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07-19-2009, 09:59 AM   #1
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K20D viewfinder not clear?

Hi,

Maybe it is a silly question.

I just received my first DSLR - K20D, after few days play it around I suddenly noticed there seems to be many tiny dots distributed quite evenly over the viewfinder, especially when focusing against bright objects, they are getting more obvious. I am wondering if it is just by the feature of natural-bright-MATTE focusing screen or my viewfinder has problems. I suppose it should be clear like a mirror...

Thanks!
-Jiang

07-19-2009, 11:02 AM   #2
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You are looking at the texture of the focusing screen. It's normal.
07-19-2009, 11:10 AM   #3
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mainly for that reason I don't like pentax viewfinders.
07-19-2009, 11:51 AM   #4
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Virtually all DSLR viewfinders do this. You have to do *something* to cause an image to form - a perfectly clear. In the old days, they used ground glass, but that's too dark to use with your basic slow kit zooms, so most DSLR's are sold with microprism based screens that are much brighter, but in certain types of light you can indeed see the texture.

07-19-2009, 12:40 PM   #5
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Well I compared D40 viewfinder and found it to be much more "cleaner".
07-19-2009, 12:45 PM   #6
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It also depends on the lens - remember you're looking through that as well. Throw a ltd prime on the camera and you'll have little to complain about wrt the viewfinder.
07-19-2009, 11:34 PM   #7
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Thanks a lot guys for your prompt replies! It seems what I see through the viewfinder is quite normal. I am relieved and very happy to make the decision to have K20D among other choices.
07-20-2009, 02:00 PM   #8
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QuoteOriginally posted by kent Quote
Well I compared D40 viewfinder and found it to be much more "cleaner".
Did you compare with the same lens in the same light pointed in the same direction? And did you then try actually focusing manually with both to see how they compare?

07-20-2009, 02:34 PM   #9
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not really. D40 was with sigma 50-150 2.8 but even with kit lens D40's viewfinder looks brighter. Mine has some texture which resembles fingerprint.
07-20-2009, 02:40 PM   #10
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My K10D viewfinder has a small 'S' shaped dark line on the lower left of the frame as you look through. It doesn't show in photos, I think it may be a small crack in the viewfinder glass or something somewhere?
07-20-2009, 04:57 PM   #11
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QuoteOriginally posted by CWyatt Quote
My K10D viewfinder has a small 'S' shaped dark line on the lower left of the frame as you look through. It doesn't show in photos, I think it may be a small crack in the viewfinder glass or something somewhere?
I expect it is dust on the focusing screen.
07-20-2009, 06:34 PM   #12
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QuoteOriginally posted by KungPOW Quote
I expect it is dust on the focusing screen.
Aha! Where and what is the focusing screen?
07-20-2009, 08:50 PM   #13
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The focus screen is where the image forms that you are viewing through viewfinder. A postage-stamp size piece of plastic directly above the mirror, easily visible when you remove a lens. You can can try blowing the underside with a rocket blower, but I wouldn't recommend trying to remove it to remove dust from the other side - just learn to live to live with it, as it is totally normal in any SLR.
07-20-2009, 10:26 PM   #14
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if you don't have dust in your viewfinder, you don't have an SLR.
07-20-2009, 10:48 PM   #15
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QuoteOriginally posted by KungPOW Quote
if you don't have dust in your viewfinder, you don't have an SLR.
Speak for yourself. I have mine hermetically sealed in an environmentally controlled containment vessel and only remove it to shoot pictures of a brick wall and focus chart (both carefully disinfected and sanitized, of course).
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