Archived posting to the Leica Users Group, 2003/10/20

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Subject: RE:[Leica] Is digital photography necrophilia?
From: Félix López de Maturana <fmaturana@euskalnet.net>
Date: Mon, 20 Oct 2003 22:23:00 +0200

> Tina-
> Using the Digital Albums, how do you determine if your DSLR sensor has
> gathered dust throughout the day?  Of course, how would you "know" 
> that your
> camera isn't scratching your film?
>
>if you want to check that kind of thing, you just take along a 2-3lb PC 
>laptop with a 40GB drive in it.
>
>might still be lighter than 300 rolls of film.
>
>Pete
- -

As the Leica R digital back will be here next year I suppose this matter is
On Topic. 

Not unavoidably! I use to shoot every three or four days a paper blank sheet
and with the loupe of the LCD back screen you can detect if the sensor has
gathered some dust. At home/studio is much easier as you can see in the PC
screen. 

Most of the DSLR have a non perfect color temperature system and the blank
sheet is useful too for controlling the right color temperature so your
pictures will be without any color cast.

Really the dust is the biggest problem with DSLRs and it could be even worse
with a sensor built in a interchangeable back like next Leica R digital
back. The quantity of the gathered dust depends on the size of the sensor so
a full format (24x36) sensor gets really a lot and has to be cleaned every
day if the photographer work is developed on a dusty site. 

The small sensors have much less dust problems.

Fortunately a complete cleaning is a very easy task once the accessories,
swab and cleaning liquid, is obtained and the right experience is learnt.

I hope the new Leica R digital back get a metal slide sheet for isolating
the sensor when extracted from the camera as otherwise this could be a
nightmare.

Felix


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