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ISO 3200. DA 40mm, K20D, Useable?
Lens: DA 40mm f/2.8 Camera: Pentax ISO: 3200 Shutter Speed: 1/8s Aperture: F2.8 
Posted By: skyoftexas, 06-10-2010, 06:06 PM

Here are some pics I took at a restaurant in low light. Banding is visible, and I did some aggressive, selective sharpening on the eyes & mouth (maybe too much?). Interestingly enough, I had to soften the skin (female model). I'm still not sure how I feel about them. Feel free you express your honest opinions. Thanks.

Michael

All pics taken with K20D. at 3200 ISO, f/2.8, and either 1/8 or 1/10 shutter speed.








Last edited by skyoftexas; 06-12-2010 at 04:11 PM.
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06-10-2010, 07:25 PM   #2
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Three options as I see it. Try Neat Image or Noise Ninja or the noise removal program of your choice. Or, convert to B&W (I'm thinking your best bet). Or just stick with what you got. It's not great, but it's not that bad.
06-10-2010, 08:06 PM   #3
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QuoteOriginally posted by Jodokast96 Quote
Three options as I see it. Try Neat Image or Noise Ninja or the noise removal program of your choice. Or, convert to B&W (I'm thinking your best bet). Or just stick with what you got. It's not great, but it's not that bad.
Did Neat Image, so that leaves option 2 & 3.
06-10-2010, 08:06 PM   #4
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Not bad - far better than the couple of times I tried ISO 3200 with my K20D (can't remember the lens, but it could have been my DA 40) before I gave up on that sensitivity. NR should help, I'd think.

Nice job, in my view.

Jer

06-10-2010, 08:40 PM   #5
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Good job on those!... assuming you shot RAW and nailed your exposure, then you have no reason to expect anything but full size prints with these.

Things that will get you there:
Tinge removal: GordonB's magenta cast removal tool(see upper right hand magenta cast).
Demosaic : ACR6.x or LR3 - for nothing but color noise removal(all else 0).
Debanding: Niksoft Define for Photoshop is an amazing tool.
NR: Topaz Denoise 4. There simply is no other...

A little masking here and there and you should be looking at full size images(1:1) that look every bit as good as ISO800 ones.

Hope this helps.
06-11-2010, 01:23 AM   #6
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I think you need to define "usable". What do you intend to use them for?
Depending on that I have no problems with them in a general sense, although I much prefer the ones I perceive to be sharper. My favourite is the shot with the wine glass. The colours are not fantastic IMO so I would also consider a B&W conversion.
06-11-2010, 06:35 AM   #7
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If you shot these as RAW I really suggest you run them through the magenta tinge corrector. It will make a world of difference

http://forums.dpreview.com/forums/read.asp?forum=1036&message=32904790
06-11-2010, 11:13 AM   #8
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QuoteOriginally posted by nirudha Quote
If you shot these as RAW I really suggest you run them through the magenta tinge corrector.
Second.

06-11-2010, 01:49 PM   #9
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I've gotten reasonable results at ISO 3200, even at 100%, by ensuring to expose to the right as much as possible - definitely not underexposing. Shadow details are always going to be troublesome at that ISO, so these aren't so bad but the banding is definitely obvious and the grain noticeable - these won't be good at 100%.
06-12-2010, 04:01 PM   #10
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QuoteOriginally posted by JohnBee Quote
Debanding: Niksoft Define for Photoshop is an amazing tool.
I'm unable to find a url to Niksoft Define, any pointer? Thanks.
06-12-2010, 04:08 PM   #11
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QuoteOriginally posted by song_hm Quote
I'm unable to find a url to Niksoft Define, any pointer? Thanks.
My bad, it's actually Nik Software(to be exact), I keep calling it Niksoft for some reason or another

Photographic Noise Reduction
06-12-2010, 04:14 PM   #12
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A quick redo with lowered saturation:





06-12-2010, 05:14 PM   #13
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QuoteOriginally posted by skyoftexas Quote
A quick redo with lowered saturation:
Improved!
Looks much more lifelike imo.
What about that banding? Have you considered trying your hand at it as well?

Last edited by JohnBee; 06-12-2010 at 06:57 PM.
06-15-2010, 09:54 PM   #14
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QuoteOriginally posted by JohnBee Quote
My bad, it's actually Nik Software(to be exact), I keep calling it Niksoft for some reason or another

Photographic Noise Reduction
Thanks.
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