Archived posting to the Leica Users Group, 2009/02/06

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Subject: [Leica] Perspective
From: oliverbryk at comcast.net (Oliver Bryk)
Date: Fri Feb 6 16:15:14 2009
 
Don wrote:

Subject: Re: [Leica] Is the DOF using a digital sensor any different than 
that of film?


> Vick,DOF depends on focal length of the lens, aperture used, and distance 
> to
> subject, and the degree of enlargement to some extant.  So, with a crop
> sensor you tend to use a wider lens at a greater distance than that same
> focal length on a 24x36; ergo greater apparent DOF.  On the other hand, if
> you use the same focal length at the same aperture at the same distance 
> and
> enlarge the same then the same apparent DOF; you will however get a
> different perspective as the crop sensor will not include as much of the
> scene.


AFAIK one would get the same perspective from the same camera position,
regardless of the crop factor or focal length used.
Oliver