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Archive 2016Techart PRO AF adapter now In Stock!
p.3 #1Techart PRO AF adapter now In Stock!
Mine is coming later this week but I wont be able to get until Monday
Aug 15, 2016 at 07:47 PM
p.3 #2Techart PRO AF adapter now In Stock!
GMPhotography wrote:
Looks like we have to keep a eye on this. Maybe put in fresh charged battery overnight and check it in morning.
The TechArt Adapter WILL EAT your camera's battery life when not in use. It's best to remove the adapter after each use.
It will drain that battery as if the camera is still on and the motor is still moving.
However, while it is on, I've noticed no difference in bsttery drainage over a native FE lens.
It's just that the motor continues to drain battery even without the camera being on.
If anyone else have this adapter, please comment. Thanks.
There are a few threads on this already so maybe some consolidation is in order:
https://www.fredmiranda.com/forum/topic/1437116/0?keyword=techart#13614826
https://www.fredmiranda.com/forum/topic/1424869/0?keyword=techart#13514536
https://www.fredmiranda.com/forum/topic/1441368/0?keyword=techart#13648109
Looks like we have to keep a eye on this. Maybe put in fresh charged battery overnight and check it in morning.
mark1958 wrote
Wow.. could be a big issue. Not sure why this would happen though.dumplinknet wrote
mark1958 wrote
I wonder how this is going to affect battery lifeIt will drain that battery as if the camera is still on and the motor is still moving.
However, while it is on, I've noticed no difference in bsttery drainage over a native FE lens.
It's just that the motor continues to drain battery even without the camera being on.
If anyone else have this adapter, please comment. Thanks.
There are a few threads on this already so maybe some consolidation is in order:
https://www.fredmiranda.com/forum/topic/1437116/0?keyword=techart#13614826
https://www.fredmiranda.com/forum/topic/1424869/0?keyword=techart#13514536
https://www.fredmiranda.com/forum/topic/1441368/0?keyword=techart#13648109
Aug 15, 2016 at 07:48 PM
p.3 #3Techart PRO AF adapter now In Stock!
I'm a little worried old threads may confuse us since some of that was growing pains for it
Aug 15, 2016 at 08:00 PM
p.3 #4Techart PRO AF adapter now In Stock!
mark1958 wrote:
Thinking through this=== The Z motion the adapter uses to focus has to be a bit different than the movement of the elements when manually focusing....Will this result in more distortion?
If the lens is designed with an FLE, then using the adapter for full-time focus would cause some performance degradation over using the lens' helicoid, yes. You could minimize that to a degree by getting the lens most of the way there manually and then using AF for fine focus control. Otherwise, the difference will be as impactful to lens performance as an extension tube.
There are quite a few lenses (m-mount and otherwise) that don't use an FLE, so the entire optical assembly moves as one unit. Those shouldn't be impacted, assuming the adapter is not flawed.
Thinking through this=== The Z motion the adapter uses to focus has to be a bit different than the movement of the elements when manually focusing....Will this result in more distortion?
If the lens is designed with an FLE, then using the adapter for full-time focus would cause some performance degradation over using the lens' helicoid, yes. You could minimize that to a degree by getting the lens most of the way there manually and then using AF for fine focus control. Otherwise, the difference will be as impactful to lens performance as an extension tube.
There are quite a few lenses (m-mount and otherwise) that don't use an FLE, so the entire optical assembly moves as one unit. Those shouldn't be impacted, assuming the adapter is not flawed.
Aug 15, 2016 at 08:21 PM
p.3 #5Techart PRO AF adapter now In Stock!
GMPhotography wrote:
Now this is all set for Leica M lenses so no adapters . Trying to learn more about these. IHave not been following. I have a Zeiss 35 1.4 ZM coming tommorrow. Yea I finally broke down and bought one. Little arm twisting from our fearless leader.
I have a casual wedding to shoot next week . Should be a fun lens
Even with the problems at wider apertures on the Sony sensors, the lens is an absolute resolution monster in the central two-thirds, and the edges and corners get reasonable by f/5.6 for landscapes. I think you will have fun with it at the wedding and beyond.
Now this is all set for Leica M lenses so no adapters . Trying to learn more about these. IHave not been following. I have a Zeiss 35 1.4 ZM coming tommorrow. Yea I finally broke down and bought one. Little arm twisting from our fearless leader.
