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07-27-2010, 07:04 PM   #661
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Name:  high iso.jpg
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Both are at 6400 ISO, shot with the Pentax K-x. Only resized, nothing done to them.

07-27-2010, 09:52 PM   #662
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Here are a few snaps taken while we were on tour in an underground mine. We had no choice but to shoot with ambient lighting as the tour guide strictly forbid the use of flash photography during the tour(to dangerous). Which was sort of funny because when I found out(in briefing) I was like "Oh good a challenge toward my wife.. as I started talking about what kit to use, but then I noticed others in our group who were pretty grim about the idea(lots of Nikon shooters along with us).

So when the tour started, I took my white balance shots(with WB caps) and got ready. And noticed a few other DSLR owners taking a few shots and making comments or expressions like "pffft this is useless...", so it would definitely prove to be interesting shooting conditions.

Having said that, we equipped our low-light K20(w/Katzeye) with a 50mm 1.4 lens and pressed on. Which worked surprisingly well in fact, as my wife and I switched camera's(she had a Kx) mid-point so she could take a few of her own as her kx wouldn't lock of focus with the lens she had and the viewfinder to dark to try and focus manually.

So all in all, I'd say the setup worked quite well and we were able to get away with quite a few decent shots.

K20D, ISO3200, 1/100, SMC-A 50 f/1.4

click image for actual size

This time deeper in the mine, we had to fall back to ISO6400 to cope with the even darker surroundings. In this case, things couldn't get worst. The shutter speed was very low and exposures were leaning heavily to the left.
But! thanks to our trusty K20D, we managed to pull through. I guess we could say, "The ol' K20 held its own!" against those Canon and Nikon shooters who never even bothered to take a shot

K20D, ISO6400, 1/15, SMC-A 50 f/1.4

click image for actual size - Note this is not a real man, but in fact a painted facade

~ The end

Last edited by JohnBee; 07-28-2010 at 12:52 AM.
07-30-2010, 08:08 PM   #663
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I use the KX for shows and it competes well against much more expensive cameras. Love it...actually all of the Pentax model do well based on this thread.

ISO 4000
The Melvins on Flickr - Photo Sharing!

ISO 1600
The Melvins on Flickr - Photo Sharing!

The K200D works great too
ISO1600
http://www.flickr.com/photos/johnrudolph/4357599635/in/set-72157623436916516/
http://www.flickr.com/photos/johnrudolph/4358346638/in/set-72157623436916516/

Last edited by john5100; 07-30-2010 at 08:14 PM.
07-30-2010, 08:33 PM   #664
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QuoteOriginally posted by john5100 Quote
I use the KX for shows and it competes well against much more expensive cameras.
I love the Kx actually, it amazes me to think that if someone was contemplating the best high ISO performers on the market, that they'd be looking at a FF professional camera and an entry level Pentax
The guys at corporate must be having a field day with that one!

Excellent samples btw!
Thanks for sharing


Last edited by JohnBee; 07-30-2010 at 08:57 PM.
07-30-2010, 11:53 PM   #665
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QuoteOriginally posted by john5100 Quote
I use the KX for shows and it competes well against much more expensive cameras. Love it...actually all of the Pentax model do well based on this thread.

ISO 4000
The Melvins on Flickr - Photo Sharing!

ISO 1600
The Melvins on Flickr - Photo Sharing!
Pretty. Damn. Clean.
08-01-2010, 11:00 PM   #666
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Another K20D/ISO6400 low low... light shot used to test the new Topaz Denoise 5 NR engine.

This file had all the usual issues(cast and banding), but ACR6 and TD5 did a good job of managing that. I was also able to pull an extra stop of shadow detail thanks to Denoise's superior NR.
I probably could have taken my time and done some portrait retouching on the image, but I'm far to lazy, and it was just a test image anyways.

K20D, ISO6400, 1/60s, f/4, 28mm, +eV push

Depending on your browser size, you may have to right click the image to view fill size.

~The end

Last edited by JohnBee; 08-02-2010 at 01:50 AM.
08-02-2010, 12:29 AM   #667
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Bush baby in Uganda



K-7 & DA* 60-250mm
ISO 6400
1/13 sec
f 4.0
153mm (manual focus)
NR: Lightroom 3 at 50
08-02-2010, 01:45 AM   #668
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The high ISO performance is always the most complain topic.
This thread is great! show us what can Pentax high ISO do. Not bad, better-than-expected.

08-02-2010, 03:39 AM   #669
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QuoteOriginally posted by lance Quote
The high ISO performance is always the most complain topic.
And with good reason, comet Holmes 17-nov-2007, K10D ISO 400 30sec with noise reduction (+ 30sec dark frame substraction):



That was one of the last attempts I made using Pentax DSLR for astrophotography.
And the K20D is even worse, random hot pixels...
08-02-2010, 07:27 AM   #670
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QuoteOriginally posted by JohnBee Quote
Another K20D/ISO6400 low low... light shot used to test the new Topaz Denoise 5 NR engine.

This file had all the usual issues(cast and banding), but ACR6 and TD5 did a good job of managing that. I was also able to pull an extra stop of shadow detail thanks to Denoise's superior NR.
I probably could have taken my time and done some portrait retouching on the image, but I'm far to lazy, and it was just a test image anyways.

K20D, ISO6400, 1/60s, f/4, 28mm, +eV push

Depending on your browser size, you may have to right click the image to view fill size.

~The end
Nice job. I just bought Topaz denoise 4.1 and now you are saying there is a 5.0?
08-02-2010, 09:34 AM   #671
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QuoteQuote:
JohnBee: Another K20D/ISO6400 low low... light shot used to test the new Topaz Denoise 5 NR engine.

This file had all the usual issues(cast and banding), but ACR6 and TD5 did a good job of managing that. I was also able to pull an extra stop of shadow detail thanks to Denoise's superior NR.
I probably could have taken my time and done some portrait retouching on the image, but I'm far to lazy, and it was just a test image anyways.
Super shot & not just because it shows off what can be done @ high ISO. The lighting is great--the shot is a keeper!
08-02-2010, 10:38 AM   #672
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QuoteOriginally posted by jgredline Quote
Nice job. I just bought Topaz denoise 4.1 and now you are saying there is a 5.0?
Yes, v5 it is.
Luckilly, upgrades are free with Topaz products.
08-02-2010, 10:47 AM   #673
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QuoteOriginally posted by glasbak Quote
And with good reason...That was one of the last attempts I made using Pentax DSLR for astrophotography. And the K20D is even worse, random hot pixels...
I think the wagon has moved on considerably since then...:
https://www.pentaxforums.com/forums/pentax-dslr-discussion/77684-k-x-king-lon...trophotography
and other threads.
08-02-2010, 10:59 AM   #674
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QuoteOriginally posted by JohnBee Quote
Yes, v5 it is.
Luckilly, upgrades are free with Topaz products.
This is cool. Do you have a beta version? I just checked their site and they still show 4.0
08-02-2010, 07:29 PM   #675
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QuoteOriginally posted by jgredline Quote
This is cool. Do you have a beta version? I just checked their site and they still show 4.0
It was beta, now it's official.
The product section still advertises it as v4, but when you download the trial it will default to v5.

Topaz Labs - Downloads
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