CP4500 has a RAW mode!

Started Jan 21, 2003 | Discussions thread
OP AlexY Forum Member • Posts: 98
White surface?

Have you tried the version 4? the 995 support should be improved there though I am not sure it is tested with it. The versions starting from 3 are supporting "dead" (dark) pixels mapping as well as "hot" (bright) pixels mapping. Paul69 is writing that it is not clear yet how to use the dead pixel mapping. Theoretically for this purpose the camera should be presented with evenly illuminated white surface for example a white ceiling. I think the most important is to get the even illumination of the surface and also the surface probably should be out of focus so the small inregularities of it wouldn't count as dead pixels. I suppose for hot pixel mapping the camera should be presented with black (closed cap) but I think it does automatically close the shutter just like it does when performing NR in 4500 (black frame reduction).

Alex

MariusN wrote:
Alex,

What should be in front of the lens during those calibration/bad
pixel remapping shots?

Would be ok to have the lens cap on or do we have to put some sort
of white surface in fornt of the lens, in good and uniform light?

I am just testing out the 3 versions of the Paul's program with my
995. Is curious that none of them could read any bad pixel from the
camera, is like there are is no bad pixel map on my 995. Bad pixel
mapping was done on this camera in the past and right now there are
several stuck pixels on the CCD, clearly visible as hot (bright
pink, green, bluem I have all colors..) at 1/4 sec shutter speed,
even at 1/60 sec (ISO 100, etc).

Does Paul have any chance to test this program with another
Coolpix? Anyone else here willing to give it a test shot, just to
see if is reading the bad pixels with other Coolpix models trhan
2500 that Paul has?

Thanks,
Marius

AlexMld wrote:

To make the camera to recalculate the table you
need to press Remap. The camera starts doing some shots etc for
about 10 sec - this is OK.

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