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calvin83
Joined: 12 Apr 2009 Posts: 7554 Location: Hong Kong
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Posted: Sun Jan 10, 2016 4:11 am Post subject: Techart Leica M to Sony E AF adapter in development (new) |
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calvin83 wrote:
The discussion in Chinese forum Xitek
http://forum.xitek.com/thread-1535183-1-1-2.html
Video: http://v.youku.com/v_show/id_XMTQzNzUwMDQ2NA==.html
Here is the list of the approximate focus range of the adapter without using the focus ring of the lens.
15mm 6.5cm-inf
21mm 12cm-inf
24mm 15cm-inf
28mm 20cm-inf
35mm 31cm-inf
50mm 60cm-inf
90mm 1.8m-inf
135mm 4.2m-inf
P.S. For discussions on how xxx lens works on xxx E-mount camera, please use the old thread http://forum.mflenses.com/techart-leica-m-to-sony-e-af-adapter-in-development-t73847.html or open another thread in the appropriate section on this forum. _________________ https://lensfever.com/
https://www.instagram.com/_lens_fever/
The best lens is the one you have with you.
Last edited by calvin83 on Sun Jan 10, 2016 9:54 am; edited 1 time in total |
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calvin83
Joined: 12 Apr 2009 Posts: 7554 Location: Hong Kong
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Posted: Sun Jan 10, 2016 4:44 am Post subject: |
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calvin83 wrote:
Some updates:
The open beta will starts very soon. (I think we will know more about how the adapters perform on different lenses within this month.)
The developer kpliang said he receive many suggestion on making a EOS mount version. So, it is possible we will see one later.
About the camera APP:
We can customize the operation of the adapter for each lens data saved in the adapter. If we don't need the AF function on certain lens, we can disable it on the APP.
There is opinion to choose where the adapter moves after taking a photo. It can be 1)stops after taking a photo, 2)moves to the infinity position and 3)move to the middle (between infinity(fully retracted) and the MFD position)
Here is the screen shot of the APP in development:
http://forum.xitek.com/forum-redirect-goto-findpost-ptid-1535183-pid-64595308.html _________________ https://lensfever.com/
https://www.instagram.com/_lens_fever/
The best lens is the one you have with you. |
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calvin83
Joined: 12 Apr 2009 Posts: 7554 Location: Hong Kong
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Posted: Sun Jan 10, 2016 4:47 am Post subject: |
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calvin83 wrote:
There is another news. It seems there is someone who are working on the cooperation of the developer of Mitakon liuwzen and kpliang . We may see there will be AF E mount lenses made by Mitakon in the future. _________________ https://lensfever.com/
https://www.instagram.com/_lens_fever/
The best lens is the one you have with you. |
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calvin83
Joined: 12 Apr 2009 Posts: 7554 Location: Hong Kong
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Posted: Mon Jan 11, 2016 12:43 pm Post subject: |
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calvin83 wrote:
I heard a news that a well-known adapter is working on E mount electrical adapters for Rolleiflex 6008, probably it will support AF on E mount camera too. _________________ https://lensfever.com/
https://www.instagram.com/_lens_fever/
The best lens is the one you have with you. |
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dan_
Joined: 05 Dec 2012 Posts: 1054 Location: Romania
Expire: 2016-12-19
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Posted: Mon Jan 18, 2016 5:56 pm Post subject: |
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dan_ wrote:
Extended tests here:
https://translate.google.com/translate?hl=en&sl=zh-CN&tl=en&u=http%3A%2F%2Fadvancegearbymx.com%2Fwordpress%2F%3Fp%3D842
and here:
http://www.sonyalpharumors.com/
It looks like the adapter will ship in late January for $349.
It's a bit expensive (compared with LA-EA 4), but not excessive. |
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calvin83
Joined: 12 Apr 2009 Posts: 7554 Location: Hong Kong
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Posted: Tue Jan 19, 2016 4:06 am Post subject: |
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calvin83 wrote:
In the original post, the developer said the adapter will shipped from March and he never mentioned about the price. It is only cost $349, it is not a bad price consider it is the first one on the market.
