Features 1、High Aperture of F2.8: The F2.8 large aperture allows for increased light transmission, enhancing shutter speed, making it ideal for low light and night scenes, and creating better foreground or background blur. 2、Quality Optics: Utilizing premium multi coated optical glass design, 9 rounded aperture blades, and a 6 groups 6 pieces lens optical structure, the optical glass ensures minimal image distortion, excellent image clarity, contrast, and a minimum focusing distance of only 5 feet. 3、Focal Scale and Focus Ring: Equipped with a focal scale and a stable focus ring for easy use, this telephoto lens is perfect for long distance shooting, ideal for outdoor photography, portraits, and landscapes. 4、Compatibility: Compatible with both full frame and APS C format cameras, this manual lens features no electronic contacts, meaning the camera cannot detect the lens once mounted. 5、Compatible Cameras: Compatible with various digital SLR cameras such as for 80D, 70D, 60D, 60Da, 50D, 7D, 6D, 5D, 5DS, 1Ds, T6s, T6i, T5i, T5, T4i, T3i, T3, T2i, and SL1. Specification Item Type: Camera Telephoto Lens Material: Alloy, Optical Glass Weight: Approx. 539g/19.0oz Focal Length: 135mm Fixed Focus Aperture: f2.8 to f22 Image Format: Full Frame Minimum Focus Distance: 1.5m Optical Structure: 6 Pieces 6 Groups Maximum Magnification Ratio: 0.11 Aperture Blades: 9 Package List 1 x Lens 1 x Carrying Bag 1 x Instruction Manual