Sensor Sizes and their Calculations?

Started Nov 7, 2012 | Discussions thread
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peterharvey
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Sensor Sizes and their Calculations?
Nov 7, 2012

I am confused.

If the Sony RX100 has a sensor size of 13.2 x 8.8 mm, then how does it have a 1" sensor?

Using Pythagoras Theorem, I can't see how the Sony RX100 could have a diagonal length of 1"/25.4 mm???

Likewise, how is a Canon G1X at 18.7 x 14 mm, classified as a 1.5" sensor?



 peterharvey's gear list:peterharvey's gear list
Sony RX100 Canon EOS 70D Canon EF-S 10-22mm f/3.5-4.5 USM Canon EF-S 17-55mm f/2.8 IS USM Canon EF 100mm f/2.8 Macro USM +4 more
Sony RX100
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