Here is the link of a video testing the AF speed on A7II.
http://v.youku.com/v_show/id_XMTQ0OTA5MTQzNg==.html _________________ https://lensfever.com/
https://www.instagram.com/_lens_fever/
The best lens is the one you have with you. |
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calvin83
Joined: 12 Apr 2009 Posts: 7554 Location: Hong Kong
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Posted: Sun Jan 24, 2016 7:39 am Post subject: |
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calvin83 wrote:
The testers has been received the adapter. The results are pretty promising for small lenses within 50mm(decently fast and very good accurately). _________________ https://lensfever.com/
https://www.instagram.com/_lens_fever/
The best lens is the one you have with you. |
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calvin83
Joined: 12 Apr 2009 Posts: 7554 Location: Hong Kong
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Posted: Sat Feb 06, 2016 4:23 pm Post subject: |
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calvin83 wrote:
At this stage, the wide angles(21mm or below) does not works well on the adapter(also happen on the Contax G adapter with G21). Any lens slower than F5.6 may not work too due to the limit of the phase detection system. _________________ https://lensfever.com/
https://www.instagram.com/_lens_fever/
The best lens is the one you have with you. |
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dan_
Joined: 05 Dec 2012 Posts: 1054 Location: Romania
Expire: 2016-12-19
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calvin83
Joined: 12 Apr 2009 Posts: 7554 Location: Hong Kong
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Posted: Wed Feb 10, 2016 5:49 pm Post subject: |
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calvin83 wrote:
Good to see the price is finalized. There will be Leica R and Contax/Yashica mount version later. The EOS mount version will follow after the LR/CY version.
To Mods, please help to move this thread to the adapter section. _________________ https://lensfever.com/
https://www.instagram.com/_lens_fever/
The best lens is the one you have with you. |
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calvin83
Joined: 12 Apr 2009 Posts: 7554 Location: Hong Kong
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Posted: Sat Mar 05, 2016 9:22 am Post subject: |
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calvin83 wrote:
There are tests on the focus speed with different lenses at youtube now.
https://www.youtube.com/user/mxcamerahk/videos _________________ https://lensfever.com/
https://www.instagram.com/_lens_fever/
The best lens is the one you have with you. |
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Nordentro
Joined: 24 Jun 2010 Posts: 4713 Location: Lillehammer, Norway
Expire: 2015-01-29
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Posted: Sat Mar 05, 2016 9:28 am Post subject: |
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Nordentro wrote:
I have bought one in advance
It shouldn`t be too long before they ship now _________________ Lars | Manuellfokus.no |
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Nordentro
Joined: 24 Jun 2010 Posts: 4713 Location: Lillehammer, Norway
Expire: 2015-01-29
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Posted: Sat Mar 05, 2016 9:30 am Post subject: |
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Nordentro wrote:
Someone mention that focus peaking is clearer with the Kolarimod (removal of AA filter on A7), could this also have an effect on Techart AF adapter? _________________ Lars | Manuellfokus.no |
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calvin83
Joined: 12 Apr 2009 Posts: 7554 Location: Hong Kong
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Posted: Sat Mar 05, 2016 9:46 am Post subject: |
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calvin83 wrote:
Nordentro wrote: |
Someone mention that focus peaking is clearer with the Kolarimod (removal of AA filter on A7), could this also have an effect on Techart AF adapter? |
I think it may have slight impact on the focus speed. Anyway, it will works fine with or without the mod. _________________ https://lensfever.com/
https://www.instagram.com/_lens_fever/
The best lens is the one you have with you. |
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listera
Joined: 24 Oct 2013 Posts: 126 Location: Ankara
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Posted: Sat Mar 05, 2016 11:21 am Post subject: |
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listera wrote:
calvin83 wrote: |
... Any lens slower than F5.6 may not work too due to the limit of the phase detection system. |
This is an interesting point, that can leading to the view that even a f 1.2 lens will not "AF" if it was set to f8 during operation. _________________ Zuikoware / Rokkorprone / FDthropist
https://www.flickr.com/photos/97103793@N06/ |
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calvin83
Joined: 12 Apr 2009 Posts: 7554 Location: Hong Kong
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Posted: Sat Mar 05, 2016 1:34 pm Post subject: |
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calvin83 wrote:
listera wrote: |
calvin83 wrote: |
... Any lens slower than F5.6 may not work too due to the limit of the phase detection system. |
This is an interesting point, that can leading to the view that even a f 1.2 lens will not "AF" if it was set to f8 during operation. |
Yes. If F8 or slower is needed, set the aperture to F2.8 or F4 and focus before further stopping down the lens. _________________ https://lensfever.com/
https://www.instagram.com/_lens_fever/
The best lens is the one you have with you. |
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dan_
Joined: 05 Dec 2012 Posts: 1054 Location: Romania
Expire: 2016-12-19
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Posted: Thu Mar 24, 2016 12:58 pm Post subject: |
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dan_ wrote:
Nordentro wrote: |
I have bought one in advance
It shouldn`t be too long before they ship now |
Have you received it, Lars?
