The AstrHori 6.5mm f/2 fisheye is a fully manual lens for APS-C Sony E, Fuji X, Nikon Z, Canon RF and Micro Four Thirds ...

We spent a full year testing nearly 40 X-mount lenses to figure out which ones make the most sense for Fujifilm shooters.

Canon says it's been designed to have minimal focus breathing, so that the field of view doesn't significantly change as you ...

In short, the smaller the focal length, the wider the angle of view and the more 'wide-angle' the lens. The larger the focal ...

This unique optical unit produces stunning video with a shallow depth of field even at fast apertures and is easier to focus ...

The F-number of a photographic lens is a measure of its light-gathering ability, and is expressed as its aperture diameter divided by its focal length. Lenses with low F-numbers are prized by ...

A 2″ eyepiece delivers a wider true field of view (the actual amount of sky visible ... circular opening in front of the eyepiece’s front (or field) lens. The bigger the field stop, the ...