E-mount for Nikon MILC, good idea or not?

Started Sep 23, 2017 | Polls thread
cosmicnode Veteran Member • Posts: 3,030
Re: E-mount for Nikon MILC, good idea or not?

bobn2 wrote:

Antonio G wrote:

One of the problems a lot of people points out against the use of the F-mount in future mirrorless models is the lens throat diameter that prevents designing/using the ultra-fast aperture lenses and the E-mount wouldn't bring any advantage there as it shows just 2mm more and still far from other competitors.

It's not just the diameter of the mount, it's the register. The E-mount has a register of 18mm whilst the F mount is 46.5mm. It means that the E-mount straddles the exit cone from the lens where it is much narrower, therefore the mount can be narrower. That being said, the F-mount can go down to f/1.2, and there haven't been many faster lenses at FF.

You have this back to front the actual distance from the rear of a Sony lens to the sensor is approx 12mm taking into account the thickness the lens protrudes into the mount. this makes it harder to cover the sensor than the similar F mount with a 47mm registration distance where you can have a larger cone . Think of it like this, the largest opening in the lens barrel can be about 39mm, move this even closer to the sensor until it is touching and you eliminate the sensor corners completely from the exit cone.

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