I have a casual wedding to shoot next week . Should be a fun lens
Even with the problems at wider apertures on the Sony sensors, the lens is an absolute resolution monster in the central two-thirds, and the edges and corners get reasonable by f/5.6 for landscapes. I think you will have fun with it at the wedding and beyond.
Aug 15, 2016 at 08:29 PM
p.3 #6Techart PRO AF adapter now In Stock!
Makes total sense. Thanks!
freaklikeme wrote:
If the lens is designed with an FLE, then using the adapter for full-time focus would cause some performance degradation over using the lens' helicoid, yes. You could minimize that to a degree by getting the lens most of the way there manually and then using AF for fine focus control. Otherwise, the difference will be as impactful to lens performance as an extension tube.
There are quite a few lenses (m-mount and otherwise) that don't use an FLE, so the entire optical assembly moves as one unit. Those shouldn't be impacted, assuming the adapter is not flawed.
freaklikeme wrote:
mark1958 wrote
Thinking through this=== The Z motion the adapter uses to focus has to be a bit different than the movement of the elements when manually focusing....Will this result in more distortion?There are quite a few lenses (m-mount and otherwise) that don't use an FLE, so the entire optical assembly moves as one unit. Those shouldn't be impacted, assuming the adapter is not flawed.
Aug 15, 2016 at 08:43 PM
p.3 #7Techart PRO AF adapter now In Stock!
freaklikeme wrote:
I have a casual wedding to shoot next week . Should be a fun lensEven with the problems at wider apertures on the Sony sensors, the lens is an absolute resolution monster in the central two-thirds, and the edges and corners get reasonable by f/5.6 for landscapes. I think you will have fun with it at the wedding and beyond.
Made my day. Lol
I hope this is it. I think I could write a book just on 35mm lenses. Lol
GMPhotography wrote
Now this is all set for Leica M lenses so no adapters . Trying to learn more about these. IHave not been following. I have a Zeiss 35 1.4 ZM coming tommorrow. Yea I finally broke down and bought one. Little arm twisting from our fearless leader. I have a casual wedding to shoot next week . Should be a fun lens
Made my day. Lol
I hope this is it. I think I could write a book just on 35mm lenses. Lol
Aug 15, 2016 at 08:45 PM
p.3 #8Techart PRO AF adapter now In Stock!
The battery issue is a known issue that was brushed under the rug. No one seems to be talking about it. In fact, there been at lease 3,000 units shipped and there has been only a handful of reviews. Anyone noticed that?
Aug 15, 2016 at 09:37 PM
p.3 #9Techart PRO AF adapter now In Stock!
dumplinknet wrote:
The battery issue is a known issue that was brushed under the rug. No one seems to be talking about it. In fact, there been at lease 3,000 units shipped and there has been only a handful of reviews. Anyone noticed that?
I will definitely test this as soon as I get the adapter. I don't doubt this could be a real problem but aside from your posts, I haven't seen any other reports on it.
Is it possible that this issue has already been fixed with a firmware upgrade?
Since you say it's a known issue, could you please share a link pointing to this discussion? Thank you!
The battery issue is a known issue that was brushed under the rug. No one seems to be talking about it. In fact, there been at lease 3,000 units shipped and there has been only a handful of reviews. Anyone noticed that?
I will definitely test this as soon as I get the adapter. I don't doubt this could be a real problem but aside from your posts, I haven't seen any other reports on it.
Is it possible that this issue has already been fixed with a firmware upgrade?
Since you say it's a known issue, could you please share a link pointing to this discussion? Thank you!
Aug 15, 2016 at 11:02 PM
p.3 #10Techart PRO AF adapter now In Stock!
freaklikeme wrote:
If the lens is designed with an FLE, then using the adapter for full-time focus would cause some performance degradation over using the lens' helicoid, yes. You could minimize that to a degree by getting the lens most of the way there manually and then using AF for fine focus control. Otherwise, the difference will be as impactful to lens performance as an extension tube.
There are quite a few lenses (m-mount and otherwise) that don't use an FLE, so the entire optical assembly moves as one unit. Those shouldn't be impacted, assuming the adapter is not flawed.
