COGenWeb: Dating Tintypes
Ambrotype Daguerreotype, Vintage Photography, Civil Wars, Vintage Dating Ambrotype Photographs Many beautiful ambrotype images were created. Being able to evaluate a photograph to come to a conclusion of the date it was taken . The Ambrotype method appeared in , the end of the Civil War . AMBROTYPE ( to the end of the Civil War)The ambrotype is a thin negative image on glass made to appear as a positive by showing it against a black.
Success in retouching led to innovations in the darkroom and at the camera. Diffusion of the image reduced the need for retouching. This led to verbal skirmishes between photographers who insisted in "truth in photography".
Opponents called retouching degenerating, demoralizing, and untruthful practices. Cabinet cards can be further dated by color of stock, borders, corners and size. Design and colors of these cards followed those of the cards of that time. Cabinet cards are rarely found after Photographs mounted on card stock. The most popular mount sizes were: Less than 25 cents: Stamps were applied from 1 Aug. Blue playing card stamps are known to have been used in the summer of as other stamps were unavailable as the levy came to an end.
The stamp was to be canceled by requiring that the seller cancel the stamp by initializing and dating it in ink. The most rare of all of these stamps is the one cent red "playing cards" and the most common is the orange two cent "playing cards".
The stereograph is an almost identical side- by- side set of images of a single scene, viewed simultaneously through an optical device held to the eyes like a pair of binoculars. Each eye looks at a slightly different image, and the fusion of the two images in the mind creates the illusion of depth. Sizes of stereo cards and slides: The typical mass manufactured stereo card of the period between the Civil War and WW I had a standard dimension: This is the size commonly found in boxed sets.
The earliest of these cards were made on slightly curved mounts; later cards were made on slightly curved mounts that permitted greater clarity when they were seen in the stereopticon viewer.
- Daguerreotypes, Ambrotypes, and Tintypes
- Civil War Collection
- How to Date Your Old Photos
Until about the smaller sizes were sold at twenty five cents per card and the larger "artistic" size for fifty cents. Within a decade sets of twenty or more were made on printing presses, not by a hand photo- graphic process. The on- glass slides, a stereo form more popular in Europe than in America, were available in two standard sizes, 45 x mm and 6 x 13 cm.
Both were smaller than the standard card stereograph. A large contact print. To identify the wet- plate negative, look for an uneven coating were the syrupy colloidal base of the glass plate did not flow to the very edges of the glass.
Many of the plate edges reveal torn or rippled emulsion and even the fingerprints of the darkroom technician who handled it with wet fingers. Only occasionally is it possible to determine whether a print was made from a wet- plate negative, especially if the outer edge of the print has been trimmed away.
It is the edge that would immediately reveal the irregularities of the coating prepared in the field. Few Americans could afford the cost of a studio enlargement made with a solar enlarger.
The technique of making such enlargements were so complicated that few photographers had the proper skill to make an enlargement from a standard studio negative. Much of the demand for larger photographs could be satisfied by making larger negatives and larger cameras to handle them.How to Take a Civil War Photograph
Wet plate negatives were often 11" x 14" up to 20" x 24" sheets of sensitized glass. Wet- plate photographers helped to open the American West by taking their cameras out of the studio and on location assignment with the survey teams of the U. Assembled in a factory, they were usually constructed of wood frames, sometimes metal, covered in and on the back side of the door a velvet or felt pad in the door and a small latch. Union Cases - In the s thermoplastic a product made from shellac and ground sawdust came into use, because they could be decorated and dyed easier.
The photo was first, the a glass next, then a frame made of brass. Daguerreotype Method Long before the first public announcements of photographic processes inJoseph Nicephore Niepce, began experimenting with photography. To read more about The World's First Photograph go to the original text. While there were many different types of photography, the three methods of photography are discussed here.
Each type produced one of a kind picture negatives and were monochromatic. Out of their cases daguerreotypes are easily damaged. The case and the glass for the Tintypes was used just to give the appearance of the more expensive daguerreotype. They sold for 25 cents.
To view a table of the three methods differences, click here. The silver is the component that tarnishes and corrodes. Daguerre first published a description of his process in Like the hologram the daguerreotype image is only visible from certain angles.
No other photographic image has the mirror-like non-image areas or hologram-like image of the daguerreotype. Hallmark -- Stamp marks on the daguerreotype plate which identify the plate manufacturer or photographic supply house. The number indicates the ratio of silver to copper.
The most popular number was 40, indicating 1 part silver to 39 parts copper. Lists of hallmarks used by plate manufacturers and the approximate years that they were produced can be used to date images. Other inventors soon improved the process, by for example, the exposure time for the photographs had been reduced to less than a minute, developed in natural light in an artist studio.
The copper sheet was placed inside a camera and exposed to light through the camera lens for 5 to 40 minutes. This may be one reason why the subjects in this era were not smiling, it is difficult to hold a smile or keep from swaying for 40 minutes. The difference in exposure time varied with the time of day or overcast days.
After the sheet was removed from the camera, it as developed by vapors from heated mercury. The mercury combined with the silver at the points where it had been affected by light, and formed a highly detailed image.
The image was then made permanent by treating the sheet with sodium thiosulfate. His patent expired in and the market was flooded with daguerreotypist open for business. Storage Orientation Store vertically with dividers between each slide. May also be stored horizontally flat. Enclosures and folders may be stored in hanging files or archival storage boxes. Wood cabinets should be avoided.
Ambrotype - Wikipedia
Enameled steel, stainless steel, or anodized aluminum are preferred. Display Recommendations The duration of an exhibit should be determined in advance, and no item should be placed on display permanently. Most items should not be displayed for longer than 3 to 4 months, assuming other conditions such as light levels, temperature, and relative humidity are within acceptable ranges. Facsimiles or items of low artifactual value may be exhibited for longer periods of time.
Civil War Ambrotypes
Between display periods, it should be returned to an appropriate environment where it may "rest" in dark storage. Light levels should be kept as low as possible. When on display, objects should be protected from exposure to natural light, which contains high levels of UV radiation.