Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
05-03-2010, 03:07 PM   #556
Senior Member




Join Date: Jun 2008
Location: Grimsby UK
Photos: Gallery
Posts: 224
Finally got a chance to test out my Pentax K-X attached to the DA* 50-135mm

really impressed, these are non cropped, RAW conversions in Lightroom 2.7 with no sharpening or processing, pure conversion only.

This one shot at dusk, but wanted some depth so f/8 ISO 3200



Trying a bit of flare Again ISO 3200



Really love that film style grain

05-03-2010, 06:34 PM   #557
Senior Member




Join Date: May 2008
Location: Victoria, Australia
Posts: 212
QuoteOriginally posted by audiobomber Quote
You forgot to mention the ISO.
First set was ISO3200

Second one was ISO1600
05-09-2010, 03:55 AM   #558
Pentaxian
JohnBee's Avatar

Join Date: Sep 2008
Location: front of computer
Posts: 4,496
K20d /ISO6400

A quick snap taken with camera calibration a few weeks back(never got around to looking at it). And so, I thought it would make a good candidate for an ACR v6 /K20D NR processing test.

K20D, ISO6400, f/7.1, 1/500, NR/OFF



Rare wild pony

Larger sized image(for your pixel peeping pleasure...)

Last edited by JohnBee; 05-09-2010 at 04:26 AM.
05-09-2010, 09:57 AM   #559
New Member




Join Date: May 2010
Location: Lund
Posts: 4
Here's a photo from a recent trip to Berlin. Shot handheld with my K-7 and DA* 16-50 wide open at 16mm and ISO800.

Attached Images
View Picture EXIF
PENTAX K-7  Photo 
05-09-2010, 01:34 PM   #560
Pentaxian
JohnBee's Avatar

Join Date: Sep 2008
Location: front of computer
Posts: 4,496
Another ISO4000 sample

A few people were asking for slower shutter speeds, but I wasn't able to find anything under 1/250 in the original set.
However.. I did manage to find a 1/60'th ISO4000 sample the same subject in another setup. This one was under a single utility light in my workshop(on my tablesaw).

*** All shots handheld
META: K20D, ISO4000, 1/60, f5.6, NR/OFF



PS. JPEG compression is higher than ave. in this scene, so there are artifacts in a number of areas.
05-10-2010, 12:18 AM   #561
Pentaxian
JohnBee's Avatar

Join Date: Sep 2008
Location: front of computer
Posts: 4,496
K20D ISO6400 Image set

All images taken at ISO6400 and preprocessed in ACR6/CS5
META: K20D, RAW, ISO6400, 28mm, f/5.6, 1/60 - 1/140

click on image for full size


click on image for full size


click on image for full size


PP TOOLS USED:
  • GordonB's Magenta Cast remover
  • Niksoft Define - Debanding software
  • Adobe Bridge and Photoshop CS5
  • Topaz Denoise 4
TDN 4 is officially the best NR removal tool in my High ISO workflow(period). A spot that held by Noiseware Professional for some time now. I will post my NR comparison samples sometime tomorrow(It's been a long night!).

Thanks for looking.
JB

Last edited by JohnBee; 05-10-2010 at 12:39 AM.
05-10-2010, 04:28 AM   #562
Pentaxian
audiobomber's Avatar

Join Date: May 2008
Location: Sudbury, Ontario
Photos: Albums
Posts: 6,631
Damnit John, these look great! Now I'm going to have go back and edit all the posts where I said the K20D was unusable at ISO 6400. How long does your regimen take per photo? Can they be batch processed?
05-10-2010, 09:22 AM   #563
Veteran Member
Pentaxor's Avatar

Join Date: May 2009
Location: Vancouver, B.C.
Photos: Gallery
Posts: 6,513
JB's post-processed NR ISO6400 images puts the camera NR results to shame.

05-10-2010, 09:35 AM   #564
Inactive Account




Join Date: Feb 2010
Location: UK
Posts: 57
ISO 1600 @ 1/4000th of a second on a K10d processed with LR3b2

05-10-2010, 10:35 AM   #565
Pentaxian
JohnBee's Avatar

Join Date: Sep 2008
Location: front of computer
Posts: 4,496
QuoteOriginally posted by audiobomber Quote
Damnit John, these look great! Now I'm going to have go back and edit all the posts where I said the K20D was unusable at ISO 6400. How long does your regimen take per photo? Can they be batch processed?
It varies, but with TDN4 in the mix it takes longer(8 cores anyone?)... So... in all fairness I'd have to say that if you want to squeeze everything out of your camera noise wise, then you'd best prepared to work for it

Ave PP time: 6-15mins
Ave time if DN4 wasn't as CPU intensive as 3D rendering: 5-8mins.

