Archived posting to the Leica Users Group, 2014/02/21

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Subject: [Leica] OT - Sony Alpha 7R
From: red735i at (Frank Filippone)
Date: Fri, 21 Feb 2014 21:37:54 -0800
References: <>

That would require calibration of each lens ( maybe they all act the

I would think of this as a really good idea, but I also thought a R10 was a
really good idea......

Frank Filippone
Red735i at

Frank Filippone wrote:

>If you are focusing at working aperture, what advantage is there to 
>native lenses?
>I'm not so sure Sony has this thought out......

For those who are interested in such things, native-mount lenses will allow
shutter-priority and program exposure modes, and AF.

Another way to handle focus shift would be to program the lens to tell the
camera how much shift there is at various apertures.  Given this would be a
native-mount lens the camera would know what aperture the lens will be

Doug Herr
Birdman of Sacramento

Replies: Reply from sonc.hegr at (Sonny Carter) ([Leica] OT - Sony Alpha 7R)
In reply to: Message from wildlightphoto at (Doug Herr) ([Leica] OT - Sony Alpha 7R)