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The name of a 1" digital sensor should more accurately be read as "one inch video camera tube equivalent" sensor. Current digital image sensor size descriptors are the video camera tube equivalency size, not the actual size of the sensor. For example, a 1" sensor has a diagonal measurement of 16 mm. [26] [27]
The optical format is approximately the diagonal length of the sensor multiplied by 3/2. The result is expressed in inches and is usually (but not always) rounded to a convenient fraction. For instance, a 6.4x4.8 mm sensor has a diagonal of 8.0 mm and therefore an optical format of 8.0*3/2 = 12 mm, which is expressed as 1 ⁄ 2 inch in imperial ...
Sensor size (Diagonal) Unit cell size Sensitivity (typical value F5.6) Sensor saturation signal (minimum value) Output Subpixel layout Release Date ICX249 [1] 752 x 582 0.44 MP 8.0 mm 1/2" 8.6 μm x 8.3 μm 1100 mV 900 mV Adjacent field line sums Cy Ye G Mg about 1999 ICX445 [2] [3] 1296 x 966 1.25 MP 6.0 mm 1/3" 3.75 μm² 460 mV 350 mV
A 50 mm (focal length) lens on an APS-C image sensor format (crop factor 1.6) images a slightly smaller field of view than a 70 mm lens on a 35 mm sensor format camera (full frame sensor). A 80 mm lens (1.6 × 50 mm = 80 mm) with a full frame camera gives the same field of view as this 50 mm lens and APS-C sensor format combination produces.
While there were larger CCD sensors made for interchangeable-lens cameras, such as the Leica M9, CCD sensors in fixed-lens cameras maxed out at 2/3″ (1/1.5″). Premium compact cameras of the time contained sensors around 1/1.7″ in size, whereas entry-level models used 1/2.3″ sensors or smaller.
The latest Leica Leitz and Sharp Aquos R series phones do qualify because, despite using only 94% [b] of their 1.0-type sensors [2] [3] (with 4:3 aspect ratio), they maintain the same crop factor (2.7) and diagonal (1″) as a 1.0-type sensor with 3:2 aspect ratio, since that is the image circle for which their lenses were originally designed.
A computer file format for coloured images, restricted to 256 colours and useful for small file-size. [8] GN: Guide number. A value indicating the power of an electronic flash apparatus, and used to estimate exposure. GN = distance × f-number. One needs to specify the film or sensor ISO speed, and it is conventional to quote for ISO 100/21°.
Both the F200EXR and the S200EXR use the same 12 Megapixel 1/1.6" size sensor while the F70EXR and F80EXR use a 10 Megapixel and 12 Megapixel 1/2" sensor respectively. In 2010, Fujifilm released its final cameras with the Super CCD sensor, the F300EXR and the Z800EXR. Both use the same 1/2" 12 Megapixel SuperCCD EXR sensor with hybrid autofocus ...