RE: Van Dyke and Kallitype
Ok Sandy,
Thanks. I see in the archives that yiu did some 
experimentation with longevity of toned VDB's. Did you come to any 
conclusons?
David H 
 
On Sep 21 2006, Sandy 
King wrote: 
I put Argyrotype in the same class with VDB. 
Untoned Argyrotypes are 
probably more permanent that VDBs. However, 
for maximum archival 
qualities there is no question but tht 
Argyrotypes should be toned 
like VDBs and kallitypes.
Visually untoned Argyrotypes look like untoned VDBs to me so they 
rate the same here. Also, like VDB there is very little, if any, 
contrast control.
Process wise Argyrotype is much more paper 
sensitive than VDB and 
kallitype. Many papers that work well with VDB 
and kallitype don't 
work well with Argyrotype, and many that do 
work well are quite 
expensive.
Sandy
>Hi Sandy et al,
>
>How would 
you rate the newcomer to the family, Argyrotype?
>
>
>
>David H