Colour Photography

· Can you find Image evidence of the technique?

· When was it first discovered and by whom?

James Clerk Maxwell 1855

· What is special about the technique?

It makes black and white pictures colourful.

· How does this technique work? Can you find or describe the processes needed to make it work? Maybe illustrate how it is made.

· Can you comment how important this technique has been for the history of photography. For example was it popular and is it still used today?

Camera Obscura

· Can you find Image evidence of the technique?

· When was it first discovered and by whom?

470 BCE – 390 BCE by Mo-Ti.

· What is special about the technique?

It projects what is out side into the room through a small gap.

· How does this technique work? Can you find or describe the processes needed to make it work? Maybe illustrate how it is made.

· Can you comment how important this technique has been for the history of photography. For example was it popular and is it still used today?

Daguerrotype

· Can you find Image evidence of the technique?

· When was it first discovered and by whom?

Louis Daguerre in the 19^th century.

· What is special about the technique?

That it is an image projected onto a mirror

· How does this technique work? Can you find or describe the processes needed to make it work? Maybe illustrate how it is made.

The latent image was developed, by placing the exposed plate over a slightly heated (about 30°C / 90°F) cup of mercury. The next operation was to fix the photographic image permanently on the plate by dipping in a solution of hyposulphite of soda to dissolve the unexposed halides.

· Can you comment how important this technique has been for the history of photography. For example was it popular and is it still used today?