canon 40d / red spot
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- stewart
when i zoom in on the pictures i can see there's a 8px wide red spot on every picture i take with my new 40d.
with different lenses it stays on the same place every picture. it looks like it's getting worse when using longer exposure times (>30 seconds).what's wrong here?
- nicnichols0
dead spot or dirt on the chip...
did you try cleaning the chip?
...do so carefully.. read what cannon says in the manual about chip cleaning-
- zaq0
- epigraph0
send it in if it's new
- zaq0
- ok_not_ok0
dead pixel. return it and ask for a new one.
- stewart0
it cleans the sensor every time i switch it on or off.
i can't believe it's dust because it's a red bright spot, and not a dark one...
- nikdaum0
Must be the camera's time of the month. Just flatter it and tread lightly and it will go away in a few days.
- slappy0
Most cameras have the odd dead pixel, I think there is a procedure for mapping it out.
Try putting the camera into cleaning mode for 30 seconds while leaving a lens with lens cap on. Supposed to auto fix the stuck/dead pixels. Worth a shot eh?
My old 300D has like 20 of them. They will look worse on long exposures. If you send your camera in they will just map out the pixel and send it back.
- ninjasavant0
maybe a sniper is trying to kill something in all of your shots
- rafalski0
It's not a dead pixel, that would be black (or white depending on technology I think). It's a row of stuck pixels. 8 in a row might be enough for a warranty call.
Insist on a replacement, rather than fixing it. Fixing means mapping pixels out to show what neighbouring ones are showing.
- albertOCAMPO0
yeah, get it replaced if its new. if it's 40d, it should be new enough
- Doorman0
yep....technology sometimes has issues.....rtn it for a swap > ask for a new one...not a repair or anything else. Canon got the cash to do it....its not the retailers fault. Manufacturers defect. Dont wait longer ask for a swap!....
- omgitsacamera0
Dead Pixel?
One way of clearing them is leave the camera on bulb or 30 second exposure without a lens. (or probably with a body camp.)
- Doorman0
not sure that 40d has that B option...has it?
- I think you just put it on either S or M and turn the dial all the way back to bulb.omgitsacamera
- jaylarson0
hot pixel.
- dibec0
Nope. That is way a stuck pixel. Hot pixels are usally white.
Can you do a test for me? Take 4 shots. two on a white background - 30 secs (high fstop, and low fstop). Another on black background - 30 seconds (high fstop, and low fstop).