Digital BW, The Print

Forgive me if some of these questions are redundant but:

1) Has anyone taken a densitometer and measure the base reflection densities of all the common papers?
2) Has anyone printed the cone (or other) wedge and done the same thing?
3) Am I correct in assuming that sensitometric techniques can be used to characterize all of these "green" issues? I understand that different lighting conditions can cause color shifts especially in certain organic pigments but this can also been seen by a color densitometer. 

Thanks!

Brian



[Non-text portions of this message have been removed]

--- In DigitalBlackandWhiteThePrint@y..., "Brian Mikiten" 
<bmikiten@s...> wrote:
> Forgive me if some of these questions are redundant but:
> 
> 1) Has anyone taken a densitometer and measure the base reflection 
densities of all the common papers?
> 2) Has anyone printed the cone (or other) wedge and done the same 
thing?
> 3) Am I correct in assuming that sensitometric techniques can be 
used to characterize all of these "green" issues? I understand that 
different lighting conditions can cause color shifts especially in 
certain organic pigments but this can also been seen by a color 
densitometer.

Brian,

Regarding #1 and #2 I am sure it has been done to some extent and 
hopefully will get reposted here. On #3 there is a recent post 
(13946) on the PiezoBW list from Thomas Dunn who did some 
sensitometry around the green issue.

http://groups.yahoo.com/group/piezography3000/message/13946 

My only question on this is that if the green is a metamerism that 
shows up in tungsten or halogen light, then the light sources in the 
sensitometric instruments may not detect this as they are usually of 
a higher color temperature.
 
Martin