Digital BW, The Print

yes that's right, and I have seen Steve's prints as well. I don't
shoot interiors like Steve, but often back lit landscapes or other
difficult SBR. Whether or not a acanner can capture a wide film
density range has nothing to to with bit depth. Bit depth pertains to
how many levels between the extremes are described, not the extremes
themselves.

Many film developer combinations can handle extreme scene ranges. Then
the issue is exposing and processing into a range your scanner can
capture, usually not hard with negs. Once there, you could scan in 8
bit or 16 bit and get it all. After that the bit depth choice has to
do with process loss, editing, drivers, etc...
Tyler

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "David Whistance"
<david.whistance@...> wrote:
>
> I'm not sure where this comes from.  16 bits of data gives 2 to the
power of
> 16 shades of grey, ie 65,536 of them.  Should be plenty to divide by 17
> stops, particularly as the relationship between a stop and a set of
shades
> of grey is arbitrary - you can map them how you like with either the
scanner
> software or Photoshop.  What does surprise me is that Steve gets
this from
> an Epson V700, however I've seen some of his images and he does
undoubtedly
> capture a very large SBR with detail at both ends so I'm sure he's
right.
> 
> David Whistance
> 
> -----Original Message-----
> From: DigitalBlackandWhiteThePrint@...m
> [mailto:DigitalBlackandWhiteThePrint@yahoogroups.com]On Behalf Of Tom
> Baker
> Sent: 07 October 2008 22:04
> To: DigitalBlackandWhiteThePrint@yahoogroups.com
> Subject: RE: Subject Brightness Range - branch from [Digital BW] Re:
> Getting reasonable scan file sizes w/ MF & LF ...
> 
> 
> But, anything over 16 can't be represented in a 16 bit tiff file.
>  
> TB
> 
> 
> --- On Tue, 10/7/08, Steve Gledhill <stephengledhill@...> wrote:
> 
> From: Steve Gledhill <stephengledhill@...>
> Subject: RE: Subject Brightness Range - branch from [Digital BW] Re:
Getting
> reasonable scan file sizes w/ MF & LF ...
> To: DigitalBlackandWhiteThePrint@yahoogroups.com
> Date: Tuesday, October 7, 2008, 1:31 PM
> 
> 
> 
> 
> 
> 
> Dana,
> 
> Not many images have that range â€" but lately I’ve been
photographing in
> cathedrals where the deep interior shadows through to the sunlit stained
> glass windows certainly have that challenge. So ... yes, I really do.
> 
> Steve Gledhill
> 
> www.virtuallygrey. co.uk <http://www.virtuall ygrey.co. uk/>
> 
> From: DigitalBlackandWhit eThePrint@ yahoogroups. com
> [mailto:DigitalBlackandWhit eThePrint@ yahoogroups. com] On Behalf
Of Dana
> H. Myers
> Sent: 07 October 2008 21:21
> To: DigitalBlackandWhit eThePrint@ yahoogroups. com
> Subject: Re: Subject Brightness Range - branch from [Digital BW] Re:
Getting
> reasonable scan file sizes w/ MF & LF ...
> 
> Steve Gledhill wrote:
> > The next step requires the scanner to be able to scan high
> > density negatives â€" or more specifically, areas of high density
â€" the
> > highlights. My Epson V700 does that for me. The scanner captures the
> > whole range from clear film base to the maximum density of the
negative
> > and represents it in the TIFF file as a full range 16-bit greyscale
> > scan. So the huge SBR in the original scene is ‘compressed’
(via my
> > workflow) into the range my paper is capable of â€" i.e. maximum
ink black
> > to paper white.
> 
> Do you really capture 17-stops of range using a 16-bit TIFF?
> 
> Dana
> 
> [Non-text portions of this message have been removed]
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> [Non-text portions of this message have been removed]
> 
> 
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