Pentax K10D - Absolute Black Darkness - TEST

Aktivo · 2006-12-24T00:55:32+0000

- Set (Green) Mode to: Manual - Set Aperture to: Maximum - Set Speed to: 30 seconds - Adjust EV Compensation to: +3EV - Set Sensitivity to: ISO100 - Set Selft-Timer Shooting 12 secs. - Set Format to: RAW Put camera to absolute darkness and press the shutter release button. Open image in some editor and you will see some "stars" (pixels). Why ? Try this test again with ISO1600 - more pixels you will see. Why this pixels are there ? Try this test again, but remove lens - without lens. If don't see any pixels - use gamma correction up to 10.0.

Pentax Digital SLRsPentax Digital SLRs

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Aktivo Aktivo

10 posts
19 years

Posted 29/12/2006 - 23:15 Link

Thanks to all for your help/answers again.

Aktivo Aktivo

10 posts
19 years

Posted 13/01/2007 - 00:13 Link

I'm still thinking about NOISE REDUCTION.

Noise Reduction remove hot pixels.
If nobody wants hot pixels, why this function (NR) can by switch off ?

A.

kcmadr kcmadr

275 posts
19 years

Posted 13/01/2007 - 00:15 Link

Some people like a bit of grain-like effect to show up in their photos...
How much is determined by the settings.

Ammonyte Ammonyte

1221 posts
21 years
Buckinghamshire

Posted 13/01/2007 - 12:04 Link

Also NR can slow things down a bit, if you take a 3 second exposure, the camera takes another 3 second exposure (with the shutter closed) to produce some "reference" noise which it can subtract from the first image.

Tim the Ammonyte
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K10D & sundry toys
http://www.ammonyte.com/photos.html