detect pixels.
I don't have enough (or any) knowledge about the AF algorithms and if lateral CA correction is already applied before the focus operation though, which would be a clear indicator of my theory.
I always had the impression that Eye AF was mostly PDAF but could be wrong. It did work in CDAF for the original A7R but it was not good.
Aug 31, 2022 at 03:23 PM
p.6 #3Techart Pro LM-EA9 Review
DavidBM wrote:
Not to the slightest, no. Either it works in the corners or it doesn't.
At least for the ~15 lenses I tried so far.That’s also my experience on the half dozen I’ve tried.
If tthere is a pattern at all so far (and so far I’m working my way through my old collection of Nakagawa designed OM Zuiko SLR lenses) it’s that it works better on the faster lenses than the more compact slower ones, even of the same focal length.
To avoid misses, I mostly focus at center and recompose with the LM-EA9, except with Eye-AF where surprisingly I get great results with my M lenses.
BastianK wrote
bemei wrote
Does stopping down the 'problem' lenses cure the problem?At least for the ~15 lenses I tried so far.
If tthere is a pattern at all so far (and so far I’m working my way through my old collection of Nakagawa designed OM Zuiko SLR lenses) it’s that it works better on the faster lenses than the more compact slower ones, even of the same focal length.
To avoid misses, I mostly focus at center and recompose with the LM-EA9, except with Eye-AF where surprisingly I get great results with my M lenses.
Aug 31, 2022 at 03:27 PM
p.6 #4Techart Pro LM-EA9 Review
I did some tests (as well as was practical) and this adapter with a 35/1.4 lux on the Sony a1 consistently focused faster than I could with the m11. So impressed how well they've engineered this widget.
Sep 01, 2022 at 07:53 PM
p.6 #5Techart Pro LM-EA9 Review
SteveF wrote:
I did some tests (as well as was practical) and this adapter with a 35/1.4 lux on the Sony a1 consistently focused faster than I could with the m11. So impressed how well they've engineered this widget.
ASPH Lux?
I did some tests (as well as was practical) and this adapter with a 35/1.4 lux on the Sony a1 consistently focused faster than I could with the m11. So impressed how well they've engineered this widget.
ASPH Lux?
Sep 01, 2022 at 08:35 PM
p.6 #6Techart Pro LM-EA9 Review
Yep - the Leica 35mm f/1.4 Summilux-M ASPH. (FLE) M-Mount Lens, Germany, Black, 6-Bit {E46} 11663
Sep 02, 2022 at 05:52 AM
p.6 #8Techart Pro LM-EA9 Review
SteveF wrote:
Yep - the Leica 35mm f/1.4 Summilux-M ASPH. (FLE) M-Mount Lens, Germany, Black, 6-Bit {E46} 11663
It also works quite well with the 50/1.4 lux.
Yep - the Leica 35mm f/1.4 Summilux-M ASPH. (FLE) M-Mount Lens, Germany, Black, 6-Bit {E46} 11663
It also works quite well with the 50/1.4 lux.
Sep 02, 2022 at 09:45 PM
p.6 #9Techart Pro LM-EA9 Review
I've always been wondering about something and hope someone can explain it to me:
It's the camera that's doing the AF part and then sending data to the lens/adapter to shift the focus. So how can it be some lenses, or in this case adapter, perform better or worse? Why does one lens/adapter work better with eye AF than another? It's the camera that "sees" the image and decides if it's in or out of focus. So why will it only work with PDAF and not with CDAF? Why does one AF setting (like "Wide") work better than the other? In the end it's the same image that's being "seen" by the sensor...
It's the camera that's doing the AF part and then sending data to the lens/adapter to shift the focus. So how can it be some lenses, or in this case adapter, perform better or worse? Why does one lens/adapter work better with eye AF than another? It's the camera that "sees" the image and decides if it's in or out of focus. So why will it only work with PDAF and not with CDAF? Why does one AF setting (like "Wide") work better than the other? In the end it's the same image that's being "seen" by the sensor...
Sep 03, 2022 at 04:03 AM
p.6 #10Techart Pro LM-EA9 Review
teraflame wrote:
whats the best focus mode to use?
I’m not sure. Wide works well, but I never know what part of the frame it is going to decide to focus on.
I mostly use something more center weighted and then re-compose. Human eye AF is solid as well.
whats the best focus mode to use?
I’m not sure. Wide works well, but I never know what part of the frame it is going to decide to focus on.
I mostly use something more center weighted and then re-compose. Human eye AF is solid as well.
Sep 03, 2022 at 05:37 AM
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p.6 #11Techart Pro LM-EA9 Review
^^^^Wow Steve, coming up on your 20 year membership here at FM...cool!
Hopefully B&H gets these in stock soon. I've been using my EA7 a lot lately. It actually still works really good after 2-3 years of use (although, I don't use it much). I'm always worried I'll get the wobble. Sounds like it's a very robust upgrade. I switched back to Sony for my AF needs and with these adapters I don't need to buy any Sony primes (well, maybe 1 or 2
). Saves me a ton of $.
