Digital BW, The Print

Thanks Ernst and Phil.  Sounds like the best bet is to buy the plaque.
The plaques weren't advertised with the densitometer, but it was a 
good enough deal to make it worth it anyway.  Thanks again.
Peter


--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Phil Rose" 
<pjrose@f...> wrote:
> 
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, Ernst Dinkla
> <E.Dinkla@c...> wrote:
> 
> > zonepeter wrote:
>  
> > >My densitometer arrived today without calibration plaques. 
> 
> 
>  
>  
> > The IT8 ones are color paper and they fade in hue and density,
> average 
> > numbers from the web are a risk too, an IT8 target should have a
> batch 
> > measurement table somewhere, check the number and date on the 
target
> and 
> > do a search. If it isn't too old you will find the numbers
> somewhere, if 
> > not consider the target as being too old.
> 
> ...aside from the possibility of fading,a paper target's accuracy 
will
> deteriorate due to handling and normal use, including the necessary
> direct contact that's made with the densitometer--so  such a 
standard
> is not likely to be relaible for long-term use (i.e., used for
> frequent recalibration). If the densitometer was advertised as "with
> plaque" but did not include it, I'd certainly complain to the seller
> and demand some compensation.
> 
> Phil