On 18/12/06, John Celio <[EMAIL PROTECTED]> wrote: > Take a look at the sky in this pic. (it's a processed PIF, so you can open > it in photoshop if you want to see the exif info) > > http://www.neovenator.com/special/__IGP0101.jpg > > I was doing some city shots of San Francisco from Treasure Island last night > with my K10D. Lens was M* 300mm f4. ISO was 200, aperture was f8, exposure > was ten seconds. > > The streaky noise in the sky in that shot will almost definitely be visible > in a print. This worries me, because I was planning on recreating my San > Francisco panorama from a couple years ago. I shot that thing with 20 > second exposures but didn't get noise like this.
If the other examples I've seen are any indication you're not on your own. Did you have to push the RAW file about to get what you wanted? If so you might be best off trying some form of HDR using multiple exposures in order to preserve the highlights whilst making a more dense exposure of the sky? > Aside from wondering if perhaps something is wrong with the sensor (this is > me jumping to conclusions, which I desperately try not to do), I'm wondering > if perhaps shooting at a higher ISO and shorter exposure would produce > better results. I expect that if you want to capture the image in one hit you'll be lumbered with noise in the shadows. This little problem could end up being Pentax's worst nightmare. -- Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://home.swiftdsl.com.au/~distudio//publications/ Pentax user since 1986, PDMLer since 1998 -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
