In the final post in our series showing you how to dating your old family photographs using physical clues, Colin Harding offers some tips on how to identify postcards.
In the penultimate post in our series showing you how to date your old family photographs using physical clues, Colin Harding offers some tips on how to identify cabinet cards.
In our latest post about dating your old family photographs, Colin Harding shows you how to identify cartes de visite—a 19th century collecting craze.
Frederick Scott Archer’s discovery revolutionised photography by introducing a process which was far superior to any then in existence, yet he was to die just six years later in poverty.
The New Chrysotype Process is so named in honour of Sir John Herschel who, in his classic paper of 1842 (1), first coined the term chrysotype to describe the photochemical production of an image in colloidal gold metal.
Terry King gives an overview of gum bichromate printing, along with a step-by-step guide to the process.
Invented by Sir John Herschel in 1841, this simple process produces a continuous tone image of Prussian Blue using a sensitizing solution of ferric ammonium citrate and potassium ferricyanide.
Bromoil and Transfer was used by many photographers during the first half of the 20th century and gained great popularity.