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muerte
21st of August 2003 (Thu), 08:54
Hi all,

I'm new to this forum, so hi all :)...

Few days ago i bought a new G3 and quickly discovered that i had really annoying problem with hot pixels. And it was especially bad since there were clusters or groups of them. 2 groups, one green, one blue...

The green one had approximately 15 pixels, and the blue one at least 30... It looked like it was interpolated or antialiased, but it was in a TIFF (RAW), so no interpolation was done.

I went back to the store with an laptop and we tested another cam which is clear as a baby's butt :)

Anyways, i wanted to ask, why doesn't Canon implement remapping feature in G3/5 firmware, like Olympus does for example? It's such a simple feature, they simply "turn off" the pixel in question, and interpolate it from the nearest one. Works like a charm in c5050...

Marko

jazcan
21st of August 2003 (Thu), 10:31
You could write to them about it. I did but they said there are no plans in the near future for such a firmware update. It would certainly make life easier for the end-user and cut down the amount of cams brought in to their repair centers since that is the only way to have the pixels mapped out at the present time!

nomel
22nd of August 2003 (Fri), 16:57
I know there is software you can use to do this for use after you take the picture and put it on the computer. It does it using a black frame subtract?

The camera has this built in, but only for shutter speeds longer than 1 second (if I know the shutter speed will be about 1 second, i jsut put it on TV and set it a little over so the feature is used).

I would take it back, cause that sounds very bad. I have some hot pixels, but only about 3, and the third is barely visible.

muerte
23rd of August 2003 (Sat), 14:10
Yeah, like i said, i went back to the store with my laptop and we tested another cam which was okay, so we exchanged the cams. They were very understanding so i guess i was very lucky when i chose them to buy the cam. :)

But... although i know that hot pixels will eventually develop even on this one, i won't do any more tests. If i don't see it on normal photos, i won't search it. I think it's okay to test your cam when you purchase it, but to constantly look for that single pixel... I think the cam then looses it's purpose.