Check the function of the uv mirror by yourself. But in my eyes, it only has one function, which is to protect the lens. Don't listen to the function introduction of those arrogant and vain heads. Don't be greedy and cheap. Poor uv mirror has low transmittance and poor backlight.

2. Put on the hood.

The function of the hood is not only anti-glare. Another point is to protect the lens. Can prevent foreign objects from scratching the lens. It's basically standard for lenses. Just buckle it on the mirror when not in use. Easy to use and convenient.

3. Clean the lens regularly.

Cleaning accessories such as hair dryer and lens pen. Regularly clean the dust on the lens, its edges and the mirror body. Can also be wiped with lens paper, mirror cloth and other items.

One last word. In fact, the outer lens of the lens is really not so fragile. Improper use and maintenance will cause scratches or abrasions.

I don't need ultraviolet glasses at all now. Cheap is asking for trouble. If you really want it. Try to ensure that the uv mirror is about one tenth of the price of the lens. This is a reasonable purchase standard. For example, Canon 24-70f2.8lii is recommended to configure uv around 800 yuan. Otherwise, the red ring head of a garbage uv will affect the backlight ability, which is really not worth the candle.