Venus Optics releases the a 10mm F4. for RF APS-C mirrorless camera

Venus Optics has released a very small walk around 10mm F4 for APS-C mirrorless.

Not quite a lens cap-sized lens but certainly small enough that with the grip protrusion on Canon's RF APS-C cameras, you'd never notice you had a lens attached.

Of course, this is a manual focus and manual aperture lens (which isn't much of a problem on a 10mm lens) and F4.

Instead of calling it a pancake lens, Laowa is branding this as a "cookie-sized".  If the MTF is accurate, this actually looks like a pretty good lens for $299.  You can purchase it here from Laowa's website.

Specifications

Element Design and MTF

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