I'm very curious to read your first-hand impressions, especially about the AF speed and about how well it handles heavier lenses. |
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dan_
Joined: 05 Dec 2012 Posts: 1054 Location: Romania
Expire: 2016-12-19
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Posted: Sun Apr 24, 2016 1:08 am Post subject: |
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dan_ wrote:
listera wrote: |
calvin83 wrote: |
... Any lens slower than F5.6 may not work too due to the limit of the phase detection system. |
This is an interesting point, that can leading to the view that even a f 1.2 lens will not "AF" if it was set to f8 during operation. |
From my experience with my DIY AF adapter my conclusion is that it is not the low light level that first limits the AF accuracy with some lenses set to f/8 or more but mainly the large DOF makes it difficult to find the best focus. With the diaphragm opened they often can AF very well in low light but with it closed the camera often has problems to AF even in strong light.
Therefore the max. f-stop usable for AF depends, IMO, on the FL of the lens. |
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calvin83
Joined: 12 Apr 2009 Posts: 7554 Location: Hong Kong
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Posted: Sun Apr 24, 2016 4:03 am Post subject: |
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calvin83 wrote:
Some people has already get the adapters and it seems it works pretty decent. There are two limitations which worth mentioning:
1. The focus point on the edge on some camera does not works very well compare to the focus point on the center region (e.g. A7RII)
2. The uniform of thickness is not as good as the MF focus helicoid. It should not be a problem with normal or tele lens but will affect those ultra wides. _________________ https://lensfever.com/
https://www.instagram.com/_lens_fever/
The best lens is the one you have with you. |
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Nordentro
Joined: 24 Jun 2010 Posts: 4713 Location: Lillehammer, Norway
Expire: 2015-01-29
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Posted: Mon Apr 25, 2016 3:58 am Post subject: |
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Nordentro wrote:
dan_ wrote: |
Nordentro wrote: |
I have bought one in advance
It shouldn`t be too long before they ship now |
Have you received it, Lars?
I'm very curious to read your first-hand impressions, especially about the AF speed and about how well it handles heavier lenses. |
Still waiting for mine Dan. I will share my thoughts as soon as I get it _________________ Lars | Manuellfokus.no |
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Antoine
Joined: 08 Jan 2016 Posts: 298 Location: London
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Posted: Mon Apr 25, 2016 3:53 pm Post subject: |
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Antoine wrote:
Quite impressive! Fact it does not perform very well under bad light conditinns does not bother me as it is usually better to go manual then. The nice thing, if there is a solution to use my Minolta MD lenses, is that you can use it when manual is going to cause you problems (such a wife's impatience,...) or when you are not too bothered with spending time doing reallya nice picture (some kind of event).
