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11-06-2010, 02:43 PM   #1
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K5 Low ISO Noise ----- Not!



I was outside taking photos for the SIN game and some of my photos came out a little underexposed (entirely my fault, not the camera). Normally, I'd consider this shot junk and send it to the scrap bin. However,

Camera Pentax K-5
Exposure 0.002 sec (1/640)
Aperture f/5.6
Focal Length 85 mm
ISO Speed 80
Exposure Bias 0 EV
Flash Off, Did not fire



This is pushed 3 stops and has had the fill light boosted to about 75% in ACR... Go ahead and click the fixed picture to pixel peep if you wish.. There Is a slight amount of NR applied in ACR but normally something like this would be unserviceable.

Pretty impressive... To me anyway.



11-06-2010, 02:48 PM   #2
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Looks like that's the impressive dynamic range at work right there! Stunning clarity in both!

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11-06-2010, 03:12 PM   #3
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Yeah, I've thought twice now before ditching shots that look like severely under-exposed throw aways when shooting the K5.
11-06-2010, 03:15 PM   #4
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QuoteOriginally posted by JeffJS Quote
Pretty impressive... To me anyway.
Impressive indeed. Looks like there will be no need for graduated ND filters for landscape photography at the base ISO: just expose for the sun and push the remaining black areas to beautiful landscapes.....

11-06-2010, 03:18 PM   #5
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Yeah, no graduated filters... and no tripod as well. Photograhy is changing...
11-06-2010, 03:36 PM   #6
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QuoteOriginally posted by elho_cid Quote
Photograhy is changing...
Yeah, I imagine a lot of people who may be new to photography will pick up the K-5 now and not have to worry as much about learning proper exposure and technique, because they will be aware that they have so much latitude in PP with the K-5. It's going to be a very accommodating camera indeed to a wide range of users.
11-06-2010, 03:44 PM   #7
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QuoteOriginally posted by Adam Quote
Looks like that's the impressive dynamic range at work right there! Stunning clarity in both!
I have been saying all along that the K-5's DR is more impressive than its high ISO noise levels. This photo (and the DxO Mark measurements of DR) only confirm that fact. It is nice to be able to shoot in low light but even nicer to retain shadow detail like this in any light. Well done. Can't wait for Capture One to support the K-5.

Rob
11-06-2010, 03:49 PM   #8
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QuoteOriginally posted by Ivan Glisin Quote
Impressive indeed. Looks like there will be no need for graduated ND filters for landscape photography at the base ISO: just expose for the sun and push the remaining black areas to beautiful landscapes.....
Also much less need for HDR. I'm not saying that it will become completely superfluous, just unnecessary for many high contrast photos.

Rob

11-06-2010, 03:51 PM   #9
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QuoteOriginally posted by JeffJS Quote
This is pushed 3 stops and has had the fill light boosted to about 75% in ACR... Go ahead and click the fixed picture to pixel peep if you wish.. There Is a slight amount of NR applied in ACR but normally something like this would be unserviceable.
sorry for being such a novice but i dont understand what you did here...
is the two images really the same shot?... what kind of software?
11-06-2010, 04:09 PM - 1 Like   #10
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QuoteOriginally posted by teedee Quote
sorry for being such a novice but i dont understand what you did here...
is the two images really the same shot?... what kind of software?
If I understand it right, the second, bright/clear shot is the after. ACR is a component of photoshop that handles RAW files, and with this particular file, he boosted the exposure by 3 stops as well as cranking up the fill light - something that with many/most cameras would yield an unusable/extremely noisy image. What's impressive about this is the K-5's produced a file that can be pushed with such extreme settings and is still clean.
11-06-2010, 04:18 PM   #11
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Yeah, I've given my K5 its first run today, and I'm impressed with the results.

It's really not that far from what I'm used to with negative film, where dynamic range is huge.
I really feel that DSLRs have reached at last a satisfying level, after two years of K10, K20, K7 and Kx...
11-06-2010, 04:38 PM   #12
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QuoteOriginally posted by jaieger Quote
If I understand it right, the second, bright/clear shot is the after. ACR is a component of photoshop that handles RAW files, and with this particular file, he boosted the exposure by 3 stops as well as cranking up the fill light - something that with many/most cameras would yield an unusable/extremely noisy image. What's impressive about this is the K-5's produced a file that can be pushed with such extreme settings and is still clean.
You understand perfectly. That's exactly the case.


3600

Last edited by JeffJS; 11-06-2010 at 06:00 PM.
11-06-2010, 04:52 PM   #13
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Great Shot. In my laptop's screen, it looks like it been HDR'D ('D Pastence).
It means K-5 really has a good dynamic range.
11-06-2010, 04:54 PM   #14
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Amazing.

There is no way I could do this with my K10D, not in a million years.
There would be major amounts of magenta discoloration in the formerly-dark areas and the noise would be off the scale.
11-06-2010, 04:55 PM   #15
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now i understand too... thank you!
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