Lightdow 420-800mm f/8.3 Super Telephoto Lens with T-Mount for Canon EOS DSLR Cameras - White - LD-100259-CNE

• Warm Tips: This is a FULL Manual Lens, NO Electronic Contacts, your camera will not detect the lens when mounted, please switch to MF MODE in order to use this lens correctly. Tips to use our Manual Lens: 1) Attach the lenses with T-ring adaper. 2) Set the mode dial to Manual (M). 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. Not for Canon Mirrorless 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 T8i, Canon EOS Rebel T7i T7, Canon EOS Rebel T6i T6, Canon EOS Rebel T5i T5, Canon EOS Rebel T4i T4, Canon EOS Rebel T3i T3, Canon EOS Rebel T2i T2, Canon EOS Rebel 90D 80D 70D 60D 50D, Canon EOS Rebel 850D 800D 600D 550D 500D, Canon EOS Rebel 4000D 2000D 1300D 1200D etc