Dating tin types Dirty chat im
Tintype portraits were at first usually made in a formal photographic studio, like daguerreotypes and other early types of photographs, but later they were most commonly made by photographers working in booths or the open air at fairs and carnivals, as well as by itinerant sidewalk photographers.
Because the lacquered iron support (there is no actual tin used) was resilient and did not need drying, a tintype could be developed and fixed and handed to the customer only a few minutes after the picture had been taken.
The tintype was essentially a variant of the ambrotype, replacing the latter's glass plate with a thin sheet of japanned iron (hence ferro).
Ambrotypes often exhibit some flaking of their black back coating, cracking or detachment of the image-bearing emulsion layer, or other deterioration, but the image layer on a tintype has proven to be typically very durable.
It was perhaps the most acutely hazardous of all the several highly toxic chemicals originally used in this and many other early photographic processes.
One unusual piece of tintype equipment was a twelve-lensed camera that could make a dozen Each tintype is usually a camera original, so the image is usually a mirror image, reversed left to right from reality.
There are two historic tintype processes: wet and dry.
In the wet process, a collodion emulsion containing suspended silver halide crystals had to be formed on the plate just before it was exposed in the camera while still wet.
It captured scenes from the Wild West, as it was easy to produce by itinerant photographers working out of covered wagons.Chemical treatment then reduced the crystals to microscopic particles of metallic silver in proportion to the intensity and duration of their exposure to light, resulting in a visible image.The later and more convenient dry process was similar but used a gelatin emulsion which could be applied to the plate long before use and exposed in the camera dry.Although early tintypes were sometimes mounted in protective ornamental cases, like daguerreotypes and ambrotypes, uncased tintypes in simple paper mats were popular from the beginning.They were often later transferred into the precut openings provided in book-like photograph albums.