CP4500 has a RAW mode!

Started Jan 21, 2003 | Discussions thread
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MariusN Forum Member • Posts: 84
Re: Hotpixel remapping: My results

In my case I am using BSS a lot in long exposures with no tripod and unfortunately NR is not available when BSS is enabled. The stuck hot pink, green and blue pixel groups that I had (at least 4 pixels for each, due to the Bayer interpolation) were very, very annoying for me. And all were visible even at normal indoor shutter speeds of 1/60 sec. On really long exposures - a few seconds at least - I would get such a "constellation" of hot pixels that not even NR wouldn't be able to filter them all out. Now after the remapping 8" long test (lens cap on) exposures are absolutely clean to the eye on 100% on a big computer monitor, no hot pixel visible, and this even without NR.

Ed Rotberg wrote:

Personally I have tried not to obsess about hot pixels too much.
First, they are mostly only visible for long exposures. Secondly
the NR function does work well in those cases. Third, if I can't
see them in my normal pixtures, I'm not going to compain about it.

I did the remapping on my images because of the occasoinal long
exposures that I do and the fact that there were 6 hot areas VERY
visible when I had NR turned off. But to be honest, I usually just
turn on NR for those cases. The nice thing about doing the remap
is that I can get away with forgetting to turn NR on, which
occaisonally happens, and I did not have to give up my camera to
get it done.

I would suggest just taking a 4 second shot with your lens cap on
and NR off, and then looking at it at 100% magnification on your
monitor. If you don't see any hot pixels jump out at you - don't
sweat it!

= Ed =

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