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04-12-2012, 11:02 AM   #1
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K5 Viewfinder looking a little grainy

Is this normal? There seems to be very, very small dots uniformly distributed all throughout the viewfinder. Does not seem to affect IQ or AF or anything like that. Very different than what you see in the D7000, the other camera I am auditioning.

Just wondering if this is normal.

04-12-2012, 11:15 AM   #2
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This happens with slower lenses (F5.6 or F8)- is that what you're using?

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04-12-2012, 11:55 AM   #3
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same here, happens when I put the 18-55 on I realized it one time but didn't mind it. although I'd be interested in some explanation as to why. I didn't see such thing in slow nikon glasses on a nikon body.

Last edited by Crosshair; 04-12-2012 at 11:56 AM. Reason: addition
04-12-2012, 12:08 PM   #4
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It is the just the ground glass of the focussing screen?

04-12-2012, 12:33 PM   #5
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Yes it is on the 18-55 WR. That is the only lens I have at this point but am expecting a nicer Tamron tomorrow. I too did not see this on the Nikon kit lens.
04-12-2012, 12:34 PM   #6
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QuoteOriginally posted by SpecialK Quote
It is the just the ground glass of the focussing screen?
Not really sure. I tried to clean the lens but its still there. Good news is it does not appear to impact IQ.
04-12-2012, 12:41 PM   #7
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Nothing related to the viewfinder affects the final image. What you are seeing is the surface of the Fresnel lens which is the focusing screen. It is more visible at smaller apertures and virtually invisible at larger ones. Nothing to worry about, it's physics. Reasons why you don't see it on the Nikon could be: it has a faster lens or the diopter adjustment is incorrectly set.
04-12-2012, 02:03 PM   #8
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QuoteOriginally posted by kcobain1992 Quote
Nothing related to the viewfinder affects the final image. What you are seeing is the surface of the Fresnel lens which is the focusing screen. It is more visible at smaller apertures and virtually invisible at larger ones. Nothing to worry about, it's physics. Reasons why you don't see it on the Nikon could be: it has a faster lens or the diopter adjustment is incorrectly set.
The diopter adjustments on both cameras are set correctly so it must be the lens.

I feel much better now knowing that this is not a result of faulty QC or anything like that. Thanks everyone.

04-13-2012, 03:06 AM   #9
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It is the screen that becomes grainy when using a lens with small aperture - as kcobain pointed out. This basically happens for all focusing screens in all cameras. The same will happen with the Nikon camera using small apertures. Get a faster lens and you will see an improvement in the viewfinder.
04-13-2012, 07:29 AM   #10
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QuoteOriginally posted by zapp Quote
It is the screen that becomes grainy when using a lens with small aperture - as kcobain pointed out. This basically happens for all focusing screens in all cameras. The same will happen with the Nikon camera using small apertures. Get a faster lens and you will see an improvement in the viewfinder.
The Nikon D7000 I am auditioning has 18-105 f/3.5-5.6 and its not grainy. But then again, I may not understand what small apertures mean.

Regardless, I'm no longer concerned after reading all the comments here for which I am very thankful.

Any moment now, UPS should be dropping off a Tamron 70-200 f/2.8 which seems like a bigger aperture per my limited understanding. It should look awesome. I will be taking tons of pics this weekend and if things turn out great, the Nikon D7000 may be going back to the store. If not, the K5 will.
04-13-2012, 07:34 AM   #11
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I cannot imagine the combination of the k-5 and the Tamron 70-200 not turning out great. That is an impossibility. You will fall in love with that Tamron on the k-5. I command it so.
04-13-2012, 07:41 AM   #12
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QuoteOriginally posted by JinDesu Quote
I cannot imagine the combination of the k-5 and the Tamron 70-200 not turning out great. That is an impossibility. You will fall in love with that Tamron on the k-5. I command it so.
Nothing is impossible with me my friend. I can screw things up like no one can.
04-13-2012, 03:20 PM   #13
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Tamron came in today and there is absolutely zero graininess but..........holy crap this lens is huge. I'll have to lift weights!
04-13-2012, 05:54 PM   #14
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QuoteOriginally posted by Sage97 Quote
Tamron came in today and there is absolutely zero graininess but..........holy crap this lens is huge. I'll have to lift weights!
A monopod may be your next best friend.
04-15-2012, 12:14 AM   #15
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My friend's K-5 has a more noticeable pattern on the focusing screen when looking through the viewfinder than mine. I have the 18-55 WR and he has the 18-135 WR, but this is at shortest focal length so the apertures are the same (f3.5). It actually looks a lot like fingerprints in his K-5, but it is clearly just the surface pattern of the focusing screen. So it appears there is some variation in focusing screens.
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