If you check the EXIF info, you'll see that the exposure was +0.70  I'm
sure that, had I been shooting more "to the left" the noise would have been
quite bad.  I've had good results in many situations @ 1600 and 3200, but,
as Godders mentioned in another message here, underexposure will make the
image, especially at higher ISO settings, quite noisy.

I suspect quite a number of people treat their DSLR exposures as though
they were shooting slide film - exposing for the highlights.  That often
causes under or marginal exposure in other parts of the image, and
generates more noise.  I think when using RAW you've sometimes got to
expose a little differently.

Shel



> [Original Message]
> From: Paul Stenquist 

> It's excellent. The Pentax only gets noisy when the image is 
> underexposed at high ISO. I think users frequently try for 1600 when 
> they really need 3200, hence the reputation for noise. But I too have 
> found that my *istD is remarkably free of noise at high ISO. I expect 
> even better performance from the 10D, despite the higher resolution.

>  Shel Belinkoff wrote:

> There were some comments about how noisy ISO 3200 is with the 
> Pentax DSLR's. Here's a large section from a photo I took last
>  month @  Godders' reception. 

>  http://home.earthlink.net/~my-pics/IMGP4540-sect.jpg

> > Lens SMCP-A 50/1.4 @ f/2.8, 1/20 sec handheld
> >
> >
> > Model - PENTAX *ist DS
> > Orientation - Top left
> > XResolution - 330
> > YResolution - 330
> > ResolutionUnit - Inch
> > Software - Adobe Photoshop CS Windows
> > DateTime - 2006:09:08 14:27:06
> > ExifOffset - 220
> > ExposureTime - 1/20 seconds
> > FNumber - 2.80
> > ExposureProgram - Aperture priority
> > ISOSpeedRatings - 3200
> > DateTimeOriginal - 2006:08:19 20:27:53
> > ShutterSpeedValue - 1/20 seconds
> > ApertureValue - F 2.80
> > ExposureBiasValue - 0.70
> > MeteringMode - Center weighted average
> > Flash - Not fired, compulsory flash mode
> > ColorSpace - sRGB
> > ExifImageWidth - 1000
> > ExifImageHeight - 800



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