Sizes of Photographs Enlargements were not a feature of early photographic processes.  The size of the final photo was the same as that of the negative or photographic plate.
Ambrotypes and Tintypes	Ambrotypes and Tintypes would usually be a fraction of a whole-plate glass size.  Tintype sizes (inches): Full-plate 6½" x 8½" Half-plate 4½" x 5½" (See NOTE below) 1/4 plate 3 1/8" x 4 1/8"(See NOTE below) 1/6 plate 2 ½" x 3 ½" 1/9 plate 2" x 2 ½" 1/16 plate 1 5/8" x 2 1/8" Gem ½" x 1" NOTE: The sizes quoted above for half-plate and quarter-plate are a little different from 'normal' glass plate sizes.  I don't know why. Half-plate and whole plate sizes for glass plates are the appropriate proportions of whole-plate.  i.e. -  6.5 ins x 4.25 ins (half-plate) -  4.25 ins x 3.25 ins (quarter-plate)		from 1850s
	Small The smaller tintype photos that I have seen are 1 ½" x 2 ½" and ½" x 1" In both cases, they have been mounted on trade cards 4 x 2 ½ ins.
	Large I have also received an email from a collector in London who has a photograph of a young girl with dress, ear rings and rings painted over the original photo.  It is a tintype measuring 13 ins x 10 ins.
Boudoir Prints	8.5 ins x 5.25 ins		from when?
Cabinet Prints	Portraits In the 19th century, studio portraits were usually produced as either cartes de visite (the smaller size) or cabinet prints (the larger size). Prices for multiple copies were affordable and 19th century photograph albums were usually designed so that these sizes of photo could be slotted into them. Size Cabinet prints were 5.5 ins x 4 ins photos mounted on cards 6.5 x 4.25 ins. with the photographer's name and address on the back of the card (or occasionally below the photo on the front of the card. Here are some examples of cabinet print portraits		from 1866
Cabinet size	Views Cabinet size views were 8ins x 6 ins.  They were collected and mounted in albums in the 19th century.  Albums can still be found, often containing views by Valentine of Dundee and George Washington Wilson of Aberdeen. Valentine sold their cabinet size views for a shilling (£0.05) each.  [Roddy Simpson] From the start of the 20th century, views were normally sold as postcards by Valentine and others.		from mid- 1860s
Cartes de Visite	Small Portraits In the 19th century, studio portraits were usually produced as either cartes de visite (the smaller size) or cabinet prints (the larger size).  Photograph albums were usually designed so that these sizes of photo could be slotted into them. Size Cartes de visite 3.5 ins x 2.25 ins photos mounted on trade cards 4.125 ins  x 2.5 ins. Cartes de visite were:     -  invented by Count Olympe Aguado     -  patented by AAE Disderi, France, 1854. They enabled 4, 6 or 10 different image to be exposed on a single glass plate. Most cartes de visites were used for portraits		from 1853 See Dates
	The Price of Cartes de Visite A photographer of high standing might have charged 10s 6d (£0.525) for a dozen for cartes de visite. But some photographers charged only 6d (£0.025) per dozen, so bringing photographs within the reach of a far wider audience. [Ref:  Dr Ralph W Rimmer FRPS in an article entitled Poverty: A Subject for Photography:  The PhotoHistorian, Sep 2003, pp.5-7]
	Materials for Cartes de Visite An advert was placed in the British Journal of Photography Almanac in the early 1860s by The London Stereoscopic Co, 55 Cheapside, London. It offered: -  Highly albumenised paper (the same as used by the artists of the company):  12s per quire -  Cards, plain white best quality:  10s per 1,000 - Ditto with address lithographed on the back:  21s per 1,000 (first 1,000) then 17s per 1,000.
Coupon Prints	3.5 ins x 1.5 ins  produced in strips		Edwardian
Glass Plates for wet collodion	The largest plate made in America was 18 x 22 ins, derived from the largest size of Albumen paper that could be bought from France. (In the 1860s, there were no enlargers, so all prints were contact prints.  Carleton Watkins had a camera specially made to take 18 x 22 ins plates.  His views of Yosemite are recommended.) [Ken Watson]
Imperial Prints IMP	9.875 ins x 6.875 ins		from when?
