Fringer EF-FX Ultra: Amazon
This adapter from Fringer will make your Canon EF24-70mm F/2.8 into an F/2 zoom for X-mount or turn any f/2.8 zoom into an f/2 zoom!
We are pleased to announce that Fringer EF-FX Ultra (FR-FX071) is released!
It is a focal reducer/speed booster version of the well-known Fringer EF-FX series, which adapts EF mount lenses to Fujifilm X cameras while keeping full-frame lenses’ optical performance as much as possible. It features a newly designed 2-group 5-element optic. Unlike some similar products in the market, the priority of the new design is image quality. To achieve this goal, we even sacrificed the magnification ratio a little bit, i.e., to about 0.74x. The new adapter has similar AF performance and compatibility as EF-FX Pro III.
Using this adapter, the focal length will be reduced and the aperture will be wider. For example, a EF24-70mm F/2.8 lens will become approximately 17-51mm F/2.0.