Will be looking forward to a model that would work _________________ Antoine
Sony A6000 APS-C and Sony A7 Rii
Minolta Fisheye MD Rokkor 7.5 mm f4, Fisheye MD 16 f2.8 MD R 17mm f4, MD R 20mm f2.8, MC VFC & MDIII 24mm f2.8, MD 28mm f2.0 &3.5, MD II 35mm 1.8, MD 45mm f2.0, MD 50mm f 1.2 & MD I f1.4, MC PG 58mm 1.2, MD 85mm f2.0, MD R 85mm f2.8 Varisoft, MC 85mm f1.7 MD R 100mm f2.5, MD R 100mm f4.0 macro, MD III 135mm f2.8, MD R 200mm f2.8 & 4.0, RF 250mm f5.6, MD 300mm f4.5, MD APO 400 mm f5.6, RF 500mm f8.0, RF 800mm f8.0 *2 300-s and 300-l
100 mm f4 macro bellows (5/4)
Vivitar 17mm f3.5, Elicar 300mm mirror f5.6, Zhongi turbo ii
Sigma 16mm f 2.8 fish eye
Zooms:24-50 mm f4, 35-70 mm f3.5 macro, 28-85mm f3.5-4.5, 50-135 f 3.5, 70-210 f4 and MD APO 100-500 mm f8 |
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kuato
Joined: 10 Feb 2015 Posts: 47
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Posted: Thu May 26, 2016 3:43 pm Post subject: |
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kuato wrote:
I received my adapter on Monday and have been doing some limited testing on my A7II. The focusing is accurate and pretty quick on moderate and abundant light, but it’s pretty slow (and sometimes non-working) on low light. The AF works on single-shot or continuous AF modes and smile/face detect also works. Even though some users have reported lockups, it hasn’t locked up on me yet. The focusing distance is 4.5mm so it will obviously work best with shorter focal lengths.
One thing to note is that some of the cheap LM adapters will NOT work with the techartpro without modification. (because of the front motor cover) I had to remove material from the Konica AR-LM adapter for it to fit and also had to modify the MAF-LM adapter. The Nikon F-LM adapter works fine without modification. |
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calvin83
Joined: 12 Apr 2009 Posts: 7554 Location: Hong Kong
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Posted: Thu May 26, 2016 4:44 pm Post subject: |
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calvin83 wrote:
Good to see the adapter work fine.
BTW, Yeenon made a set of adapter for this Techart adapter. They also work on Leica cameras with life-view too with support of 6-bit code.
stores.ebay.com.hk/yeenon-china/Leica-M-adapter-/_i.html?_fsub=12619805013 _________________ https://lensfever.com/
https://www.instagram.com/_lens_fever/
The best lens is the one you have with you.
Last edited by calvin83 on Thu May 26, 2016 5:24 pm; edited 1 time in total |
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kuato
Joined: 10 Feb 2015 Posts: 47
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Posted: Thu May 26, 2016 4:54 pm Post subject: |
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kuato wrote:
calvin83 wrote: |
BTW, Yeenon made a set of adapter for this Techart adapter. They also work on Leica cameras with life-view too with support of 6-bit code.
[url]stores.ebay.com.hk/yeenon-china/Leica-M-adapter-/_i.html?_fsub=12619805013[/url] |
Thanks for the info! I need to order an M42-lm. |
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Antoine
Joined: 08 Jan 2016 Posts: 298 Location: London
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Posted: Mon May 30, 2016 2:58 pm Post subject: |
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Antoine wrote:
In their projects, have they included some adapters where they could have more than the 4.5 mm they are limited to with Leica? Because if they could get up to a centimeter or more, that would be great even for small teles. Will probably wait until then to buy an A7 series x depending on the wait. Understand Minolta MD will not be top priority though... _________________ Antoine
Sony A6000 APS-C and Sony A7 Rii
Minolta Fisheye MD Rokkor 7.5 mm f4, Fisheye MD 16 f2.8 MD R 17mm f4, MD R 20mm f2.8, MC VFC & MDIII 24mm f2.8, MD 28mm f2.0 &3.5, MD II 35mm 1.8, MD 45mm f2.0, MD 50mm f 1.2 & MD I f1.4, MC PG 58mm 1.2, MD 85mm f2.0, MD R 85mm f2.8 Varisoft, MC 85mm f1.7 MD R 100mm f2.5, MD R 100mm f4.0 macro, MD III 135mm f2.8, MD R 200mm f2.8 & 4.0, RF 250mm f5.6, MD 300mm f4.5, MD APO 400 mm f5.6, RF 500mm f8.0, RF 800mm f8.0 *2 300-s and 300-l
100 mm f4 macro bellows (5/4)
Vivitar 17mm f3.5, Elicar 300mm mirror f5.6, Zhongi turbo ii
Sigma 16mm f 2.8 fish eye
Zooms:24-50 mm f4, 35-70 mm f3.5 macro, 28-85mm f3.5-4.5, 50-135 f 3.5, 70-210 f4 and MD APO 100-500 mm f8 |
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