||Five kallitype prints
gold toned - in portfolio -
on watercolour Arches paper
Size 28 x 38 cm
ALIBI: latin entry, means
'elsewhere', 'in another place'
The kallytipe (and similar: browprint, sepiaprint, van Dyke, silver-iron print, ...)
is a photographic printing process used round the end of XIX century, not to be confused neither with the calotype (talbotype) nor with collotype.
For the kallitype,
the sensitizer is a double solution
of an iron salt and silver nitrate.
It produces a clear image
that needs only of beeing fixed
for giving a final sepia colour copy.
The copy was often gold toned
to improve the colouring (bluish) and time stability.
The process was simply feasible compared to others, but rather slow in respect to the new silver methods incoming at the epoch,
with much shorter exposition times.