is this sensor stain?
Posted 20/02/2011 - 19:57
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You won't see the stains at f5.6. You will need to be shooting at at least f11 or more. To test for it set for a 1 sec exposure at f16 and point the camera at a white wall ... the stain should be obvious if it's there. I'd guess that is dust you see on yours - blow your sensor !
Really nice shot by the way !
Really nice shot by the way !
http://frogfish.smugmug.com/ Pentax. Pentax DA*300/4, Cosina 55/1.2, Lens Baby Composer Pro & Edge 80, AFA x1.7, Metz 50 af1.
Nikon. D800. D600. Sigma 500/4.5, Nikon 300/2.8 VRII, Sigma 120-300/2.8, Zeiss Distagon ZF2 21/2.8, Zeiss Distagon ZF2 35/2.0, Sigma 50/1.4, Nikkor 85/1.8, Nikon TC20EIII, Nikon TC14EII, Kenko x1.4, Sigma 2.0
Nikon. D800. D600. Sigma 500/4.5, Nikon 300/2.8 VRII, Sigma 120-300/2.8, Zeiss Distagon ZF2 21/2.8, Zeiss Distagon ZF2 35/2.0, Sigma 50/1.4, Nikkor 85/1.8, Nikon TC20EIII, Nikon TC14EII, Kenko x1.4, Sigma 2.0
Posted 20/02/2011 - 19:59
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i didnt expect to see dust at 5.6?
regards
Roy
Pentax K3 gripped,and some lenses
https://www.flickr.com/photos/pentaxroy/
my pbase gallery
Roy
Pentax K3 gripped,and some lenses
https://www.flickr.com/photos/pentaxroy/
my pbase gallery
Posted 20/02/2011 - 20:06
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I've seen dust at F4 .
Do a proper test on it. Clean the sensor, then do as Frogfish says.
Do a proper test on it. Clean the sensor, then do as Frogfish says.
Posted 20/02/2011 - 20:08
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thanks for the replies..will do as the camera is one of the later serial number ones so hopefully should be o.k
regards
Roy
Pentax K3 gripped,and some lenses
https://www.flickr.com/photos/pentaxroy/
my pbase gallery
Roy
Pentax K3 gripped,and some lenses
https://www.flickr.com/photos/pentaxroy/
my pbase gallery
Posted 20/02/2011 - 20:39
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o.k cleaned sensor with my arctic visible dust sensor cleaner
still marks and look even more like sensor staining to me
have also just done a dust alert test via the camera where it shows a white screen so you can see dust specks and there aren't any so does this mean it is definitely sensor staining:
still marks and look even more like sensor staining to me
have also just done a dust alert test via the camera where it shows a white screen so you can see dust specks and there aren't any so does this mean it is definitely sensor staining:
regards
Roy
Pentax K3 gripped,and some lenses
https://www.flickr.com/photos/pentaxroy/
my pbase gallery
Roy
Pentax K3 gripped,and some lenses
https://www.flickr.com/photos/pentaxroy/
my pbase gallery
Posted 20/02/2011 - 21:03
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The dreaded stains methinks!
K20D...ist DS ,DA18/55,DA16/45.DA* 50/135,"A"1.7 50MM..."A" 70/210..M 50mm f2...Tamron 90mm macro,28/300 Tamron,200/500 Tamron 6.9....A Pentax DA*300... Sigma10/20,FA31mm 1.8 Ltd*********,FA 77mm Ltd!
Posted 20/02/2011 - 21:11
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Looks too big to be sensor stains IMHO.
I'm not surprised to see it at f5.6. I regularly notice dust at f2.8, more so with WA lenses though.
It looks like dust to me.
I'm not surprised to see it at f5.6. I regularly notice dust at f2.8, more so with WA lenses though.
It looks like dust to me.
Posted 20/02/2011 - 21:34
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Quote:
Looks like it to me .. whats the serial number?
i am afraid it starts with a 39 and had the 0 on the boxLooks like it to me .. whats the serial number?
bought from srs
i will purchase a wet sensor cleaner and try that before contacting chris though as i used my arctic buttery to clean it (usually works)
regards
Roy
Pentax K3 gripped,and some lenses
https://www.flickr.com/photos/pentaxroy/
my pbase gallery
Roy
Pentax K3 gripped,and some lenses
https://www.flickr.com/photos/pentaxroy/
my pbase gallery
Posted 20/02/2011 - 21:44
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looks like the k5 sensor problem, i have seen dust at f2.8
Posted 20/02/2011 - 21:46
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regards
Roy
Pentax K3 gripped,and some lenses
https://www.flickr.com/photos/pentaxroy/
my pbase gallery
Roy
Pentax K3 gripped,and some lenses
https://www.flickr.com/photos/pentaxroy/
my pbase gallery
Posted 20/02/2011 - 21:57
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You want the type 2 Eclipse wet cleaner.
I really wouldn't bother though .. if it was me I would just return it.
I'm sure if it's just dust (don't think for one moment it is) then Chris will just give it a clean himself.
Bit worrying it's one of the supposedly checked ones though.
I really wouldn't bother though .. if it was me I would just return it.
I'm sure if it's just dust (don't think for one moment it is) then Chris will just give it a clean himself.
Bit worrying it's one of the supposedly checked ones though.
Posted 20/02/2011 - 22:10
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I agree with Mike!....it's not worth the hassle or expence of cleaning it yourself!.....on the bottom stain I can see 6 spots!...thats not dust!
K20D...ist DS ,DA18/55,DA16/45.DA* 50/135,"A"1.7 50MM..."A" 70/210..M 50mm f2...Tamron 90mm macro,28/300 Tamron,200/500 Tamron 6.9....A Pentax DA*300... Sigma10/20,FA31mm 1.8 Ltd*********,FA 77mm Ltd!
Posted 20/02/2011 - 22:19
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o.k have sent Chris a p.m
regards
Roy
Pentax K3 gripped,and some lenses
https://www.flickr.com/photos/pentaxroy/
my pbase gallery
Roy
Pentax K3 gripped,and some lenses
https://www.flickr.com/photos/pentaxroy/
my pbase gallery
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1072 posts
18 years
Newport,
South Wales,U.k
Just uploaded the image below onto my gallery taken with the 55-300 and 1.4 convertor,but then i noticed marks which i first thought were dust bunnies on the middle lhs (and only f5.6) but am afraid they resemble those sensor stains..what do fellow members think
Roy
Pentax K3 gripped,and some lenses
https://www.flickr.com/photos/pentaxroy/
my pbase gallery