Alternative processes

I've always been drawn to traditional photographic techniques, and it was interesting to see last week at the St Martins Postgraduate Certificate in Photography show that one of the trends this year had been an increased interest by students in some of the more traditional analogue processes.  I loved Yoshimi Lee's work, who had used the 19th century wet plate collodion process - the same process Sally Mann has used in some of her current exhibits at The Photographer's Gallery.  I've not tried the wet plate collodion process (yet), but here are a couple of my cyanotype (blue) and Van Dyke (brown) attempts from a few years ago.