Imperial Size	Photographs measuring 12ins x 8ins, sold by Valentine for two shillings (£0.10) each. [Roddy Simpson]		from mid- 1860s
	This size was referred to as 'very long cabinet style photographs' in Marcel Safier's comments about photograph albums		from 1890s
Minette	Minettes were photos about 1.5 ins x 2.5 ins mounted on cards 1.625 ins x 3 ins. Minettes are mentioned Marcel Safier's comments about photograph albums		from 1870s
Panel Prints	5.25 ins x 1.75 ins OR 8.25 ins x 4 ins		early 1900s
Paris Panels	This size was referred to as 'very long cabinet style photographs' in Marcel Safier's comments about photograph albums Marcel says that they were more suited to framing than photograph albums.		from 1890s
Photograph Albums	Here are some observations on photograph albums and the size of prints they were designed to hold in the late-Victorian era.		1860s to 1900
Plates	8.5 ins x 6.5 ins (whole plate) OR 6.5 ins x 4.75 ins (half-plate)  [See NOTE below) 4.25 ins x 3.25 ins (quarter-plate) NOTE: The sizes quoted above are the sizes of half-plate photographic papers that I used to buy.  In particular, this half-plate size is a little longer than half of a whole plate.  I presume that paper was sold in this size (rather than 6.5 ins x 4.25 ins) to keep the paper approximately in the same proportions as for whole-plate and quarter plate photos.  i.e. with the long side about 1.3 x the short side. However, half-plate glass plates would have been cut by cutting a whole-plate sheet of glass into two, so I expect that these would have been 6.5 ins x 4.25 ins. Half-plate negatives were presumably made to fit into cameras designed for half-plate glass slides so I these may well have also been 6.5 ins x 4.25 ins. Whole-plate sheets of glass were also cut into smaller sizes including 1/6th plate, 1/9th-plate, 1/12th plate.		Victorian,  Edwardian and later
Polyfotos	Polyfotos were popular in the 1950s  -  48 different small photos, often of children,  were contact printed onto a single sheet, then the best would be chosen to be enlarged. This Science & Society web site has examples of Polyfotos.		c.1950s
Post Cards	An international postcard craze developed following the Paris Exhibition in 1889. Court Cards:  4.5 ins x 3.5 ins From 1899:  5.25 ins x 3.25 ins More recently:  Also larger cards		from 1894 UK
Promenade Prints	7 ins x 4 ins		from 1875
Roll Film	Early roll film: 2.5 ins Eastman circular negatives (1888) Popular roll film from the early 1900s onwards. 2 ins x 1 ins (120) for Kodak Brownie 1900 3.25 ins x 2.25 ins (120) for Brownie2 - 1901/2  120 film is still sold today and used to expose 8 negatives 3.25 ins x 2.25 ins or 12 negatives 2.25 ins x 2.25 ins. 220 film  is also sold.  It is similar to 120 but twice as long. 2.5 ins x 1.625 ins  (8 exposures) OR 1.625 ins x 1.625 ins (12 exposures (127 film) 1912 Larger film for early folding cameras from 1890s included: 4.25 ins x 3.25 ins (quarter plate) 5.5 ins x 3.25 ins (post card) Some smaller negative sizes were introduced in the 1930s, once enlarging had become more widespread.  These included: 2.25 ins x 1.25 ins and 1.5 ins x 1.25 ins   © Here is a camera introduced in 1895 that was designed to work with either film or slide.		1888
Stereo Cards	Pairs of photos, each 3 ins x 3 ins   mounted on card 7 ins x 3.25 ins OR mounted on card 7 ins x 3.25 ins		from 1854 Europe from c.1859 USA IMP
Victoria Prints IMP	Photos 3.5 ins x 5 ins		from 1870s
Wallet Size Prints IMP	Browsing through the internet tells me that 'wallet size' is a term used for photos between about 3 ins x 2 ins and 3.5 ins x2.5 ins		current
Coloured Prints 7 ins long	©	Please click this link to see these Panoramic Images	early 1900s
ACKNOWLEDGEMENTS: 1. Much of the detail above has been taken from Dating Old Photographs.-  a very useful booklet which also looks at fashion and other means of dating early photos. 2. IMP: Details were originally Published By George Eastman House, Rochester, New York (Now: International Museum Of Photography)