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

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Subject: [Leica] Is the DOF using a digital sensor any different than thatof film?
From: jhnichols at lighttube.net (Jim Nichols)
Date: Fri Feb 6 19:16:04 2009
References: <BLU0-SMTP504288C23B0AA68D8D767D8CC00@phx.gbl><9b678e0902051925v4dd7d486pd58bff41a6434fae@mail.gmail.com><BLU0-SMTP472FC431CEE402999C8AAB8CC10@phx.gbl> <4cfa589b0902061752h78cf5434t1463edeebf766efd@mail.gmail.com>

Adam,

My understanding is the same as yours.

Jim Nichols
Tullahoma, TN USA
----- Original Message ----- 
From: "Adam Bridge" <abridge@gmail.com>
To: "Leica Users Group" <lug@leica-users.org>
Sent: Friday, February 06, 2009 7:52 PM
Subject: Re: [Leica] Is the DOF using a digital sensor any different than 
thatof film?


>I think you're answering a different question. The question I heard
> essentially says this: "If I shoot a 50mm lens on my M8 will the depth
> of field be identical to the image made by an M6 with the same lens
> (cropped to match the M8).
>
> I would say the answer has to be yes. I cannot make my head wrap
> around any different answer.
>
> Adam
>
> On Fri, Feb 6, 2009 at 4:45 AM, Vick Ko <vick.ko@sympatico.ca> wrote:
>> Bingo!
>>
>> That's it - the 50mm with a cropped frame is a different perspective than 
>> a
>> true 100mm lens !!!!
>>
>> Or to truly exaggerate the phenomena, use a very wide angle lens, and 
>> crop
>> the image to equivalent to the longer focal length (e.g 18mm cropped to 
>> what
>> a 75mm will show).  I'm thinking the image will have the perspective of 
>> the
>> 18mm lens (i.e. large nose if image is a face), but image size might be
>> equivalent to the 75mm.
>> DOF is whatever the 18mm lens aperture was set at.
>>
>> Right?
>>
>> Vick
>>
>>
>> Don Dory wrote:
>>>
>>> Vick,
>>
>> ....; you will however get a different perspective as the crop sensor 
>> will
>> not include as much of the scene.
>>>
>>>
>>
>>
>> _______________________________________________
>> Leica Users Group.
>> See http://leica-users.org/mailman/listinfo/lug for more information
>>
>
> _______________________________________________
> Leica Users Group.
> See http://leica-users.org/mailman/listinfo/lug for more information
>
> 



Replies: Reply from red735i at earthlink.net (Frank Filippone) ([Leica] Is the DOF using a digital sensor any different than thatof film?)
Reply from imagist3 at mac.com (George Lottermoser) ([Leica] Is the DOF using a digital sensor any different than thatof film?)
In reply to: Message from vick.ko at sympatico.ca (Vick Ko) ([Leica] Is the DOF using a digital sensor any different than that of film?)
Message from don.dory at gmail.com (Don Dory) ([Leica] Is the DOF using a digital sensor any different than that of film?)
Message from vick.ko at sympatico.ca (Vick Ko) ([Leica] Is the DOF using a digital sensor any different than that of film?)
Message from abridge at gmail.com (Adam Bridge) ([Leica] Is the DOF using a digital sensor any different than that of film?)