Common skin warts (also called cutaneous warts) are raised round or oval growths. A wart may be lighter or darker than the skin around it. Some warts may have tiny black dots in them, often called seeds. The dots are small, clotted blood vessels. Warts may occur alone or in larger groups that merge and form patches.
According to Canon (link):  Canon addressed the âfeedback loopâ in later model IS lenses by introducing an algorithm to the IS detection system to automatically recognise when the lens is mounted to a tripod.
The Canon 18-135mm STM is a great do-everything lens with effortlessly silent and extremely fast autofocusing. The older 18-135mm EF-S IS lens was the only lens I needed to shoot everything for two weeks in Maui in 2010.With this one lens on a Canon 1.6x camera, you're done.he Canon 18-135mm STM is built with pretty decent amateur construction. The exterior is all plastic (except for the mount), but it's high-quality, tough plastic that seems like it ought to take a pretty decent beating. This lens seems like it ought to last a while.