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The alternative Super series, denoted SnR, nR Plus or nR+, has an aspect ratio of 3∶2 (or as close as possible) and thus provides a better fit for standard 135 film (35 mm) at sizes of 8 inches or above. 5R is twice the size of a 2R print, 6R twice the size of a 4R print and S8R twice the size of 6R. 4D/6D is a newer size for most consumer ...
A good example of this a 4×6 print (6 inch wide by 4 inch tall landscape) perfectly matches the 3:2 aspect ratio of a DSLR/35 mm, since 6/2=3 and 4/2=2. For analog projection of photographic slides, projector and screen use a 1:1 aspect ratio, supporting horizontal and vertical orientation equally well.
However, these dating methods are not always 100% accurate, since a Victorian photographer may have been using up old card stock, or the cabinet card may have been a re-print made many years after the photo was originally recorded. [5] Card stock. 1866–1880: square, lightweight mount; 1880–1890: square, heavy weight card stock; 1890s ...
Sizes are often expressed as a fraction of an inch, with a one in the numerator, and a decimal number in the denominator. For example, 1/2.5 converts to 2/5 as a simple fraction, or 0.4 as a decimal number. This "inch" system gives a result approximately 1.5 times the length of the diagonal of the sensor.
Print/export Download as PDF; ... Used only in Tandy Portable Disk Drive 2 5 1 ⁄ 4 inch Double 1 35 18 256 ... 8 inch single 1 50 8 3,500 b: hard 1.4 Mb [15]
The Speed Graphic was available in 2¼ × 3¼ inch, 3¼ × 4¼ inch, 5 × 7 inch and the most common format 4 × 5 inch. Because of the focal plane shutter, the Speed Graphic can also use lenses that do not have shutters (known as barrel lenses). [4] Using a Speed Graphic, especially with the rear shutter system, was a slow process.
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