"This is a common problem. The blue colour is caused by the anti-halation dye reforming due to the increasing acidity. The channeling is caused by the shrinking film base due to the loss of acetate groups from the cellulose acetate…"
"Not exactly a studio but there are some darkroom traces still in situ in Linley Sambourne House in London, or were the last time I visited. In normal circumstances it is open to the public. Linley Sambourne was a cartoonist for Punch and…"
When I worked at the British Museum in the 1980s Roger Fenton's old studio was still there. It was being used by a designer but I understand there were one or two stands still present (I didn't get to see it but my…"
"Good evening Elisa,
Yes, I am aware the sample sizes are small and represent a tiny proportion of the relevant photographer's output. In all I looked at almost 400 daguerreotypes. Fortunately I didn't draw any firm conclusions…"
"This is very interesting work and a stimulating discussion.
I found Ken Jacobson's comment on the unusual '‘flatness’ of the arched top of the mat' intriguing and set out to look for other examples on Daguerreobase,…"