LensCoat Lens Covers...
Moving a big white (or black) lens near skittish wildlife is like waving your arms a sure way to flush your subject and ruin what could be a once-in-a-lifetime photo opportunity. LensCoat Lens Covers mask your 50 mm to 500 mm lens, giving you a better chance at getting the shot.
LensCoat Lens Covers are manufactured from 100% closed-cell neoprene, offering protection from bumps, jars and nicks, with a camouflage-pattern fabric cover. LensCoat Lens Covers also provide a thermal barrier, protecting your hands from cold lenses in lower temperatures. They are easy to install and remove, leaving no residue on the lens. And LensCoat lens covers are waterproof, providing protection in harsh conditions.
Other features include a clear, flexible UV-PVC window over the AF/IS/VR controls and the distance-scale window. The LensCoat also features custom holes that reveal the red-dot for easy alignment to the camera body without removing the cover.
LensCoat for the Sigma 50-500:
LensCoat Sigma 50-500 telephoto lens cover offers your valuable equipment some protection from scrapes and bumps, preserving its resale value. It also helps break up the shape of your lens, making it less noticeable to wildlife.
The LensCoat Sigma 50-500 features a clear plastic windows over the auto focus controls and also the distance scale.