Archived posting to the Leica Users Group, 2005/01/08

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Subject: [Leica] BESSA R3A or M7
From: telyt at earthlink.net (Doug Herr)
Date: Sat Jan 8 05:50:52 2005
 
on 1/8/05 3:34 AM, Bill Marshall at billgem@hotmail.com wrote:

> Zeiss did talk about focus shift in its lead up to Photokina & it
> is again mentioned on it Zeiss Ikon website. Specifically, it says that its
> lenses are designed to "minimize focus shift."

AFAIK, focus shift is caused by residual spherical aberation.

Doug Herr
Birdman of Sacramento
http://www.wildlightphoto.com
Replies: Reply from jefferys at gmail.com (Jeffery Smith) ([Leica] BESSA R3A or M7)
 In reply to: Message from billgem at hotmail.com (Bill Marshall) ([Leica] BESSA R3A or M7)