Reasons why no Nikon 85mm f1.2?

Started Apr 11, 2013 | Discussions thread
Grevture Veteran Member • Posts: 4,187
Re: Didn't anyone tell you f/1.2 not possible for CX mount? -nt

whoosh1 wrote:

No text.

Maybe, just maybe, it is because the CX mount have a significantly more design friendly diameter-to-sensor-size ratio?

As many has noted over the years since the 1 cameras were first introduced, the CX mount is very, very large in proportion to the sensor size. To a degree that we have had frequent speculations whether it actually could accommodate also a APS-C sized sensor. This is why (also modern) the Sony E mount is so big in relation to the APS-C sensor size - in fact so big E mount even can be used for full frame sensors. A larger lens mount generally makes the lens design a whole lot easier.

The F mount is a bit narrow in relation to a FX sensor size. That was a design decision made some 65 years ago that probably has frustrated many lens designers at Nikon over the years. It does make certain lens designs a lot harder then it would had been with a wider lens mount.

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