Lightdow 420-800mm f/8.3 Manual Zoom Super Telephoto Lens + T-Mount for Canon EOS Rebel T3 T3i T4i T5 T5i T6 T6i T6s T7…

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User Instruction: This is a MANUAL lens, no electronic contacts, that’s why your camera will not recognize the lens, it requires full manual settings on camera & lens body., please switch to MF MODE in order to use this lens correctly. Tips to use Manual Lens: 1) Set the mode dial to Manual (M); 2) Set the Release w/o Lens option in the camera menu to Enable; 3) Set the Shutter lock option in the camera menu to Off: no lens.
Fine tune the front focusing ring to make subject in-focus and take a sample picture. If the picture turns out dark, take the following steps to improve, 1. Lower the shutter speed, from 1/500s down to 1/100s or slower 1/50 etc; 2. Raise the ISO Number, from ISO 100 to ISO 200/400/800 etc; 3. Use a remote shutter release and tripod to increase image stability; 4. Switch position to allow more environmental light coming through the lens into the camera imaging sensor.
Multi coated low-dispersion glass, anti-reflection coating, manual focus telephoto zoom lens to use with DSLR SLR cameras.
ADVANCED OPTICS / SUPER ZOOM / SOLID FULL METAL CONSTRUCTION / MANUAL FOCUSING
420-800mm f/8.3-16 Manual Telephoto Zoom Lens for Canon EOS Rebel T7, T7i, T6, T6i, T5, T5i, SL2, 80D, 77D, 700D, 70D, 60D, 50D, 5D, 6D, 7D, 600D, 550D, 200D, 150D, 100D, 1300D, 1400D, 1500D etc