Re: digital capture and printing - noise
Re: digital capture and printing - noise
- Subject: Re: digital capture and printing - noise
- From: Ray Maxwell <email@hidden>
- Date: Mon, 19 Dec 2005 13:15:50 -0800
I don't believe that this has anything to do with the color temp. of the
lighting.
Please tell us the shutter speed for the two exposures.
My guess is that your shot with hot lights was quite long with respect
to the daylight exposures.
The longer the exposure the more thermionic noise build up in any
digital camera.
The Aptus will do an automatic dark frame subtraction for any exposure
over 1 second. This subtracts out any fixed pattern noise.
I am not sure how the Phase system deals with this.
I have a Leaf Valeo 22 and a Canon 5D.
Ray
email@hidden wrote:
All -
Looking at digital capture - I have recently had the opportunity to use both the Phase One P25 and the Leaf Aptus 22 Digital backs. Shooting in incandescent light (a 1K hot light), I notice that even when using a grey card for color correction, there is significant noise in the shadows when shooting at 400 iso.
This is apparent when printing via RIP or printer driver to the HP 130 or the Epson 9600, using either "canned" profiles or profiles I have made myself. As I do not see nearly as much noise in the shadows when shooting daylight color temp, or when using daylight strobes, I was wondering if anyone can shed some light (arrgh) on this issue - and suggest corrective action, either in capture or print phase.
Thank you,
David Saffir
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