Maximum T2 aperture for low-light advantage, deeper depth of field, and increased area of focus
Cinema industry-standard 0.8 MOD focus and iris gears compatible with follow focus and iris controls
Lens construction of 9 elements in 7 groups for smooth, circular bokeh
Manually focus on objects as close as 11" away.Markings in meters and feet.64° angle of view
Compatible for Sony A7 Series :A7、 A7R, A7S、 A7II、 A7RII、A7S II、A9、 A7RlII、A7lII 、A7RIV、A9 II、 A7SIII, A7C、A1;For Sony FS series: FS5, FS7,FS7M2,FS5M2K; For Sony A series: A3000, A5000, A5100, A5100L, A6000, A6000L, A6300,A6400, A6500, A6600; For Sony NEX series: Nex-3. Nex-3n, Nex-3r, Nex-C3, nex-F3k, Nex-5, Nex-5k, Nex-5A, NeX-5n, Nex-5t, NeX-5r, NeX-6, NeX-7

 
 
Product description
 
 
 
 
 
 
 
 High resolution images,supports 35mm full-frame sensors 
 
 Newly designed optical and mechanical structure to achieve hight resolution images in hight quality ED, hight refractive index glass combination to ensure rich picture detail,effective reduction of color shift,and more artistic image rendering. 
 
 
 
 Subtle breathing effect 
 
 In the design process of the lens group,while ensureing the lens size,wieght,image quanlity and othere foctors,the breathing effect has been greatly optimized. 
 
 
 
 T2.0 large aperture soft and natureal bokeh images 
 
 The "Spectrum" series offers a maximum aperture T2.0, minimum aperture T16(35MM minimum aperture T22) constant aperture,the amount of light intake always remains constant,shooting bright images in low-light conditions 10 aperture blades (50mm 12 blades) to create a soft bokeh and natural focus trnsition the picture is vivid and not hard. 
 
 
 
 
 
 
 
 
 
 Uniform color balance 
 
 The whole series of lenses have a uniform color balance,so after changing lenses or switching between different materials still have uniform color,reducing post-processing pressure. 
 
 
 
 310 ultra-long focusing stroke more precise and fine 
 
 Infinitely focuse gear design,ultra-long 310 focusing stroke,can be adapted to a variety of follow focus,to ensure accurate focus during shooting, more delicate focus movement,in line with the requirements of professionals on focus performance. 
 
 (270 focusing stroke for 50mm/85mm) 
 
 
 
 Simple and more convenient operation 
 
 The whole series has a uniform gear position and front lens aperture, so there is no need to adjust the position and other accessories too much after changing the lens.