Archived posting to the Leica Users Group, 2001/02/06

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Subject: [Leica] RE: Re: how can the 75 Lux focus go bad?
From: Jim Brick <jim@brick.org>
Date: Tue, 06 Feb 2001 18:48:00 -0800
References: <4.1.20010206171108.01cf4720@xsj02.sjs.agilent.com>
 
At 08:40 PM 2/6/01 -0500, Austin Franklin wrote:
>
>I believe you use the 75/1.4 quite frequently.  What do your images show as
>the DOF at 1.4?
> 

It is rather difficult to measure distance in a 2D print. I have a tulip,
photographed at f/1.4, at the closest focusing of my 75mm lens (~2'.) The
DOF is at best, the thickness of the surface skin (cells, protoplasm,
whatever) of the tulip. I would measure this as a few thousandths of an inch.

Jim
Replies: Reply from Jim Brick <jim@brick.org> ([Leica] RE: RE: Re: how can the 75 Lux focus go bad?)
 In reply to: Message from Jim Brick <jim_brick@agilent.com> ([Leica] Re: how can the 75 Lux focus go bad?)