Tom's Hardware > Forum > Digital Camera > Digital Camera General > Canon 20D
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bub   01-15-2005 at 04:18:44 AM

Archived from groups: rec.photo.digital (More info?)

 

Does the Canon require a black frame to remove hot pixels on long exposures
are does it not have them.

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Anonymous   01-15-2005 at 04:18:45 AM
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Archived from groups: rec.photo.digital (More info?)

 

Yes, it has it, but you can turn it off. From dpreview...

"Control of Long exposure NR - The EOS 20D now allows you to disable
long exposure noise reduction (dark frame subtraction) and Canon claims
even better long exposure performance than the 10D."

Personally, I wouldn't turn it off, unless you are in a hurry between
images, and/or are going to do the processing yourself..

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Anonymous   01-16-2005 at 05:04:57 AM
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In message <vIadneVDbOQ0BHXcRVn-oA@comcast.com>,
"Bub" <Bub@comcast.net> wrote:

>Does the Canon require a black frame to remove hot pixels on long exposures
>are does it not have them.

The twenty-dee will do black frame subtraction on images a second or
more in exposure, *if* you enable the feature in the custom functions.
--

<>>< ><<> ><<> <>>< ><<> <>>< <>>< ><<>
John P Sheehy <JPS@no.komm>
><<> <>>< <>>< ><<> <>>< ><<> ><<> <>><

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