Search results for 'sensor cleaning' - page 574
cleaning an AF sigma 400mm F5.6
Has anyone stripped a sigma 400mm F5.6 AF lens for cleaning? Or has anyone a service or split parts diagram for one? I have taken telescopes apart before but never anything with AF and dont want to make mistakes, especially with the collimation of the main lens elements.
Posted by iancandler on 07/11/2007 - 13:32
cleaning an AF sigma 400mm F5.6
Has anyone stripped a sigma 400mm F5.6 AF lens for cleaning? might be worth contacting. He fixed the iris assembly on one I had.
Posted by ChrisA on 07/11/2007 - 14:16
cleaning an AF sigma 400mm F5.6
Cheers Chris.. I'll give him a ring
Posted by iancandler on 07/11/2007 - 22:05
K10D focus
Found similar issues a while back. I had uploaded a pic of the sensor arrangement on my camera. I was a tad surprised at the size and arrangement of the sensors. It turned out that the center of focusing sensors on my K10D is not exactly in the center of the focus screen. I now focus at the l...
Posted by amoringello on 21/11/2007 - 03:36
K10D focus
Right, I've read through this thread a few times - I'm being thick and missing something! What actually is causing the problem? I can see that the camera is focusing behind where you want but is this a lens problem or a sensor alignment problem or what? My paranoia knows no bounds so I've downloade...
Posted by gartmore on 21/11/2007 - 17:51
CS2 self inflicted problem!
Have you tried cleaning the registry of non-connected entries? A well-respected program is "ccleaner" from http://www.ccleaner.com/ It is free and if you can easily and efficiently clean the registry and it also safely performs other operations.
Posted by Steve O on 24/11/2007 - 14:21
K10D Spot on some images. Help Please.
Help Please. I shot around 100 images today and during processing noticed a pretty large spot almost in the center of some images. Was shooting for our Fire Dep't in temp of around 28-30F for about 2 hours using various apertures, which I know can affect how much a dust spot shows up, or maybe n...
Posted by hotshots4u2c on 10/12/2007 - 05:59
K10D Spot on some images. Help Please.
Using a small aperture, if you take an image of a blank wall or even blue sky then any dust spots will show up. The SR system can be used, several times probably, followed by rocket blower and finally as a last resort by physical cleaning. I would use the Pentax kit (no surprise there0 but if ...
Posted by johnriley on 10/12/2007 - 07:51
K10D Spot on some images. Help Please.
I have tried a bulb blower. There are bulb blowers, and bulb blowers. The wussy ones are probably no use at all, and even with the that I use, I find I have to get the nozzle right in there - so it's fully charged battery, mirror up, and a careful braced holding position, so that nothing moves ...
Posted by ChrisA on 10/12/2007 - 09:39
K10D Spot on some images. Help Please.
There was a K10 listed on E-Bay last week which stated it had a spot in the middle of its images. The seller said it was a scratch on the sensor so be careful if you are going to be digging around in there :!: :!: Does anyone know if a scratched sensor is repairable, is the coating over the se...
Posted by Clarky on 10/12/2007 - 09:55
K10D Spot on some images. Help Please.
so be careful if you are going to be digging around in there :!: :!: Yes, absolutely. I guess I get the nozzle to within about 1cm of the sensor, so a bit further in than the mirror. That's about as close as I dare go, and I haven't needed to go any closer. Does anyone know if a scratched ...
Posted by ChrisA on 10/12/2007 - 10:37
K10D Spot on some images. Help Please.
One time when I was using my Rocket Blower on my *istD I got a bit carried away and bashed the nozzle against the sensor. :shock: Twice. :shock: :shock: It suffered no damage whatsoever. :roll: I wouldn't recommend doing it, but I suspect sensors are a little more sturdy than popularly bel...
Posted by Daniel Bridge on 10/12/2007 - 12:19
K10D Spot on some images. Help Please.
It's in a consistent position and looks like some debris on the sensor.
Posted by johnriley on 10/12/2007 - 17:46
K10D Spot on some images. Help Please.
John, Thanks. I locked the mirror up once again, held the camera under a bright lamp and gave it three good blasts with a Rocket Blower right above the sensor. You would not believe the big chunk of debris that flew out of there. Certainly big enough to see in the palm of ones hand (If I could...
Posted by hotshots4u2c on 10/12/2007 - 18:18
K10D Spot on some images. Help Please.
I never ever put a lens on without using my blower first ....I am beginning to wonder if it was floating around in the body from new. Or in the blower, if you use it every time you change lenses. Maybe the plastic is breaking up inside. Or maybe it's a chunk of grit from all the burning. Doin...
Posted by ChrisA on 10/12/2007 - 21:13
K10D Spot on some images. Help Please.
The blower I am using is only two weeks old. I suppose an almost new one might have loose bits too. I don't know - I'm only speculating. You were probably just unlucky. You could be correct in overkill, but it's mostly the end of the lens I use the blower on, don't see where that could cause ...
Posted by ChrisA on 10/12/2007 - 23:01
K10D Spot on some images. Help Please.
Does anyone know if a scratched sensor is repairable, is the coating over the sensor replacable :?: It is most unlikely that the actual sensor was damaged. It's much more likely that if there was in fact any damage, it was to the glass filter in front of the sensor that, amongst other functions, pro...
Posted by Mannesty on 31/10/2008 - 12:50
Viewfinder mucky?
Hello, I have found very noticeable black specks and small grey splodges behind them in my viewfinder. The camera is a DS about 2 1/2 years old. There is no dust showing up on the photos. I have given the insides a blow with a Q ball but the 'dirt' is still there. I took the camera to a local...
Posted by davem on 10/12/2007 - 19:56
Viewfinder mucky?
My daughter is now a pentax convert and the proud owner of the DS and I have moved on to a K10d. Thats good news Dave but on the next Yorkshire meet we'll ALL be carrying K10D's. It'll look like we got a job lot :oops: PS: wasnt it easy cleaning the screen, I discovered how to do it on my IstD ...
Posted by fatspider on 05/04/2008 - 09:07
Clunk in K10
You mean that gentle sound of something moving slightly? Never really noticed it before, but it's probably the sensor that determines which way up the camera is being held. I wouldn't expect the CCD shift to be as large as the movement I have just been listening to.
Posted by johnriley on 28/12/2007 - 10:14
