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07-22-2017, 08:00 AM   #1
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Sony Medium Format Lenses for use with Curved Sensor

Some additional info on the five Sony medium format lenses for the Sony curved sensor camera - sonyalpharumors sonyalpharumors

07-22-2017, 08:07 AM   #2
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Interesting, thanks.
Well, that is going to require some updates to the classical lens design software
07-22-2017, 11:06 AM   #3
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Fascinating! But the dimensions make absolutely no sense.

That "387 mm" lens has a rear element that's 130 mm (5 inches!) in diameter and a length of 679 mm (over 2 feet!).

I'd bet that Sony is obfuscating the intended format and that every number should be divided something like 4 to 10.
07-23-2017, 07:42 AM   #4
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Cox in "Photographic Optics" ( my version is of 1974),
gives a good description of it, showing the concept of a film plate as a "spherical cap" with "astigmatic surface".
where the diameter of the sphere is related to the Petzval number.
He gives diagrams of simple lenses - Cooke triplet and -simple Petzval double meniscus.


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