Applies to: CanonEF-S 17-85mm f/4.5-5.6 IS USM
CanonEF-S18-135mm IS or IS STM,,,Not suitable for 18-135mm IS USM
Format: Bayonet can be reversed
![](https://img.alicdn.com/imgextra/i4/39263127/O1CN01jAge151YyD0DDUnHd_!!39263127.jpg)
![](https://img.alicdn.com/imgextra/i1/39263127/O1CN01dRvwBa1YyD0EbN6Xv_!!39263127.jpg)
![](https://img.alicdn.com/imgextra/i2/39263127/O1CN01jwQFr51YyD0DDY9Bk_!!39263127.jpg)
![](https://img.alicdn.com/imgextra/i1/39263127/O1CN01OEAKHk1YyD0EbMALI_!!39263127.jpg)
![](https://img.alicdn.com/imgextra/i1/39263127/O1CN01CC9UxU1YyD0CNqkEE_!!39263127.jpg)
![](https://img.alicdn.com/imgextra/i1/39263127/O1CN01D5a8lK1YyD0CNrx4B_!!39263127.jpg)
![](https://img.alicdn.com/imgextra/i3/39263127/O1CN019XMt9G1YyD0ELQolB_!!39263127.jpg)
![](https://img.alicdn.com/imgextra/i4/39263127/O1CN01HkZVCg1YyD0DDYDMV_!!39263127.jpg)
![](https://img.alicdn.com/imgextra/i2/39263127/O1CN01jt28MH1YyD0DMU0gL_!!39263127.jpg)
![](https://img.alicdn.com/imgextra/i1/39263127/O1CN01p9R3IS1YyD0CTtYhX_!!39263127.jpg)
![](https://img.alicdn.com/imgextra/i1/39263127/O1CN01Cr9SlX1YyD0EvJ3Lg_!!39263127.jpg)
The role of the hood:
The lens hood is a common photographic accessory that is put on the front of the camera lens. It has a variety of textures such as metal, hard plastic, and soft rubber. It has the following functions:
1. It can prevent the entry of non-imaging light and avoid fog when shooting in backlight, side light or flash photography.
2. It can avoid the surrounding scattered light from entering the lens when taking photos with forward light and side light.
3. In lighting photography or night photography, it can prevent the surrounding interference light from entering the lens.
4. It can prevent accidental damage to the lens, and it can also prevent fingers from touching the surface of the lens by mistake. It can also shield the lens from wind, sand, rain and snow to some extent.