Odd green Mark on photos

Alpherah

Alpherah

Alpherah

Soldato
Joined
24 Jun 2008
Posts
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Posting on behalf of a mate..
On his d40 suddenly an odd green Mark has started showing up , always in the same place.
It looks like a green orb with a long green 'tail' coming off it and going mist the way across the pic.
It doesn't look like a sensor scratch though, any ideas ? Will post a sample tomorrow hopefully.

Edit

It only shows on approx 60% of images
 
Last edited:

Problem1 by Alpherah, on Flickr

Thats what it looks like, ignore the setting its just the only one he had available at the mo, it occurs in daylight bright sunshine as well.

Tried with 3 different lenses and it still happens, so it can't be the lens.. I'm at a bit of a loss.
Strangest thing is if you put it into burst and fire off 3 quick images of the same subject, usually 1 of them ends up perfect =/
 
Looks like a faulty sensor, possibly a transistor getting stuck on reading the red and blue components of the picture?(assuming its always in the same place) The burst mean that it gets unstuck eventually *shurg*

Just hypothesising here, never come across it myself before.

i
 
Looks like a defective pixel, other D40s have it, see here and look at the linky to the Nikon site at the bottom. Looks like a return to Nikon (repairer job). Might be worth while contacting Nikon direct to see if they can do anything for him.
 
Mm thanks guys, thats a bit sucky :( it was my old D40, and yeah its out of warranty!
Its an old Camera but i quickly upgraded to a D90 so it has less then 2k activations on this D40.
Basically new =( guess its going to be a pretty big repair cost too.
 
Andy90 said:
Been anywhere near a laser at a light show recently?
Click to expand...

Only a crappy disco (where the crop/shot/sample was from) so there's a chance there would be some lasers there (likely intact).
I've heard of lasers damaging the sensor but i would have thought they had to be a bit more intense then the likes an amateur DJ is likely to have?
 
Laser light is by it's very nature is very intense. It could have hit the sensor and caused the problem. Quite a few videos on Youtube, search on Laser Camera and damage, to see some where people have been at raves / discos where the laser has scanned across the sensor and burnt them out or caused localised damage.
 
It may not necessarily be laser damage, it wouldn't be unheard of for sensors to fail of their own accord causing the green pixelation/striping.

But yes I agree it looks like the sensor has had it.
 
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