Having said all that... there is always room for batch processing too.
I estimate that with a good process in place, a shooter could get away with 1-3mins per photo using the advanced noise management techniques used here.
05-10-2010, 10:36 AM   #566
Pentaxian
JohnBee's Avatar

Join Date: Sep 2008
Location: front of computer
Posts: 4,496
QuoteOriginally posted by audiobomber Quote
Damnit John, these look great! Now I'm going to have go back and edit all the posts where I said the K20D was unusable at ISO 6400. How long does your regimen take per photo? Can they be batch processed?
Without getting ahead of things... you should see what can be persuaded out of a Kx at 128K using this method.... nothing short of scary...
05-10-2010, 11:09 AM   #567
Veteran Member
Pentaxor's Avatar

Join Date: May 2009
Location: Vancouver, B.C.
Photos: Gallery
Posts: 6,513
QuoteOriginally posted by JohnBee Quote
It varies, but with TDN4 in the mix it takes longer(8 cores anyone?)... So... in all fairness I'd have to say that if you want to squeeze everything out of your camera noise wise, then you'd best prepared to work for it

Ave PP time: 6-15mins
Ave time if DN4 wasn't as CPU intensive as 3D rendering: 5-8mins.

Having said all that... there is always room for batch processing too.
I estimate that with a good process in place, a shooter could get away with 1-3mins per photo using the advanced noise management techniques used here.
JB, are you saying that the TDN4 is a cpu memory hog? I'm planning to upgrade my system next year as I do every 3 years. although in fairness. my current pc unit is only barely about 2 years old this month and is still very much capable of performing fast processing (although not lightning speed). the only complaint I have with it is so darn noisy and beginning to exhibit some considerable heat due to wear, longevity and dust accumulation.
05-11-2010, 08:49 PM   #568
Veteran Member
Jewelltrail's Avatar

Join Date: May 2008
Location: Rhode Island
Photos: Albums
Posts: 4,180
Original Poster
QuoteQuote:
JohnBee: K20D ISO6400 Image set
All images taken at ISO6400 and preprocessed in ACR6/CS5
META: K20D, RAW, ISO6400, 28mm, f/5.6, 1/60 - 1/140
I have some K20d 6400 images with which I am delighted, but these here are the best I have seen--anywhere. Thank you so much for sharing--this is eye-opening.
05-12-2010, 02:07 AM   #569
Pentaxian
JohnBee's Avatar

Join Date: Sep 2008
Location: front of computer
Posts: 4,496
QuoteOriginally posted by Pentaxor Quote
JB, are you saying that the TDN4 is a cpu memory hog?...
Absolutely without a doubt
I have done 3D renderings that were faster than Denoise 4, and I always considered that to be intensive. So yes... I definitely think Denoise 4 is way over the top for what it does.

Also.. you have nothing to feel bad about regarding your PC. My workstation core is almost 6 years old(definitely obsolete!), and so you're definitely in better shape than I'll ever be
05-12-2010, 02:09 AM   #570
Pentaxian
JohnBee's Avatar

Join Date: Sep 2008
Location: front of computer
Posts: 4,496
QuoteOriginally posted by Jewelltrail Quote
I have some K20d 6400 images with which I am delighted, but these here are the best I have seen--anywhere. Thank you so much for sharing--this is eye-opening.
Thank-you! and you're welcome...

I am working on an ISO6400 night series using the same shooting and PP methods, which I plan on posting here shortly.
Hopefully it give other shooters the incentive to explore new areas of with their gear.

JB

Last edited by JohnBee; 05-12-2010 at 04:25 AM.
Reply

Bookmarks
  • 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!
camera, dolphin, dslr, flickr, gallery, iso, photography, post
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
How to post high resolution photo here? Underbridge Pentax Medium Format 5 12-25-2012 08:56 PM
People K-5 high ISO... how high can we really go... igor Post Your Photos! 2 03-24-2012 01:10 AM
Is there a high iso gallery for K-7? justtakingpics Pentax DSLR Discussion 13 05-31-2010 05:32 PM
K-7 high ISO vs K20D high ISO supa007 Pentax DSLR Discussion 72 05-10-2010 04:24 PM
Pentax k20d High ISO Photo Gallery PentaxPoke Pentax DSLR Discussion 68 02-18-2009 05:19 AM



All times are GMT -7. The time now is 08:12 PM. | See also: NikonForums.com, 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?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top