Search results for 'sensor cleaning' - page 605
Pentax-F AF adapter 1.7x
I purchased acetone and made an attempt at cleaning the glass on the adapter. Sadly the problem seems to lie under the glass, and according to a repairman I contacted, it is probably not possible to clean/repair the adapter. The seller was not interested in lowering his initial price, so I returned ...
Posted by bjolester on 19/09/2011 - 14:15
Pentax-F AF adapter 1.7x
When attempting to remove residue/stains from the adapter glass I used acetone with the outmost care, and only on the glass surface. What chemicals to use when cleaning camera lenses seems to be a contested field, and I would welcome a new tread where this theme is discussed in depth! Best re...
Posted by bjolester on 19/09/2011 - 22:42
Pentax-F AF adapter 1.7x
Another option if you don't mind spending a few extra pounds (as you got it at a decent price) is to send it to Johnsons Photopia for cleaning/service.They will give you a free quote and it will only cost post and packing if you decide not to go ahead.
Posted by truckerathome on 20/09/2011 - 00:24
Pentax-F AF adapter 1.7x
What chemicals to use when cleaning camera lenses seems to be a contested field, and I would welcome a new tread where this theme is discussed in depth! Best regards Bjørn I agree. Acetone was often recommended in the past as a lens cleaner. I suppose that dates from the era of glass lenses an...
Posted by George Lazarette on 26/09/2011 - 22:09
K20D sensor problem
Hi I am devastated. I got K20D few weeks ago. It was great. i sold my k100d which I loved by the way. I just today I noticed something that looks like a dead pixel, but it is quite large. When on long exposure it even adds a line running through most of the picture. I looked at my previous photos ...
Posted by Pietrach on 19/09/2011 - 12:29
K20D sensor problem
Really bad luck. The cost of replacing the sensor would be almost certainly more than the camera is worth. That looks serious and I can offer no more than sympathy. Johnson's Photopia are the repair centre, I have found them to be very good with all the warranty repairs that I had with my K20.
Posted by DrOrloff on 19/09/2011 - 12:33
K20D sensor problem
It doesn't look quite like a sensor defect to me, since those would normally consist of totally-black or totally-white pixels. The line in the second shot looks slightly uneven in tone for it to be completely-dead pixels. What does it look like if you take a normal exposure shot with the lens ca...
Posted by karma mechanic on 19/09/2011 - 12:48
K20D sensor problem
It looks similar to this issue:
Posted by greynolds999 on 19/09/2011 - 12:51
K20D sensor problem
Karma: I posted dark image so that you can see where this is. Look on the right side of the tower, on the sky. (photo above is rotated) the line goes through the entire length on one side, but fades away on the other side. On short exposures this dot is smaller and the line is not visible. ...
Posted by Pietrach on 19/09/2011 - 12:54
K20D sensor problem
I think I've seen this problem before on here but can't find it now. Where did you get the camera? If it's lasted only a few weeks, did the supplier give any kind of warranty?
Posted by Mannesty on 19/09/2011 - 12:58
K20D sensor problem
Somewhere in the setup menu there is a function called 'pixel mapping' or 'defect removal' depending on camera. This allows the internal image processing to identify bad pixels and map a value to them based on their neighbours. You've got nothing to lose by trying it.
Posted by karma mechanic on 19/09/2011 - 12:59
K20D sensor problem
I think I've seen this problem before on here but can't find it now. Maybe the situation that elvisboy showed in a picture of a robin? That's what I meant by a 'hard' line of pixels, as opposed to this case where it looks like a much softer effect so maybe not the same cause.
Posted by karma mechanic on 19/09/2011 - 13:03
K20D sensor problem
Camera was bought second hand on other photo forum and worked well for first few weeks. thanks Karma, I will try this tonight. To be honest, I cannot see any hope but as you said - nothing to lose. If it does not work, I will be cloning this out on every picture until I get new camera (probably n...
Posted by Pietrach on 19/09/2011 - 13:04
K20D sensor problem
Found the thread I was thinking of . The OP's images have gone but there is close up of the 'bright spot' part way down the thread.
Posted by Mannesty on 19/09/2011 - 13:05
K20D sensor problem
Looks identical to me, and in that thread the poster said he'd already tried pixel mapping so can probably scrap that idea. Bad news I think, unless there is some warranty :(
Posted by karma mechanic on 19/09/2011 - 13:10
K20D sensor problem
s**t :(
Posted by Pietrach on 19/09/2011 - 13:18
K20D sensor problem
When I scratched the sensor of my K10D they quoted mt £189 plus VAT. Can't see a K20D being any cheaper.
Posted by Mike-P on 19/09/2011 - 14:04
K20D sensor problem
Found the thread I was thinking of . The OP's images have gone but there is close up of the 'bright spot' part way down the thread. Im impressed .. that was nearly 3 years ago. I have a hard job remembering last week these days.
Posted by Mike-P on 19/09/2011 - 14:06
K20D sensor problem
Looks like I am done then. I better go and practice cloning in photoshop.
Posted by Pietrach on 19/09/2011 - 14:11
K20D sensor problem
Found the thread I was thinking of . The OP's images have gone but there is close up of the 'bright spot' part way down the thread. Im impressed .. that was nearly 3 years ago. I have a hard job remembering last week these days. Most of the time for me too Mike. I was sure I'd seen something ...
Posted by Mannesty on 19/09/2011 - 14:43
