Search results for 'sensor cleaning' - page 376
Help! Sensor cleaning made it worse.
I had exactly the same with my K5 the first time I cleaned it with my arctic butterfly. I think there must be some initial coating over the sensor. A clean with a cleaning swab cleaned it. that's really interesting. some people have noticed k-5 stains developing with time. perhaps some of this initi...
Posted by gillbod on 03/04/2011 - 14:02
Help! Sensor cleaning made it worse.
that's really interesting. some people have noticed k-5 stains developing with time. perhaps some of this initial coating you had wiped off might explain it. the coating might sneak in under the AA filter, then cause the stains? I doubt it to be the case. If coating sip between AA and sensor, it sho...
Posted by testdasi on 03/04/2011 - 17:05
K5 - decent price, anyone used UK digital
Just looking around the web as K5 prices have crept up again at SRS etc and came across the K5 here for £929 with 5yrs warranty (provided by company not manufacturer though). I've no idea if the company are reputable etc? Simon be careful with dirt cheap K-5. It may be old stock with sensor s...
Posted by testdasi on 05/04/2011 - 07:24
I was begining to doubt the K-5
I doubt they would make a (D)FA version of the 50 f/1.2, the current AF module would struggle too much I think. They do however still sell new A series versions on the Japanese market :D, would make a nice bundle. Because digital sensors only see about f/1.8 regardless of how wide the lens is, they ...
Posted by robbiec on 06/04/2011 - 10:30
I was begining to doubt the K-5
Because digital sensors only see about f/1.8 regardless of how wide the lens is I have seen similar claims before, but no satisfactory proof that such a phenomenon exists. If we let more light in, how can a sensor or film not see it?
Posted by johnriley on 06/04/2011 - 10:32
I was begining to doubt the K-5
Because digital sensors only see about f/1.8 regardless of how wide the lens is I have seen similar claims before, but no satisfactory proof that such a phenomenon exists. If we let more light in, how can a sensor or film not see it? It was quite well covered by a thread on here a few months back. S...
Posted by Algernon on 06/04/2011 - 10:36
I was begining to doubt the K-5
Because digital sensors only see about f/1.8 regardless of how wide the lens is I have seen similar claims before, but no satisfactory proof that such a phenomenon exists. If we let more light in, how can a sensor or film not see it? I think the theory is that as the aperture opens, the light is les...
Posted by Pentaxophile on 06/04/2011 - 10:57
I was begining to doubt the K-5
Because digital sensors only see about f/1.8 regardless of how wide the lens is I have seen similar claims before, but no satisfactory proof that such a phenomenon exists. If we let more light in, how can a sensor or film not see it? It was quite well covered by a thread on here a few months back. S...
Posted by robbiec on 06/04/2011 - 11:00
I was begining to doubt the K-5
They couldn't do that! The picture would just (if the theory is correct) be a tad underexposed. Even if that's true, that would cause vignetting, whgich is a different thing altogether. Film can be seen as a monolithic light receptor, whereas a sensor is more like a compound eye, which explains t...
Posted by Pentaxophile on 06/04/2011 - 11:15
I was begining to doubt the K-5
Can you give me the test process please so I can try it myself? I wonder how a manufacturer programs the output of a sensor if it does not have any aperture info to work from when using an all manual lens such a K series? Just repeat the test in . It's very simple. Constant shutter speed, just clos...
Posted by Algernon on 06/04/2011 - 11:17
K10 beats K7, at least on some points..
As the old saying goes; there are lies, damned lies and statistics. The image quality is almost certainly measured at base ISO, where you would generally expect a CCD sensor to be superior to CMOS. At higher ISO ratings the CMOS sensor will come into its own. Ditto dynamic range. The viewfi...
Posted by hefty1 on 05/04/2011 - 23:26
K10 beats K7, at least on some points..
Go to Imaging Resource and check their maximum recomended print sizes for each camera, and the iso samples. Forget silly comparisons like that one! God knows what they based '10 percent better image quality' on. For me the k-7 wins except at base iso where the differences are negligible at a 1:1 vi...
Posted by Smeggypants on 06/04/2011 - 01:19
ME Viewfinder Cap (K10D)
It's simple enough for you to check. Light spilling through the viewfinder can affect exposures and light leak can get to the sensor with long exposures. Try it and see. There has to be a reason that the viewfinder cap has always been provided with SLR cameras with built in metering.
Posted by johnriley on 07/04/2011 - 09:10
ME Viewfinder Cap (K10D)
Over in the IR thread there is plenty of evidence that the eyepiece stray light can mess up a picture. In that case the reason is the ten-stop difference between the ambient light and the light that comes in through the lens/filter, enough for the tiny amount of light that gets round the mirror...
Posted by karma mechanic on 07/04/2011 - 10:03
Battery depletion
Hi. Tried experimenting with battery types. My Pentax camera appears to be the first device I have encountered that doesn't get on with Alkaline AA batteries. Presumably the chemistry triggers the wrong response in the camera's sensor. The standard NmH rechargeable AAs appear to work for a sh...
Posted by zeroastigmatism on 10/04/2011 - 13:24
Dirty sensor on my K7. Help!
Hey there, I was out in the beautiful weather today and took along my camera on a walk. I've had dust spots on the sensor before but they have largely been removed with a few uses of the removal tool on board. However, having used the camera today images that include sky have been absolutely covered...
Posted by AlexFord on 10/04/2011 - 18:44
Dirty sensor on my K7. Help!
I've always set my K20 to use dust removal on start up and have never hac had any dust on my sensor in 15 months of professional use. I think a wet clean is in order.
Posted by gartmore on 10/04/2011 - 18:48
Dirty sensor on my K7. Help!
I've always set my K20 to use dust removal on start up and have never hac had any dust on my sensor in 15 months of professional use. I think a wet clean is in order. Yeah, I have dust removal set for start up. I'm worried these may actually be stuck in one position as I repeated the removal sev...
Posted by AlexFord on 10/04/2011 - 18:52
Dirty sensor on my K7. Help!
I have the same thing crop up regularly on my K-7 too although mine are only visible at extreme close up and appear as small round dots surrounded by a halo of white, I'm starting to contemplate sending it to Pentax for a service. But for now I use from SRS
Posted by SteveEveritt on 10/04/2011 - 19:02
Dirty sensor on my K7. Help!
Wet cleaning is easy. enable mirror lock up and just drop some fluid onto the swab and wipe across the sensor a couple of times. The fluid will evaporate and bob's your uncle. Some airborne particles are greasy and won't shake off the sensor so wet cleaning is the only way. There won't be any dam...
Posted by Smeggypants on 10/04/2011 - 22:59
