Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
04-22-2021, 08:57 AM - 4 Likes   #1
Forum Member
superpowerpinger's Avatar

Join Date: Sep 2014
Location: Singapore
Photos: Gallery
Posts: 83
Albert Siegel tests AF and High ISO for K-III Mark-3

04-22-2021, 09:06 AM   #2
Loyal Site Supporter
Loyal Site Supporter

Join Date: Feb 2009
Location: Ireland
Posts: 1,687
Uhuh, that might get some tongues wagging in a good way
04-22-2021, 09:10 AM   #3
Senior Member
Sprky1285's Avatar

Join Date: Apr 2021
Location: Florida
Posts: 124
Decent review.

I love Dustin Abbott's youtube reviews, but sadly rarely if ever does anything with Pentax. I would love him to! He is uniquely thorough.
04-22-2021, 09:11 AM   #4
Site Supporter
Site Supporter
just_life_photograph's Avatar

Join Date: Jan 2016
Location: Arizona
Photos: Gallery
Posts: 347
very interesting....

04-22-2021, 09:24 AM   #5
Site Supporter
Site Supporter

Join Date: Feb 2010
Location: Salzburg
Photos: Albums
Posts: 1,091
Thanks for this!
04-22-2021, 09:34 AM   #6

Join Date: May 2010
Posts: 7,154
He shows a super mushy ISO 204,800 image and claims it is usable for small prints. No way. Well maybe if you hold it 4 feet out and squint.

The Sony FF high ISO shots retain more details (check the windows edges) than the Pentax to my eyes. But it is relatively close, esp considering the Sony is FF. That said, I probably wouldn't use either at ISO6400 or higher if I had another choice. Way too much noise for me.

This improvement though is more the use of a BSI sensor in the crop body over older, non-BSI sensors previously. That's why it keeps up so well at high ISO. Still it is a pleasant improvement. I think he should have tested it against KP and D500 high ISO though to get a better feel for realistic improvements on the K-3 III (which should be about a stop better).
04-22-2021, 09:35 AM   #7
Custom User Title
Loyal Site Supporter
FozzFoster's Avatar

Join Date: Jan 2016
Location: Alberta
Photos: Albums
Posts: 5,612
I can't wait for this darn camera.

Last edited by Racer X 69; 04-22-2021 at 07:33 PM. Reason: gray area language
04-22-2021, 09:35 AM - 3 Likes   #8
Loyal Site Supporter
Loyal Site Supporter

Join Date: Nov 2015
Photos: Albums
Posts: 2,622
Clearly, he needed to test the AF with a bicycle, not a car or some kids... that completely invalidates the test

Seriously, that's very good results, even in an informal test.

Part of my brain is hilariously baffled that we now have to start comparisons at ISO6400 or they're worthless because everything is so awesome...

And it looks like the DA*16-50 he used was the current one, not the PLM.
Does that mean my DA*16-50 is as good as the Zeiss 16-35 f4? Ha!

At least in terms of image quality, it looks like some folks are about to be very happy.


04-22-2021, 09:48 AM   #9
Site Supporter
Site Supporter
c.a.m's Avatar

Join Date: Jan 2013
Location: Ottawa, Canada
Photos: Gallery | Albums
Posts: 2,904

- Craig
04-22-2021, 02:47 PM   #10
Site Supporter
Site Supporter

Join Date: Dec 2007
Posts: 979
A nice, well done, short video - can’t wait to see what Albert can do with a shipping version if they loan him one.
04-22-2021, 07:13 PM - 1 Like   #11
Site Supporter
Site Supporter
Larrymc's Avatar

Join Date: Jun 2014
Location: Mississippi, USA
Posts: 4,369
QuoteOriginally posted by FozzFoster Quote
I can't wait for this damn camera.
Patience Grasshopper.
04-23-2021, 12:10 AM   #12

Join Date: Sep 2006
Location: Antwerp, Belgium
Photos: Gallery
Posts: 1,365
Interesting that he thinks ISO3200 is as good as low ISO. The Japanese gentleman I saw in another clip was talking a lot in the same way about ISO1600, guessing from the cryptic auto-translated subtitles.

So it seems depending on viewing size (Albert is looking at print/display size, the Japanese guy probably pixel peeping?) the mark III would have a lot more low light possibilities than my current mark II. I will have to test, but it seems to me that for me 2 stops up from ISO3200 would still be more than OK.

One thing not clear to me from this is the dynamic range at these higher ISO's. Noise is one thing, dynamic range another. Will have to test that myself...

04-23-2021, 08:02 AM   #13
Belnan's Avatar

Join Date: Jul 2010
Location: Nova Scotia
Photos: Albums
Posts: 966
Certainly no complaints with the noise, as good as the A7 III not too shabby.
04-24-2021, 07:34 AM - 1 Like   #14
Loyal Site Supporter

Join Date: Feb 2015
Location: Central Florida
Photos: Gallery
Posts: 2,866
Just a quick and dirty very high ISO test from last evening. I've been under the weather but better today.

This was taken indoors at 51200. First one is the complete image OOC, and the next two cropped to 200% before denoise and after.
Attached Images
View Picture EXIF
PENTAX K-3 Mark III  Photo 
View Picture EXIF
PENTAX K-3 Mark III  Photo 
View Picture EXIF
PENTAX K-3 Mark III  Photo 
04-24-2021, 07:36 AM   #15
Loyal Site Supporter

Join Date: Feb 2015
Location: Central Florida
Photos: Gallery
Posts: 2,866
Several days ago I had guessed that shots at that ISO would be usable in a pinch. With very little work done on the original I'm now convinced of it.

  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
albert siegel tests, iii, iso, iso for k-iii, pentax news, pentax rumors, siegel tests af
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
K-3 Mark III -- Images across the full range of ISO settings c.a.m Pentax K-3 III 15 04-19-2021 03:36 PM
Albert Siegel | K-3 Mark III Hands-On Andrej Pentax News and Rumors 578 02-14-2021 06:35 AM
New K3 vs K5ii high iso RAW tests ihasa Pentax K-3 & K-3 II 8 11-04-2013 09:15 AM
K-7 high ISO vs K20D high ISO supa007 Pentax DSLR Discussion 72 05-10-2010 04:24 PM

All times are GMT -7. The time now is 08:50 AM. | See also:, part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]