[pasipasi]

When testing high iso, the test circumstances should be as close to real life situation as possible: very dark. No one shoots 6400 in good light and you've had pretty good light here (F/8 1/60). I had to turn my ISO 6400 shot black and white, because the noise was so terrible:

[JohnBee]

When testing high iso, the test circumstances should be as close to real life situation as possible: very dark. No one shoots 6400 in good light and you've had pretty good light here (F/8 1/60). I had to turn my ISO 6400 shot black and white, because the noise was so terrible:

Well I agree with the noise situation in that shot. However... I disagree with a few portions of your statement regarding lighting and shooting conditions.

1. All of my images were taken in low light(single light source, household light-bulb).
2. There are plenty of reasons to shoot high ISO other than in complete darkness(ie. motion, DOF control, indoor settings etc etc.)

So it's not all black and white either

But don't take my word for it, here are some(almost pitch black) samples that are pretty much in the dark(so to speak).

K20D/ISO6400

click on image for full size

CROP:

click on image for full size

The orange glow is from a heater and the ambient light was coming in from a street lamp through the basement window.
So it really doesn't get much lower than that

[DogLover]

I noticed the link to GBG's magenta cast remover says its for the K20, so I assume it doesn't work for the K7. Is there not one for the K7? Is the K7 so awesome it doesn't need one?

[wowtip]

Pentax K20D Raw Border Correcter vs0.9.0.0.zip

Thanks, will try it out when I get the oppertunity to take some high shots next time.

[jbinpg]

@doglover: Indeed it is the case that the K-7 does not need GBG's Pentax Raw Border Corrector. GBG himself discovered that the K-7 does a bang up job in this respect and does not need correction. I couldn't live without his software for my K20, though.

[DogLover]

Thanks, jpinbg. I was being facetious but its nice to know that the K7 really is awesome in this respect.

[Recercare]

Even though I am a happy Nik Define user I couldn't resist downloading Topaz.
I used the presets "Moderate Noise" and "Strong Noise" for three concert shots.....ISO 1600 pushed +1EV to ISO 3200 with the K10D.
I was shocked...Wow! It does a great job! Much better than Nik Define.

At low ISO I still prefer Nik Define because the u-point feature allows different NR to different parts of the image. I never apply NR on the whole image at ISOs between 200-560.

So, I am really happy. Now I don't hesitate to use ISO 1600 on my K10d

Kind regards
.lars