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06-19-2015, 01:11 PM   #1
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K3 high ISO quality

Is the high ISO noise with the K3 "film like" as in a pleasant grain?
Similar grain patterns as the K5iis?

Thanks

Randy

06-19-2015, 01:20 PM   #2
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QuoteOriginally posted by slip Quote
Is the high ISO noise with the K3 "film like" as in a pleasant grain?
Similar grain patterns as the K5iis?

Thanks

Randy
I'd say its even smaller than the K-5 noise because the pixels are smaller (more dense). However, at a pixel level, there appears to be more noise. When downsized to the same 16megapixels as the K-5, it look as good or better.
06-19-2015, 01:57 PM   #3
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QuoteOriginally posted by slip Quote
Is the high ISO noise with the K3 "film like" as in a pleasant grain?
No, it is digital-like with both chroma and luminance components. Digital noise happens on a per-pixel basis (yes, always the same size and in a grid), while film grain is based on aggregates of silver crystals and/or dye clouds (size and distribution are highly unpredictable).

That being said, the general appearance of noise on the K-3 is not particularly unpleasant and is easily managed in tools like Lightroom.


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06-19-2015, 02:09 PM   #4
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I think the K3 looks OK in high iso situations. This one is shot at iso 6400.



06-19-2015, 02:28 PM   #5
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The k-3's noise is acceptable when viewing the full image, at 3200 (6400 in b&w). I prefer to keep it at 1600 or lower though. (I wouldn't dare go above 1600 on my original k-5, preferring to 800 or less).

The k-s1 though, the high ISO noise seems much more palatable to the k-3 to my eyes. Purely from a noise perspective, I prefer the look of the noise from the k-s1 sensor over the k-3. If I'm at ISO 6400, I'd rather have the k-s1 myself, but it only really makes a difference when I'm pixel peeping.

I can understand why people don't like the k-3 at high ISO, the noise is a bit weird and mechanical when viewed up close, which can lead to slightly more time fiddling with the noise reduction in LR. But it the grand scheme of things, it's not bad, and certainly it's a massive improvement over my original k-5.

Sadly I've not had the opportunity to play with the k-5iis, so I'm sure others will be able to give better input. For me though, I'd rather have the k-3 over the original k-5, or the k-s1 (the k-s1 would be my second choice). The quality of images at lower Isos is mind boggling, and the quality at higher Isos is more than good enough.
06-19-2015, 04:30 PM   #6
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As stevebrot said, there are chroma and luminescence noise elements to consider. The chroma (colour) noise is the most distracting and very un-film-like. That said, in most circumstances colour images are fine up to ISO 800 - after that, images will benefit from some noise reduction in post processing. I've taken many indoor shots at ISO 1600 - 3200 that looked great at 100% with *gentle* chroma and luminescence NR applied. At 50%, images at ISO 6400 can look very good too with some NR. Beyond that, IQ degrades quickly.

If you shoot B&W, you can often get away with no NR right the way up to ISO 6400 depending on the subject and lighting conditions.
06-19-2015, 08:24 PM   #7
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Al, that is noise I can live with! Thanks for the post. I'm sold.
06-19-2015, 08:29 PM   #8
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Just for fun then...

ISO 8000, no NR: https://farm9.staticflickr.com/8579/16065383021_e1d91337e8_o.jpg
Full 24MP shot

06-20-2015, 05:52 AM   #9
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QuoteOriginally posted by Canada_Rockies Quote
Al, that is noise I can live with! Thanks for the post. I'm sold.

For comparison, here's the SOOC jpeg...

Last edited by Al_Kahollick; 09-29-2015 at 07:53 PM.
06-20-2015, 07:55 AM   #10
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QuoteOriginally posted by JinDesu Quote
Just for fun then...

ISO 8000, no NR: https://farm9.staticflickr.com/8579/16065383021_e1d91337e8_o.jpg
Full 24MP shot
I viewed the image at 18x12 inches on my monitor, and was quite pleased with it. That's better noise levels than my K10D at ISO 400. I expanded the image to full size with the magnifying glass, and the noise was there, but evenly distributed, and not particularly disturbing. I'm sold. At ISO 8000 I would not have expected to see the dust on the clock, but it was there, crisp and clear at 18x12.
06-20-2015, 08:04 AM   #11
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QuoteOriginally posted by Canada_Rockies Quote
I viewed the image at 18x12 inches on my monitor, and was quite pleased with it. That's better noise levels than my K10D at ISO 400. I expanded the image to full size with the magnifying glass, and the noise was there, but evenly distributed, and not particularly disturbing. I'm sold. At ISO 8000 I would not have expected to see the dust on the clock, but it was there, crisp and clear at 18x12.
Yep - I was surprised to see the dust clearly as well. Without NR, it keeps a lot of detail and the noise isn't particularly ugly to me, so I go lighter with the noise reduction now that I have the k-3. It scales down well too - when I reduce the image to 4 or 6 MP, it looks pretty clean when I post to facebook and such.
06-22-2015, 11:09 AM   #12
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As a concert photographer, I routinely shoot at high ISO with my K3. I love the way it performs.

ISO 4000

Volbeat
by John Rudolph, on Flickr
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