Kenko Tokina updates 400mm mirror lens with better coatings

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A new version of Kenko's 400mm mirror lens is to be released this month that is said to feature better anti-reflective coatings for improved flare performance. The Mirror Lens 400mm F8 N ll uses six elements in two groups and has a fixed F8 aperture. The closest focus distance is 1.5m/59in and the forward filter thread is 67mm while the rear takes a 30.5mm. The lens is designed for full frame sensors but also comes in a longer version for mirrorless bodies. As it uses a T-mount, the lens ...
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