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Fuji created a new way to measure the different mount qualities and Sony FE ends up last on their scale


Fuji created their own equation named “Value Angle” to measure the quality of a mount. In short: The Greater the value angle, the more precise and easier a lens can send light to the sensor. A wider value angle gives more flexibility for lens design and allows for more light and less digital correction.

The way Fuji measures it the Sony E-mount does fine for APS-C while it ends up last for Full Frame:

Now keep in mind this isn’t an industry standard way to measure things. It’s “only” Fuji’s way to measure a mount.

via Profitoto via Fujirumors

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