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jamaeolus
Joined: 19 Mar 2014
Posts: 2964
Location: Eugene
Expire: 2015-08-20
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 Posted: Sat Apr 16, 2022 4:33 pm Post subject: Techart LM EA7 - AF for manual lenses, just amazing. |
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jamaeolus wrote:
I know some of you have been touting this contrivance but I just could not bring myself to pony up the 400 bucks. Watched ebay carefully for a while and finally snagged one for 180 dollars. I then got the LM to EF adapter and that allows me to use most of my plethora of manual lenses as I already had a bunch of EF adapters to OM, C/Y, PK, Exacta, m42 and probably others I am not remembering right now. I know I am a bit behind the curve (OK way behind the curve!) on this but wanted to give Techart a shout out on this amazing tech. I will purchase an MD to LM adapter soon. I currently have the following stack of adapters on my A7rii-LM-EA7-EF-OM-to Oly 90mm f2 macro.
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tb_a
Joined: 26 Jan 2010
Posts: 3678
Location: Austria
Expire: 2019-08-28
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| Posted: Sat Apr 16, 2022 5:10 pm Post subject: |
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tb_a wrote:
I'm glad that you are satisfied with your new acquisition. It's much more convenient to use all kind of manual lenses with the Techart adapter which I bought together with the A7R II.
For me it was the other way round: Without the Techart I would not have bought the Sony. 
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Thomas Bernardy
Manual focus lenses mainly from Minolta, Pentax, Voigtlaender, Leitz, Topcon and from Russia (too many to be listed here). |
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blotafton
Joined: 08 Aug 2013
Posts: 1616
Location: Sweden
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| Posted: Sun Apr 17, 2022 7:12 am Post subject: |
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blotafton wrote:
I'd like one too. It would make it a lot easier to photograph my dogs!
My first AF lens showed that, a Samyang 75mm 1.8. |
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calvin83
Joined: 12 Apr 2009
Posts: 7555
Location: Hong Kong
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| Posted: Sun Apr 17, 2022 7:19 am Post subject: |
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calvin83 wrote:
I have not decided if I need one. May be after I upgraded my RII to something else. 
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The best lens is the one you have with you. |
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jamaeolus
Joined: 19 Mar 2014
Posts: 2964
Location: Eugene
Expire: 2015-08-20
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| Posted: Sun Apr 17, 2022 5:14 pm Post subject: |
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jamaeolus wrote:
Well it is not a perfect solution but useful.. is there a way to quickly override the AF if you want? I was at a pond yesterday and a mallard swam out in front of me. Nicely framed by some willow branches. The AF would only focus on the willows.
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tb_a
Joined: 26 Jan 2010
Posts: 3678
Location: Austria
Expire: 2019-08-28
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| Posted: Sun Apr 17, 2022 5:23 pm Post subject: |
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tb_a wrote:
| jamaeolus wrote: |
| Well it is not a perfect solution but useful.. is there a way to quickly override the AF if you want? |
Indeed, but there is no better solution for MF lenses available.
The button in the center of the AF/MF-AEL switch turns the camera instantly in MF mode as long as you press it. The switch must be set to AF/MF. The normal MF setting is not possible with the adapter attached.
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Thomas Bernardy
Manual focus lenses mainly from Minolta, Pentax, Voigtlaender, Leitz, Topcon and from Russia (too many to be listed here). |
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Antoine
Joined: 08 Jan 2016
Posts: 298
Location: London
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| Posted: Sun Apr 17, 2022 7:28 pm Post subject: |
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Antoine wrote:
Thanks a lot for the tip. The techart does not always focus and I did not know how to switch it off.
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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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jamaeolus
Joined: 19 Mar 2014
Posts: 2964
Location: Eugene
Expire: 2015-08-20
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| Posted: Wed Apr 20, 2022 11:53 pm Post subject: |
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jamaeolus wrote:
One other tip I thought I would relay. At first the screen was way dark when using it whereas I am used to "what u see is what u get" Then I discovered that the front dial for F stop was dialed down. Normally for lenses not electronically linked it reads -- and ha no function. I dialed it to f2 and all of a sudden it works like I expected.
Separately I have a query for AF experts. I understand how a digital sensor can detect lines of demarcation and decide a picture is in focus. How did film cameras achieve AF?
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vivaldibow
Joined: 23 Jun 2018
Posts: 841
Expire: 2021-03-09
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| Posted: Fri Apr 22, 2022 6:48 am Post subject: |
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vivaldibow wrote:
I use Techart adapter for fast lenses, such as 135/f2, 105/1.8, 85/1.4 or 50/55/1.2. For other lenses, I am still doing manual focus; otherwise I would be losing the joy of vintage lenses. Manual focusing itself is a big part of it.  |
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calvin83
Joined: 12 Apr 2009
Posts: 7555
Location: Hong Kong
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| Posted: Fri Apr 22, 2022 7:23 am Post subject: |
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calvin83 wrote:
| vivaldibow wrote: |
| I use Techart adapter for fast lenses, such as 135/f2, 105/1.8, 85/1.4 or 50/55/1.2. For other lenses, I am still doing manual focus; otherwise I would be losing the joy of vintage lenses. Manual focusing itself is a big part of it. |
YES!
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https://lensfever.com/
https://www.instagram.com/_lens_fever/
The best lens is the one you have with you. |
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