What are the most commonly used filters for SLR cameras? Mainly shooting life portraits and tourist scenery. Does the filter work well? What kind of Canon 600D is more suitable?

Commonly used filters are uv mirror, nd mirror, gradient mirror and cpl.

The main function of uv mirror in the digital age is to protect the lens.

Nd mirror is used to reduce the amount of light entering, which is very useful when slow door shooting is needed during the day.

Gradient mirror is used to solve the problem of large light ratio, which can expose high light and dark light correctly at the same time.

Cpl can eliminate the reflection of water and glass and make the sky bluer.

Others include color filters, starlight mirrors, etc. And the frequency of use is not as good as the above.

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It is not recommended to buy and use dozens of filters. Originally, the lens is a very precise optical structure. Adding a glass or branch filter in front will definitely affect the imaging. High-end filters can also minimize this effect, but low-end filters have a greater impact on imaging, and some inferior products will also affect focusing.

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In fact, you don't need to buy an ultraviolet lens for your lens group. You buy thousands of high-grade uv lenses, which are similar to yours. Not worth it. Buying a low-grade uv mirror also affects imaging. The original image of 18- 135 is average, and it is even more meaningless to drop it. The filter for other effects depends on whether you need it or not.

If you must buy it, buy a Kengo uv mirror with a price of 100. You can put it in your camera bag when you don't use it. When it rains or goes to the seaside, install protective glasses temporarily.

If you want to buy it, just buy a filter with the same caliber as your lens. 18- 135 The lens is 67mm.