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Forum: Pentax Mirrorless Cameras 09-06-2016, 07:22 PM  
The next Q model sensor
Posted By lytrytyr
Replies: 43
Views: 12,037
The Q7 frame has a 9.5mm diagonal.

"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 brings a result approximately 1.5 times the length of the diagonal of the sensor. This "optical format" measure goes back to the way image sizes of video cameras used until the late 1980s were expressed, referring to the outside diameter of the glass envelope of the video camera tube."

From: Image sensor format - Wikipedia, the free encyclopedia
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