Different processes

William B becket:
In 1858 he created the ambrotype which in an image which is a mix of both a negative image and a possitive.

Painted daguerrotype:
These images are painted over to add colour and these were initially the first way to get a coloured image.

blue print:
The blue prints are actually made using the cynotype process and were initially made to create plans for inventions and building projects as the sharp detail was easy to read and accurate

Ducos De hauron:
He made coloured images by layering different coloured assitate onto one another in order to create a coloured image each layer is coloured and printed one colour at a time.