RF 100-400mm f/5.6-I IS USM Telephoto Zoom Lens for Canon RF Mount Cameras - Black

This lens has really allowed me to expand my photography. It takes wonderful pictures and has incredible capabilities. I haven’t enjoyed in previous lenses. This was a great upgrade!

Works as it should. I use it for nature photography and so far so good.

Good alternative telephoto to the L lens. Fast RF focusing. Light weight. Good image quality at ISO 500 and below. Above 500 is satisfactory. 160-640mm when crop in 1.6 on R5 and R6. Good feel until you turn the zoom ring. It's no L lens. f/8 is a big factor.

Finally, an affordable entry level telephoto lens for Canon's RF line of lenses! As someone who has been wanting to reach out further than 200mm, this was right up my alley and I can so far my expectations have been met. Paired with the Canon EOS R, the lens does a pretty solid job of tracking and focusing in on subjects and the image quality you get is fantastic. Even with the F-stop reaching as low as 8 (when extended out to 400mm) there is some nice bokeh when the subject is further away from a background which works really great with bird photography which is likely what you'll be using this lens primarily for. Really an overall solid piece of glass that's worth adding to your kit.

Awesome lens for outdoor pictures, gives options without changing lenses

I own the Canon 100-400 EF IS II and thought I would give this a try because it is so much lighter. WOW is this lens sharp and light. Image quality is right there with the more expensive version. As long as you do not need weather sealing or a metal lens body that can take punishment... this is the lens to buy. We just came back from Orlando and here are a few pictures from Sea World with the lens... amazing value.

This lens works great with the Canon R6. It has very fast focus and is sharp. I tested it by shooting small birds in flight and it didn't disappoint. I look forward to getting out on the trail with this very little weight, far reaching lens. This is a plastic lens, so don't be surprised and has no water and dust proofing. Canon even cheaps out and doesn't include the lens hood. I bought a third party hood that works just fine.

This 100 to 400 lens is very lightweight and compact. For shooting nature and Wildlife it is enjoyable to carry and for me a much better choice than the larger and way more expensive 100 to 500 mm. The times I enjoy the lighter weight and smaller size and great image quality of this lens over the larger and heavier lens is way more often than the times I need that extra 100mm. Also I'm often backing out the zoom to 250 to 350mm to get the best composition anyway. I think it's the best value medium range telephoto lens out there for the Canon R5 and R6 and rf mount cameras. It's less than 25% the cost of that larger telephoto. It's on my R6 everyday and I'm enjoying it very much!