Tokina Telephoto Mirror Lens SZ 900mm PRO Reflex F11 MF CF Sony Format Only Lightweight 725g Manual Focus E-mount APS-C

[Amazing super telephoto 900mm lens] A mirror lens for mirrorless cameras with a long telephoto of 900mm that cannot be achieved with refractive lenses [Successfully achieved overwhelming compactness through reflective optical system] By incorporating mirrors in front and behind the lens barrel, light is reflected twice inside the lens, which makes it significantly more compact than a refractive lens with the same focal length. Another attractive feature is that it is less prone to chromatic aberration due to its nature. [No chipping. True donut bokeh] One of the features of mirror lenses is the donut bokeh. The SZ PRO series achieves a beautiful circular donut bokeh by reducing vignetting due to the chipping of the donut bokeh. [270° focus ring allows for fine focus adjustments] The Tokina SZ PRO series has a 270° focus ring angle, which is very large for a typical camera lens. Fine focus adjustments are possible even with super telephoto shots with a shallow depth of field. [Product Specifications] Focal length: 900mm / Aperture: F11 (fixed) / Image circle: APS-C / Lens construction: 7 groups, 7 elements / Filter size: 86mm (front), 34mm (rear) / Angle of view: 1.8° (E, X), 1.7° (EF-M) / Minimum shooting distance: 2.61m / Maximum shooting magnification: 1/2.5 / Focus type: Manual / Body size: φ96.1 x 168mm / Weight (without hood): 725g / Mount: Sony E-mount