Good Image Presentation: With sophisticated achromatic refractoscope design results in M manual exposure mode for images with well controlled peak contrast and flare. Telephoto Use: The 500mm f/6.3 ultra long zoom lens is a telephoto lens that can effectively eliminate chromatic refraction, good for shooting birds and wildlife, as well as ultra long range shooting. Accurate Scale: The manual focus design is complemented by a depth of field and distance scale for easy use of prefocus technology to deliver , images. Optical Design: 4 optical structures in 4 groups, multi layer MC coating can suppress lens spot and ghosting, improve contrast and color realism. Compatibility: When used with the included T2 NEX mount adapter, the prime telephoto lens can be used with specific full frame mirrorless cameras.