[Leica] new Puts article

[mail at steveunsworth.co.uk (Steve Unsworth)]

Is this true? Since you have to enlarge a cropped version more won't the
circle of confusion come into play - i.e. the depth of field will reside
some where between the 35mm and 1.5 version.

Steve


-----Original Message-----
From: lug-bounces+mail=steveunsworth.co.uk@leica-users.org
[mailto:lug-bounces+mail=steveunsworth.co.uk@leica-users.org] On Behalf
Of B. D. Colen
Sent: 25 June 2005 19:51
To: Leica Users Group
Subject: Re: [Leica] new Puts article


Nope. The depth of field is indeed independent of the crop - it's the
same as the "real" focal length of the lens. But that means that when
you shoot with a 35 mm lens with a 1.5 crop factor, you are getting an
image that looks like you shot it with a 52 mm lens, but with the depth
of field of a 35. So your 50 1.4 becomes a 75 1.4, but with the depth of
field of a 50 1.4
- which actually is probably an advantage in that case. :-)

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