The ET-74B fits two specific Canon lenses
Before you buy the Canon ET-74B, check your lens name. This hood is compatible with only two models: the Canon EF 70-300mm f/4-5.6 IS II USM and the Canon RF 100-400mm F5.6-8 IS USM. If your lens isn’t one of those, the ET-74B is not the right hood for you.
For owners of either lens, the ET-74B is a straightforward accessory: it blocks stray light to reduce glare and lens flare, and it adds a layer of protection against accidental bumps and scratches. The hood is made of durable plastic and is lightweight, so it won’t weigh down your bag.
What the ET-74B does for your lens
- Canon Lens Hood ET-74B (for Canon EF 70-300mm f/4-5.6 IS II USM lens & RF 100-400mm F5.6-8 IS USM lens): Compatible with the Canon EF 70-300mm f/4-5.6 IS II USM lens and Canon RF 100-400mm F5.6-8 IS USM lens. This is the key compatibility check—if your lens isn’t listed, the hood won’t fit.
Canon Lens Hood ET-74B (for Canon EF 70-300mm f/4-5.6 IS II USM lens & RF 100-400mm F5.6-8 IS USM lens) - Canon Lens Hood ET-74B (for Canon EF 70-300mm f/4-5.6 IS II USM lens & RF 100-400mm F5.6-8 IS USM lens): Blocks stray light from entering the lens and reduces unwanted reflections and glare. This is the main optical benefit, especially when shooting toward bright light sources.
- Canon Lens Hood ET-74B (for Canon EF 70-300mm f/4-5.6 IS II USM lens & RF 100-400mm F5.6-8 IS USM lens): Helps protect the lens from accidental bumps and scratches. A practical bonus that can save your front element from everyday knocks.
When to use a lens hood
A lens hood is most useful when you’re shooting in conditions with strong or directional light—outdoors on a sunny day, near windows, or anywhere stray light can hit the front element and cause flare or washed-out contrast. The ET-74B’s design blocks that light before it reaches the lens.
It’s also a good habit to leave the hood on when you’re walking around or storing your camera between shots, because it provides a physical buffer against bumps and scratches. The hood is easy to install and remove, so you can quickly adjust your setup as needed.
What the supplied information doesn’t tell you
The product record doesn’t specify whether the ET-74B can be reversed on the lens for storage, or whether it’s compatible with filters or other accessories. If those details matter to you, check with Canon or the retailer before buying. What we can confirm is the two-lens compatibility and the core benefits above.
How to decide
If you own the Canon EF 70-300mm f/4-5.6 IS II USM or the Canon RF 100-400mm F5.6-8 IS USM and want a lightweight, protective hood that reduces flare, the ET-74B is a sensible match. If you have a different lens, look for the hood model specified for that lens instead—the ET-74B won’t fit.
