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Old Feb 16, 2005, 11:30 PM   #1
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Having got my 20D and playing with it for some time, I was curious to know as to what were other canonites set their custom functions to.
So considering generally, besides the default settings, which custom functions do you change, to what and why?
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Old Feb 17, 2005, 6:10 PM   #2
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CFn2 - Long exposure noise reduction is on. It only kicks in when making a shot longer than 1 second and I figure I might as well just leave it on as I'd probably forget at the time of making the shot otherwise.

CFn8 - ISO expansion is enabled on my 20D. Why not give myself the option to shoot at 3200 if I want to.

That's about it as a standard thing. I've only had the camera for about a week and the only other one I've used so far CFn12 - mirror lockup, when playing with some long exposure close up shots.

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Old Feb 17, 2005, 7:41 PM   #3
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Thought I'd read something about longer image acquisition time when Cfn8-Extended ISO is turned on. Is this ONLY when using 3200ISO? If so, then why even make this a Cfn? Seems silly to me if the camera only takes longer when it needs to.

-- Mitch
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Old Feb 17, 2005, 8:18 PM   #4
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Hehe - guess I'll turn it off again and do bit of playing around. Thanks for raising that Mitch!
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Old Feb 18, 2005, 11:16 AM   #5
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Where did you read that???

There is no reduction of speed on my 20D.
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Old Feb 18, 2005, 12:33 PM   #6
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I don't think this is where I originally read it, but it appears to be the same explanation.

Check out the very last post on this thread:
http://photography-on-the.net/forum/...ion#post354011
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Old Feb 18, 2005, 4:26 PM   #7
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And now for a reply directly from Canon. Looks like I'm back to turning it on and leaving it that way! Notice that he didn't specifically answer all my questions (see my original note waaaay at the bottom).

-- Mitch



Dear Mitch Miller,

Thank you for contacting Canon product support.

The only option that this CF offers is the expansion. The file size will be larger when using ISO 3200 but no file size increases or any other changes occur because you have enabled this custom function.

Thank you for choosing Canon.

Sincerely,

Jason
Product Support Representative


Original Message Follows:
-------------------------

Does ISO Expansion have any other affect (other than just noise) on the
camera (ex: image processing time) when shooting < ISO3200?

My logic says that if additional noise processing is only done when
shooting ISO3200, why require one to enable a custom function?

Is CFn.8 just a "safety" precaution so one does not shoot 3200 w/o being

really concious of it, or does that turn on something else that remains
active even when not shooting 3200.

Another way of saying it would be ... Why ever turn off CFn.8?

Thanks,
Mitch
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