Archived posting to the Leica Users Group, 2006/11/01

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Subject: [Leica] M8 & Depth of Field
From: leewaileong19 at (Lee Wai Leong)
Date: Wed Nov 1 06:28:24 2006

Another way to look at it is this:

Same lens, same focus distance, smaller sensor means you have to enlarge 
more to get the same sized print.

More enlargement means any focus errors will be magnified. Hence DOF must be 

"I don't make any calculations - am not really interested in the 
mathematical aspects of photography - but a few months ago I did just a few 
empiric tests with 
the same 50mm/1.2 lens wide open on a M6 and a R-D1 (with it's crop factor 
of 1,5). It seems to be the opposite - on the R-D1 shots there was visibly 
DOF. Same lens/smaller format = MORE DOF."

I think it's likely you shot the same subject from different distance, 
due to the crop factor.

Lee Wai Leong 

"And if you play golf, you're my friend..."
 The all-new Yahoo! Mail goes wherever you go - free your email address from 
your Internet provider.

Replies: Reply from rangefinder at (Didier Ludwig) ([Leica] M8 & Depth of Field)