I tested mine extensively with a modified A7rII and a few known high-performance FLEs (50 APO cron, 35 lux FLE, 75 cron). None of the lens gives any resolution trouble at what I would call portrait distance. The 75 cron does soften by a tiny bit at 0.7m, but that clears up once I shift the lens from infinity. Things really deteriorate wide open at macro distances, though. You can still get close to 1:1 with a wider lens and the adapter, which is pretty cool.
No Leica lenses except the WATE and MATE are internal focus which IMO is more problematic.
mark1958 wrote
Thinking through this=== The Z motion the adapter uses to focus has to be a bit different than the movement of the elements when manually focusing....Will this result in more distortion?There are quite a few lenses (m-mount and otherwise) that don't use an FLE, so the entire optical assembly moves as one unit. Those shouldn't be impacted, assuming the adapter is not flawed.
I tested mine extensively with a modified A7rII and a few known high-performance FLEs (50 APO cron, 35 lux FLE, 75 cron). None of the lens gives any resolution trouble at what I would call portrait distance. The 75 cron does soften by a tiny bit at 0.7m, but that clears up once I shift the lens from infinity. Things really deteriorate wide open at macro distances, though. You can still get close to 1:1 with a wider lens and the adapter, which is pretty cool.
No Leica lenses except the WATE and MATE are internal focus which IMO is more problematic.
Aug 16, 2016 at 12:22 AM
p.3 #11Techart PRO AF adapter now In Stock!
Nope, haven't noticed any battery drain. The battery gauge does display weird values at times but after a few clicks the percentages goes back to normal.
Aug 16, 2016 at 12:27 AM
p.3 #12Techart PRO AF adapter now In Stock!
ZhanMing12 wrote:
If the lens is designed with an FLE, then using the adapter for full-time focus would cause some performance degradation over using the lens' helicoid, yes. You could minimize that to a degree by getting the lens most of the way there manually and then using AF for fine focus control. Otherwise, the difference will be as impactful to lens performance as an extension tube.
There are quite a few lenses (m-mount and otherwise) that don't use an FLE, so the entire optical assembly moves as one unit. Those shouldn't be impacted, assuming the adapter is not flawed.I tested mine extensively with a modified A7rII and a few known high-performance FLEs (50 APO cron, 35 lux FLE, 75 cron). None of the lens gives any resolution trouble at what I would call portrait distance. The 75 cron does soften by a tiny bit at 0.7m, but that clears up once I shift the lens from infinity. Things really deteriorate wide open at macro distances, though. You can still get close to 1:1 with a wider lens and the adapter, which is pretty cool.
No Leica lenses except the WATE and MATE are internal focus which IMO is...Show more →
I'm not saying it will be particularly impactful for every shooting situation, or that every lens with an FLE will be impacted the same amount. FLEs are implemented differently. Some are like the Canon FD 85L or your Summicron 75, where the rear group remains static while the other groups move, or the Samyang TS 24/3.5, where the rear collection of groups move until about 3M when the front group also starts moving. Some are like the Touit 50 that moves multiple groups at different times in different directions. How tolerant all of those lenses are to extension tubes should vary.
I don't follow the logic on IF being a problem. Any lens could be internally focused if it had enough room in the body. Is there something consistent with IF lenses you think is the culprit? Like maybe having a front element or group FLE that remains static while the rear groups move?
freaklikeme wrote
mark1958 wrote
Thinking through this=== The Z motion the adapter uses to focus has to be a bit different than the movement of the elements when manually focusing....Will this result in more distortion?There are quite a few lenses (m-mount and otherwise) that don't use an FLE, so the entire optical assembly moves as one unit. Those shouldn't be impacted, assuming the adapter is not flawed.
No Leica lenses except the WATE and MATE are internal focus which IMO is...Show more →
I'm not saying it will be particularly impactful for every shooting situation, or that every lens with an FLE will be impacted the same amount. FLEs are implemented differently. Some are like the Canon FD 85L or your Summicron 75, where the rear group remains static while the other groups move, or the Samyang TS 24/3.5, where the rear collection of groups move until about 3M when the front group also starts moving. Some are like the Touit 50 that moves multiple groups at different times in different directions. How tolerant all of those lenses are to extension tubes should vary.
I don't follow the logic on IF being a problem. Any lens could be internally focused if it had enough room in the body. Is there something consistent with IF lenses you think is the culprit? Like maybe having a front element or group FLE that remains static while the rear groups move?
