E-510: Red dots + white dots on photos

[SeineRiver]

Hi all,

My E-510 now got red dots/white dots on the photos (previously I did not see them). Anybody encountered this before, is it because of the hot sensor or smthing? Actually I never take a shot with too long exposure

Thanks for help

[spidey89]

show picture,if not we wouldn't know

[SeineRiver]

Yeah sorry, I'm currently in office. Will update the picture tonight

[Benares]

Originally Posted by SeineRiver Yeah sorry, I'm currently in office. Will update the picture tonight

How old is your camera? You might want to do a pixel-mapping (a feature within the camera body). My primary suspect based on your inputs (the picture was not taken with long exposure) is that, the sensor might have hot pixels. Just a hunch.

[SeineRiver]

Here's one of the photo. You can click on the photo and view at fullsize to see 2 red dots near the middle of the photo and one bright dot to the top right. There're some more having the same problem.



Any chance that I should send in for service?

Thanks

[headfonz]

i suggest you try doing a pixel mapping as suggested by Benares. looks like hot pixels. are the spots always at the same place or is it randomly distributed?

i noticed that your shutter speed was at 1sec, wrotniak did an article on hot pixels on the E510. the Noise Reduction function only kicks in at shutter speeds slower than 8 secs.

so even if you have the NR on, it will not work for slow shutter speeds faster than 8 secs and thus the reason why the hot pixels will persist even if you have done pixel mapping. you can read the full article here: http://www.wrotniak.net/photo/43/e510-dark.html

[SeineRiver]

Thank all I'll try the pixel mapping. My camera is 1 year 4 months old, the spots always at the same place, red ones are always red and bright ones are always bright, that's why I did not think that it was because of noise.

[drewdam]

Originally Posted by SeineRiver Thank all I'll try the pixel mapping. My camera is 1 year 4 months old, the spots always at the same place, red ones are always red and bright ones are always bright, that's why I did not think that it was because of noise.

these are hot pixel...it will still there after pixel mapping, all u need to do is just set the noise reduction ON if u shoot longer than 4s onward

[drewdam]

Originally Posted by headfonz i suggest you try doing a pixel mapping as suggested by Benares. looks like hot pixels. are the spots always at the same place or is it randomly distributed? i noticed that your shutter speed was at 1sec, wrotniak did an article on hot pixels on the E510. the Noise Reduction function only kicks in at shutter speeds slower than 8 secs. so even if you have the NR on, it will not work for slow shutter speeds faster than 8 secs and thus the reason why the hot pixels will persist even if you have done pixel mapping. you can read the full article here: http://www.wrotniak.net/photo/43/e510-dark.html

NR it will work from 4sec from onward if i remember..

[splim]

Originally Posted by drewdam NR it will work from 4sec from onward if i remember..

last time it was like this, http://www.clubsnap.com/forums/showp...0&postcount=15 ,not sure if it has changed after firmware upgrade.