Technique tip: handling lenses
It is common sense to handle a lens carefully. But some things that will
not damage the glass in a lens can damage the much more delicate anti
reflection coating on the exposed front and rear elements.
1. Always place a lens cap over the front of the lens when not actually
2. Add a cap over the rear of the lens whenever it is removed from the
camera, even if it is to be kept in a lens case.
3. Use a lens shade on the front of the lens during all picture taking;
in addition to eliminating glare, it can act as a shock absorber against
4. Clean lens surfaces by blowing dust off, or by using a very soft,
clean brush; do not rub or polish a surface with cloth or lens tissue.
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