[Leica] Is the DOF using a digital sensor any different than thatof film?

[leica at web-options.com (Bob W)]

> I never understood that. With a crop sensor, isn't it just 
> like shooting 
> with a third of the 36 x 24mm frame covered?

The short answer is Yes.

The long answer is, hmm, well, it depends. The important thing to consider
is the size of the circle of confusion, which does depend on film format /
sensor size and the degree of enlargement you want.

Bob 

> -----Original Message-----
> From: lug-bounces+leica=web-options.com@leica-users.org 
> [mailto:lug-bounces+leica=web-options.com@leica-users.org] On 
> Behalf Of Vick Ko
> Sent: 05 February 2009 22:27
> To: Leica Users Group
> Subject: [Leica] Is the DOF using a digital sensor any 
> different than thatof film?
> 
> Is the DOF using a digital sensor (e.g M8, Pana G1) any 
> different than 
> that of film?
> 
> In a question on Rangefinder forum, I was asking about using 
> the Pana G1 
> as the most economical way to play "digital M", and got into a 
> discussion on "loss of DOF" with digital sensors.
> 
> I never understood that. With a crop sensor, isn't it just 
> like shooting 
> with a third of the 36 x 24mm frame covered?
> 
> The razor thin DOF of my Noctilux is still razor thin, just that the 
> image that I'm taking is like cropping it to that of a 100mm 
> lens. Or, 
> to think of it another way, my Noctilux becomes a 100mm f1 portrait 
> lens, a focal length that once was considered close to perfect for 
> portraits.
> 
> And fortunately, with the Panasonic, I see what I'm framing.
> 
> Isn't that so, about the DOF?
> 
> regards
> Vick
> 
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