View Full Version : faulty sensor?
squarepeg@iolfree.ie
28th of May 2006 (Sun), 06:10
I have just got an S2IS and have been pretty impressed with it. However, on some shots with bright sky in I get a sort of steaky effect like a badly cleaned window. Iwill try and attach an example with the contrast boosted to enhance the effect. Has enyone else seen this and is it a faulty sensor? Or is there another explanation?
thanks Chris
DavidW
28th of May 2006 (Sun), 07:44
JPEG attachments have to be reduced to no more than 800 pixels on the longest side, and no more than 100KBytes.
If you can't meet those requirements, either crop the picture (posting full sized crops is often a good technique to show problems), or upload the picture to web space somewhere and post a link.
David
ba15ck
29th of May 2006 (Mon), 13:03
i think we need to see the picture
how did you meter for the shot--did you just shoot, or did you meter for the sky, the brightest part of the sky, the forground--was the forground bright/reflective or was it dark?
This may have an effect on your results
was there a smear or somthing on the lens?
squarepeg@iolfree.ie
3rd of June 2006 (Sat), 14:48
Had another go (looks like it worked this time) at attaching an example of the fault. As can be seen, this pattern of streaks is on all pics that have bright areas of ,for instance, sky. I think it must be the sensor as the lens is clean, at least on the external surface.I have been looking thro all the pics I've taken, and it is possible to see this on many of them, even those without bright sky, tho' it's possible that side lighting is a factor.
I will have to contact the supplier with regard to getting something done eg a replacement.
ba15ck
5th of June 2006 (Mon), 13:16
how old is the camera--any chance that moisture has entered the camera--in any event, this is not normal and I would strongly recommend taking/sending it to a canon service center--call them first and try to explain, though they are like to just tell you to take it or send it in.
metoyou
6th of June 2006 (Tue), 17:23
I'm not too familar with your camera, but I have seen this type of vertical banding on other cameras. The shot seems to be under exposed, which may or may not have something to do with this problem. Also, could I ask if you have seen this effect to this degree on other shots with the same camera? Does it only happen with one particular make of card or on any make of card?
Finally, did you accidentally remove the card before it had finsihed processing and was the battery near run down?
Just some thoughts and questions which may possible help you.
squarepeg@iolfree.ie
23rd of June 2006 (Fri), 14:16
I'm not too familar with your camera, but I have seen this type of vertical banding on other cameras. The shot seems to be under exposed, which may or may not have something to do with this problem. Also, could I ask if you have seen this effect to this degree on other shots with the same camera? Does it only happen with one particular make of card or on any make of card?
Finally, did you accidentally remove the card before it had finsihed processing and was the battery near run down?
.
The pic is deliberately under-done to accentuate the effect as it is downsized for the web.many other shots are affected, mainly those with bright areas such as sky. It is seen in the viewfinder so isn't card related. Batteries were fresh and there were no other operater mistakes either, so it would seem to be a definately sensor fault.
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