I find that if I want low-key with lots of shadow, I get better results by 
pulling down the shadows in post processing, generally with curves adjustments. 
Exposing for heavy blacks always creates noise, particularly at high ISO.
Paul
 -------------- Original message ----------------------
From: "Shel Belinkoff" <[EMAIL PROTECTED]>
> I understand that part, and that's what I've been doing (I shoot a lot @
> +.3,+.7, even +1, and sometimes, depending on the light and the scene,
> +1.3), and getting good results.  But ... when I want a low key shot, with
> lots of dark areas in a photo, that's where my results suffer.  Noise in
> the shadows is a constant problem for me, yet I don't see it as much in the
> work of other people.  They seem to get cleaner shadows with better Zone
> 1-2-3 separation.
> 
> I sent you some examples of this a month or so back, but hadn't heard back
> from you - figured you were busy with other things (which you were) or
> maybe didn't get the message, then I got overwhelmed with some things here
> ...
> 
> I want to be able to get better low-key results with less noise
> (quantization maybe?) in the darker areas of my photos on a more consistent
> basis.
> 
> Shel
> 
> 
> 
> > [Original Message]
> > From: Godfrey DiGiorgi 
> 
> > It's more a matter of exposure evaluation than image processing,  
> > Shel. You need to stuff the highlight areas where you want detail up  
> > as close to saturation as you can get without hitting the saturation  
> > level, which often seems like overexposure to a film camera shooter,  
> > and then adjust the RAW conversion curves appropriately. That gives  
> > you the most data to work with in shadow regions and the least noise.
> >
> > At high ISO settings, dynamic range is reduced so it becomes more  
> > essential to get enough exposure in or bottom-end values are swamped  
> > with noise.
> 
> 
> 
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