Digital BW, The Print

Hi Bob,

That's a great great idea :-).  I just have to find one BW 
target ..... Do you know if someone (kodak,...) manufacture such BW 
targets ?

Thanks again for your idea !

J.

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Robert 
Whitehouse" <bob.whitehouse@...> wrote:
>
> You could always just calibrate it by using it on a BW target with 
known
> density?
> 
> 
>    _____  
> 
> From: DigitalBlackandWhiteThePrint@yahoogroups.com
> [mailto:DigitalBlackandWhiteThePrint@yahoogroups.com] On Behalf Of 
joejx8
> Sent: 23 March 2006 10:13
> To: DigitalBlackandWhiteThePrint@yahoogroups.com
> Subject: [Digital BW] Converting RGB density readings into BW 
density
> readings
> 
> 
> 
> Hi,
> 
> I am intended to buy an old/used densitometer. I have seen a model 
> which seems to measure only R,G,B *density*. 
> 
> Is there a mean to get a BW *density* value (by calculation) from 
R,G,B 
> density values... I was thinking at a formula like DBW= 0,7*DR + 
0,2*DG 
> + 0,1*DB  (values are just for illustration) ?
> 
> Thanks !
> 
> J.
> 
> 
> 
> 
> 
> 
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