-A direct-positive process, creating a highly detailed image on a sheet of copper, plated with a thin coat of silver without the use of a negative.

-Renders incredible detail. 

-The appearance changes with the angle of viewing and can look positive from some angles, and can barely be seen at all from other angles.  

-Daguerreotypes were normally mounted behind glass in small hinged cases with velvet lining. Very fragile. 

-meaning "beautiful print"

-was a positive/negative process

-a sheet of paper coated with silver chloride was exposed to light in a camera obscura; those areas hit by light became dark in tone, yielding a negative image.

-The calotype created a negative image on the silver iodide from which positives could be printed (onto silver chloride paper)

-Known as the "wet plate" process

-The collodion process was the first widely used photographic process that produced a negative image on a transparent photographic medium. 

-the photographer could make an unlimited number of prints from a single negative

-The support for the images was glass

-Required only seconds for exposure.

-Polish plate, coat plate, sesitize plate, develop plate 

-salt prints by placing lace, leaves and other objects on light-sensitive paper and exposing it to the sun

- tonal range that favored volume and shape over detail

-Although Talbot used photogenic drawing paper in the camera--creating negatives by 1835--exposures in the camera often took hours, so most photogenic drawings were made by the superposition of objects.

-The process used bitumen, as a coating on glass or metal, which hardened in relation to exposure to light. When the plate was washed with oil of lavender, only the hardened image area remained.

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the albumen print is a printing paper coated with albumen salt and citric acid and sensitized with silver nitrate. 

Its a method of producing a photgraphic print on a base paper from a negative. 

Use albument found in egg whites to bind the photographic chemicals to the paper and became the dominant form of photographic positives. 

Albumen prints have a slightly glossy surface.  They are sepia colour, some having a fine range of tones in  gold or brown.

Albumen prints retained detail well, and did not show the texture of the paper