Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
03-06-2011, 10:20 PM   #1
Inactive Account




Join Date: Oct 2010
Posts: 4
How to elminate K7 high iso noise

How to elminate K7 high iso noise

I get annoyed by the output at high iso.

03-06-2011, 11:29 PM   #2
Junior Member




Join Date: Jan 2011
Location: Northern Norway
Posts: 49
There's always Noise Ninja, but the manual method is always better.
Shoot RAW, remove noise/sharpen locally by using masks, layers and/or channels.
This method is too complicated to explain here, so learn how to use masks/layers/channels
in Photoshop. (Hint: Do a google-search for "channels+find edges").
If your subject is static and doesn't move shoot many identical frames in RAW and make a stack of layers in Photoshop.

Reduce Noise Using 32-bit Photoshop Image Stack Averaging

Averaging produces stunning results, and a stack of 32 images shot at 6400 ISO will look
as noise free as a 200 ISO single image.
03-06-2011, 11:29 PM   #3
Veteran Member




Join Date: May 2009
Location: Ankeny, Iowa
Photos: Gallery
Posts: 388
Shoot Raw and have a right PP software to deal with the noise
03-06-2011, 11:58 PM   #4
hcc
Pentaxian
hcc's Avatar

Join Date: Nov 2009
Location: Brisbane, Australia
Photos: Gallery | Albums
Posts: 3,531
There are two very well known techniques to reduce/remove high-ISO noise with the K-7:

(a) in-camera noise reduction based upon the method of Adam (https://www.pentaxforums.com/forums/pentax-dslr-discussion/106600-k-7-high-iso-success.html); the methos works well if you follow closely the settings of Adam;

(b) remove all in-camera PP, and do noise reduction in computer using a dedicated software like Noiseware and co; I use Noiseware and I am very happy of the outcome with ISO up to 3200.

Personally I prefer the second method. It gives more pleasing results in my opinion, but the first method is simpler since it does not require PP.


However there is another approach. If you need to shoot in low-light conditions, do use a fast prime lens (eg f1.4). I got some excellent results with my Voigtlander Nokton 58mm f1.4. In a few situations, I was shooting at dusk with friends using the latest Kanikon dSLRs with kit lens. Using the K-7 + Nokton 58m f1.4, I could shoot below ISO 800 when it was too dark for them to shoot with their Canikon.

Hope that the comment will help....


Last edited by hcc; 03-07-2011 at 12:12 AM.
03-07-2011, 04:27 AM   #5
JHD
Veteran Member




Join Date: Jan 2010
Photos: Albums
Posts: 1,407
My time is too valuable to fret and nitpick over this so I just use Topaz Denoise and it works good enough for me. IMO people obsess too much over pixels and technicalities. Learn how to see great pictures and develop your creative instincts... that is a much better investment of your mind, time and energy.
03-07-2011, 04:39 AM   #6
Veteran Member
Wombat's Avatar

Join Date: May 2008
Location: South Australia
Photos: Gallery | Albums
Posts: 901
QuoteOriginally posted by JHD Quote
My time is too valuable to fret and nitpick over this so I just use Topaz Denoise and it works good enough for me. IMO people obsess too much over pixels and technicalities. Learn how to see great pictures and develop your creative instincts... that is a much better investment of your mind, time and energy.
Amen, Brother.
03-07-2011, 05:09 AM   #7
Pentaxian
bobmaxja's Avatar

Join Date: Mar 2010
Location: Laval, Quebec Canada
Posts: 1,736
QuoteOriginally posted by alexshen8 Quote
How to elminate K7 high iso noise

I get annoyed by the output at high iso.
What ISO are you talking?
03-07-2011, 05:43 AM   #8
Junior Member




Join Date: Jan 2011
Location: Northern Norway
Posts: 49
A single method of noise reduction suited for all situation does simply not exist. With my K20d and 400 ISO and broad daylight I hardly need any noise reduction at all. When the light is a bit dimmer Noise Ninja or any other software does a good job. But try to do this . . . https://www.pentaxforums.com/forums/pentax-dslr-discussion/135754-k20d-night-photography-high-iso.html
. . . in the dead of night, and I'll guarantee that automated software will fall short. In situations like this there's no other way than using manual labour in PS if you want your image reasonably noise-free.

03-07-2011, 06:42 AM   #9
Pentaxian
Wheatfield's Avatar

Join Date: Apr 2008
Location: The wheatfields of Canada
Posts: 10,155
QuoteOriginally posted by alexshen8 Quote
How to elminate K7 high iso noise

I get annoyed by the output at high iso.
I used Adobe Camera RAW's noise reduction.
It works very well.
Now I use a K5, and it works even better.
03-07-2011, 10:25 AM   #10
Veteran Member
PePe's Avatar

Join Date: Nov 2007
Location: Helsinki, Finland
Photos: Gallery | Albums
Posts: 464
I used ACR´s noise reduction up to about ISO 1000. The latest versions of ACR work pretty well.
Above ISO 1000 I used a dedicated noise reduction software like Topaz DeNoise or Noise Ninja
03-07-2011, 10:45 AM   #11
Senior Member




Join Date: Jul 2008
Location: south africa, johannesburg
Photos: Gallery
Posts: 228
K7 noise reduction

For the OP, seriously, get a trial of DxO and provided you are using a lens supported by DxO, be prepared to be blown away.

Even if your lens is not supported, the noise reduction is excellent in raw. I tested K7 images from the net and was able to get clean images at iso3200 taken in dark places.

Better, as far as I could see, than noise ninja et al.

I currently use my K-X set on auto iso 200 - 3200, with no worries about noise at 3200. Images are clean. The K7 will give you decent clean images at 1600 and usable images at 3200 iso.

Give it a trial, it will cost you nothing and may cause you to find a new lease of life for your K7.
03-07-2011, 12:55 PM   #12
Veteran Member
abmj's Avatar

Join Date: Apr 2010
Location: Central California
Posts: 600
Another vote for Topaz Denoise 5. I've tried several other plug-ins but nothing works as well as TD5.
03-07-2011, 01:03 PM   #13
Loyal Site Supporter




Join Date: Aug 2010
Location: Toronto
Posts: 2,104
I'm not in a position to make a comparative assessment, but I've had good luck with Nik software's denoise, which I bought because I was already a fan of Silver Efex Pro--but my guess is that you would be happy with any of the noise reduction software mentioned here.
03-07-2011, 10:23 PM   #14
Veteran Member
Laurentiu Cristofor's Avatar

Join Date: Nov 2009
Location: WA
Photos: Albums
Posts: 3,044
QuoteOriginally posted by alexshen8 Quote
How to elminate K7 high iso noise

I get annoyed by the output at high iso.
Why don't you post a sample of annoying high iso output? Not a test shot - some real use scenario where the results are not up to your expectations.
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, dslr, elminate, iso, k7, k7 high iso, noise, photography
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Much noise at High ISO on the ist DL? mrooney08 Pentax DSLR Discussion 0 12-10-2010 02:08 PM
The K7 and High ISO noise Workingdog Pentax DSLR Discussion 49 11-24-2010 05:14 AM
K-5 and High ISO Noise software David Pentax K-5 7 11-24-2010 01:16 AM
getting the most noise free high iso from k7 opiedog Pentax DSLR Discussion 40 03-27-2010 02:29 AM
More to KX high ISO than low noise telfish Pentax DSLR Discussion 1 02-11-2010 02:22 PM



All times are GMT -7. The time now is 04:02 PM. | See also: NikonForums.com, CanonForums.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