Hopefully B&H gets these in stock soon. I've been using my EA7 a lot lately. It actually still works really good after 2-3 years of use (although, I don't use it much). I'm always worried I'll get the wobble. Sounds like it's a very robust upgrade. I switched back to Sony for my AF needs and with these adapters I don't need to buy any Sony primes (well, maybe 1 or 2
). Saves me a ton of $.Sep 03, 2022 at 08:45 AM
p.6 #12Techart Pro LM-EA9 Review
Fred Miranda wrote:
New firmware update (v1.5)
Recently got my adapter, it says firmware is 15 but I can't switch to MF focusing, it is greyed out?
New firmware update (v1.5)
- Camera lens name updated to TECHART LM-EA9
- When switched to MF, adapter moves back to infinity focus
Recently got my adapter, it says firmware is 15 but I can't switch to MF focusing, it is greyed out?
Sep 07, 2022 at 09:49 AM
p.6 #13Techart Pro LM-EA9 Review
You need to assign a button to AF/MF ctrl toggle for that.
Sep 07, 2022 at 10:40 AM
p.6 #14Techart Pro LM-EA9 Review
Thanks Bastian!
One thing I have noticed is that on my old A7RII, I can't move the focus box outside of the PDAF area which is only in the middler part of the image. So the TechArt seems not to use CDAF at all.
Another thing I noticed is that on my A7RII I can't get it do work with Eye-AF, it says that the lens is not compatible (meaning the adapter). It does work with Face Detect though.
On my more modern bodys Eye-AF works fine and I can also position the focus box anywhere in the image (how well it works outside of the middle is another lens dependent topic though).
One thing I have noticed is that on my old A7RII, I can't move the focus box outside of the PDAF area which is only in the middler part of the image. So the TechArt seems not to use CDAF at all.
Another thing I noticed is that on my A7RII I can't get it do work with Eye-AF, it says that the lens is not compatible (meaning the adapter). It does work with Face Detect though.
On my more modern bodys Eye-AF works fine and I can also position the focus box anywhere in the image (how well it works outside of the middle is another lens dependent topic though).
Sep 07, 2022 at 12:53 PM
p.6 #15Techart Pro LM-EA9 Review
BastianK wrote:
You need to assign a button to AF/MF ctrl toggle for that.
I just noticed that on an A9 (and most likely A9II + A1) one can also use the knob on the body and set it over to MF, but that takes more time, so a custom button is better.
You need to assign a button to AF/MF ctrl toggle for that.
I just noticed that on an A9 (and most likely A9II + A1) one can also use the knob on the body and set it over to MF, but that takes more time, so a custom button is better.
Sep 07, 2022 at 01:21 PM
p.6 #16Techart Pro LM-EA9 Review
Do we have a definitive US shipping date? B+H says October, I am itching for mine…
Sep 09, 2022 at 12:50 PM
p.6 #17Techart Pro LM-EA9 Review
I'm a little disappointed. It seems the date has been pushed out at BH Photo, until then I continue to use the EA7 but itching for the improvements.
It looks like the not warrantied sellers may have them in stock though.
nehemiahphoto wrote:
Do we have a definitive US shipping date? B+H says October, I am itching for mine…
It looks like the not warrantied sellers may have them in stock though.
nehemiahphoto wrote:
Do we have a definitive US shipping date? B+H says October, I am itching for mine…
Sep 09, 2022 at 01:19 PM
p.6 #18Techart Pro LM-EA9 Review
nehemiahphoto wrote:
Do we have a definitive US shipping date? B+H says October, I am itching for mine…
Have an order in with B&H and Techart.. neither has moved, sadly.
Waiting for this to come in to decide if I pick up an A7 IV or A7C for a family / sports camera that will double as a platform for fun (adapting my M and CY collection).. really would like to get into that testing..!
Do we have a definitive US shipping date? B+H says October, I am itching for mine…
Have an order in with B&H and Techart.. neither has moved, sadly.
Waiting for this to come in to decide if I pick up an A7 IV or A7C for a family / sports camera that will double as a platform for fun (adapting my M and CY collection).. really would like to get into that testing..!
Sep 09, 2022 at 04:50 PM
p.6 #19Techart Pro LM-EA9 Review
I ordered directly from Techart website on Aug 13 and received the adapter yesterday...less than a month waiting time.
Sep 09, 2022 at 10:01 PM
p.6 #20Techart Pro LM-EA9 Review
Is there any way to reprogram (via camera body or PC) the IBIS setting vs the aperture values? I only have MF lenses between 24 and 300 mm so don't need 15 or 800 mm for instance but 55 and 100 mm for instance are as it is now lacking in the factory installed range so I would rather have those than focal lengths I will never use.
Sep 11, 2022 at 05:48 AM