FUJINON X-Mount Lenses

Started Aug 10, 2013 | Questions thread
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vkphoto
vkphoto Senior Member • Posts: 1,632
R = aperture ring on the lens

$$Policy$$ wrote:

Can someone explain the "R" designation on the majority of X-Mount lenses? Thanks!

"The "R" stands for "Radius Angle" and refers to the Aperture Blade design on the Fujinon XF lenses. XF Lenses' diaphragm blades have the radius finely adjusted to ensure the opening is close to a true circle at all aperture settings"

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