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Archive 2014 · Techart Contax G > Nex Adapter Final Version?

  
 
trogdon
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p.2 #1 · p.2 #1 · Techart Contax G > Nex Adapter Final Version?


Don't mean to bump again, but I bought one of these and the AF is not accurate at all at any aperture. I do recall somewhere reading something about setting the aperture on the camera to f90, then making the camera autofocus, then adjusting the dial to basically micro adjust the lens focus? I haven't been able to find anything since, but if this is possible it would make me use it a bit more


May 23, 2015 at 11:48 AM
hiepphotog
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p.2 #2 · p.2 #2 · Techart Contax G > Nex Adapter Final Version?


trogdon wrote:
Don't mean to bump again, but I bought one of these and the AF is not accurate at all at any aperture. I do recall somewhere reading something about setting the aperture on the camera to f90, then making the camera autofocus, then adjusting the dial to basically micro adjust the lens focus? I haven't been able to find anything since, but if this is possible it would make me use it a bit more


Calibrate the focus on this adapter is like jumping through hoops. You can re-read the manual (not very clear but it's there). What I remember is that you set the f value to f/32, then focus on a point. Depending if it's front or back focus, you can set the lens to certain f value to correct for that and take a picture. Unfortunately, at least with the one I used to have, this only works at a certain distance. However, stopping the lens down by one stop gave me better result. I think you should return yours if it's not such a hassle.



May 23, 2015 at 12:38 PM
serhan_
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p.2 #3 · p.2 #3 · Techart Contax G > Nex Adapter Final Version?


I never updated mine but sb posted in dpreview a few days ago:
http://www.dpreview.com/forums/thread/3845976#forum-post-55838838

From those posts, af update instructions and video:
http://media.wix.com/ugd/df6d77_d6232cdd268845e49522399bcd529fd0.pdf

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May 23, 2015 at 12:44 PM
trogdon
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p.2 #4 · p.2 #4 · Techart Contax G > Nex Adapter Final Version?


Bought it here on FM, will try the calibration but if that doesn't work might just reach out to MXcamera. I think the adapter is great for manual focus, but it doesn't stick in manual focus mode so that's irritating


May 23, 2015 at 12:54 PM
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