Aug 16, 2016 at 01:12 AM
p.3 #13Techart PRO AF adapter now In Stock!
dumplinknet wrote:
The battery issue is a known issue that was brushed under the rug. No one seems to be talking about it. In fact, there been at lease 3,000 units shipped and there has been only a handful of reviews. Anyone noticed that?
Hmmm.. I have not noticed this issue in the past although I have not used it all that often so far.
However, today, I left it on my A7r ii now for about 7.5 hours. So far, battery stayed at 98%, the same as it was this morning. This is with fw 3.0 .
The battery issue is a known issue that was brushed under the rug. No one seems to be talking about it. In fact, there been at lease 3,000 units shipped and there has been only a handful of reviews. Anyone noticed that?
Hmmm.. I have not noticed this issue in the past although I have not used it all that often so far.
However, today, I left it on my A7r ii now for about 7.5 hours. So far, battery stayed at 98%, the same as it was this morning. This is with fw 3.0 .
Aug 16, 2016 at 03:24 AM
p.3 #15Techart PRO AF adapter now In Stock!
Can this af large lenses that are tripod mounted by allowing the body to move?
Aug 16, 2016 at 09:18 AM
p.3 #16Techart PRO AF adapter now In Stock!
I'm worried about the fit with adapter if you have a L bracket does it impede at all
Aug 16, 2016 at 09:20 AM
p.3 #17Techart PRO AF adapter now In Stock!
GMPhotography wrote:
I'm worried about the fit with adapter if you have a L bracket does it impede at all
The adaptor works fine with the L bracket, doesn't impede. I used mine with the A7rII and the RRS L bracket and it was fine.
For others, you can buy new or you can buy mine which is like new for $300, its listed in the Buy & Sell
I'm worried about the fit with adapter if you have a L bracket does it impede at all
The adaptor works fine with the L bracket, doesn't impede. I used mine with the A7rII and the RRS L bracket and it was fine.
For others, you can buy new or you can buy mine which is like new for $300, its listed in the Buy & Sell
Aug 16, 2016 at 09:46 AM
p.3 #18Techart PRO AF adapter now In Stock!
I'm in contact with TechArt and they confirmed there is a battery drain issue. It's almost imperceptible but it's there. Perhaps 1% loss every 6-8 hours. They are working on fixing this bug on a future upgrade.
They wrote: "Since we are not working with Sony but doing reverse engineering, clearing bugs is not as easy as it may look."
They wrote: "Since we are not working with Sony but doing reverse engineering, clearing bugs is not as easy as it may look."
Aug 16, 2016 at 10:08 AM
p.3 #19Techart PRO AF adapter now In Stock!
Thanks . I did mention yours is for sale in the board. Someone needs to grab it. I'm just not sure it's for me because I do like to manual focus so I'll try it new and return if needed. I'm a weirdo so don't go my preference here. It's that old School mentality
thedigitalbean wrote:
The adaptor works fine with the L bracket, doesn't impede. I used mine with the A7rII and the RRS L bracket and it was fine.
For others, you can buy new or you can buy mine which is like new for $300, its listed in the Buy & Sell
thedigitalbean wrote:
GMPhotography wrote
I'm worried about the fit with adapter if you have a L bracket does it impede at allFor others, you can buy new or you can buy mine which is like new for $300, its listed in the Buy & Sell
Aug 16, 2016 at 10:31 AM
p.3 #20Techart PRO AF adapter now In Stock!
Really does not sound like a big deal. Just switch lens before you put it to rest for a period. Workaround number 1. Lol
Fred Miranda wrote:
I'm in contact with TechArt and they confirmed there is a battery drain issue. It's almost imperceptible but it's there. Perhaps 1% loss every 6-8 hours. They are working on fixing this bug on a future upgrade.
They wrote: "Since we are not working with Sony but doing reverse engineering, clearing bugs is not as easy as it may look."
Fred Miranda wrote:
I'm in contact with TechArt and they confirmed there is a battery drain issue. It's almost imperceptible but it's there. Perhaps 1% loss every 6-8 hours. They are working on fixing this bug on a future upgrade.
They wrote: "Since we are not working with Sony but doing reverse engineering, clearing bugs is not as easy as it may look."
Aug 16, 2016 at 10:32 AM