CanonRF100-400mm F5.6-8 is USM Black

Took this on vacation recently. While it's a little bulky (expected), it's lightweight, easy to use, works great. The image quality, image stabilization, and both auto-focus and manual focus are excellent. Everything works smoothly. Great option for any of Canon's APS-C mirrorless R series cameras. I believe it works on the full-frame versions too, but with a cropped image size since it's designed for the APS-C models.

This lens is really great at this price point. It is light weight and sharp. Paired with a crop sensor camera body, it gives an effective focal length of 640mm. Its small size and light weight make it a great travel lens. In my experience, it focuses much faster than similar third-party lenses. Don't think twice about getting this lens, just do it!

I bought this lens to go with my new Canon R7. Or maybe I bought the R7 to go with this lens? I really wanted a lighter weight lens and camera for carrying with me when hiking or birding. My 6d / 100-400mm F4-5.6 IS L (Mark 1) was too heavy to carry around my neck for hours. I got a Sony RX10 mark IV bridge camera which was a great size and weight, but the picture quality was not as good as I wanted. This lens and body combo is hopefully the answer to my problems.The lens itself is pretty impressive in terms of its length and weight. Sure, I wish it were shorter, but for 400mm, I can't really complain. I also wish it had a wider aperture, but for the lower price and weight, that is obviously the compromise you have to make. The sensor noise performance of the R7 eliminates some of the downside of the slow lens, but it can't help create the nice background blur that a fast lens will have.The image stabilization combo of the lens and body works exceptionally well. I have been getting sharp shots at 400mm with 1/250s handheld with my shaky hands. Images look crisp to me and autofocus is very fast and quiet.One thing I have not gotten used to is the zoom ring works backwards from every other lens I have. Maybe someday I will get used to it, but for now, every time I try to use it I start with rotating it the wrong way. On the plus side, there is no zoom creep when I am walking around with this lens around my neck. There is a lock where you can fix it at 100mm, but I have never had to use it.I am a little disappointed there is no weather sealing on this lens. I'd have paid a little more to have some basic weather sealing on it as I don't want to have to worry about using it in mist or rain.I'm not taking any stars off for those items that disappoint me about this lens as they are either compromises for size and weight, or were known limitations when I bought the lens and not a surprise. Overall, 5 stars as I am very happy carrying this lens around for hours taking bird photos.

The RF100-400 Zoom is a great performing telephoto zoom. It does everything well for a modest price. It focuses very fast. It handles very well. Its plastic construction keeps the weight down. The lens produces super sharp images that rival Canon ‘L’ zoom lenses. Drop a plastic lens on concrete and it is trashed. Drop a Canon ‘L’ lens on concrete it will be trashed too.

Use this on an r5, pretty slow to autofocus, poor light visibility. However I would recommend it based on the price, I think it’s a good value. It is really sharp when you have good weather and the picture quality is comparable to higher cost versions. The build quality isn’t the best, it’s plastic and not weather protected but because of it it is really light so you’ll be more likely to bring it with you. And the price too may make you less worried about when to use it..it’s a good functional part of your kit and it can be fun to zoom around that much and see wildlife closer

This is so fun to use. I’m a very beginner but knew I wanted some extra reach over the kit lens on my r6 mk ii. I shot some wildlife and my best girl pup. I had a blast using this. I think the image quality is just fine. I had zero problems with the higher f stops. I’m sure someone more experienced than me can take a lot better pictures than me with this lens, but I will say I am very happy with the quality. I tried it on the full moon as well. Not exactly telescope level but it’s pretty cool. Had to crop in on the moon and you know what that means. Get this lens and don’t worry that you didn’t pay like $2000 more for some white lens. Just have fun.

Great product. Great quality at an affordable price.

I am a professional photographer, but didn't really "need" this lens for my daily work. I was just enjoying photographing birds and this was a "cheap-by-lens-standards" impulse buy.The lens surprised me, and I've been impressed by it. I was worried about f/8 at the long end, but the compression at 400mm still allows for the semi-shallow focus look. It's harder to get a great image when the light is low, and performs best on a sunny day. I've paired it with a Canon R5, so at least the sensor does well at a higher ISO. At first I thought the AF was a little sluggish, but I think it might've been my own user error, had good luck with eye AF settings, able to grab focus on little, erratic birds.The lens is SUPER light, which I love. The lack of weather sealing worries me, I live in Hawaii-it is humid- but I toss it in a dehumidifier box after a misty day. If I continue with bird photography and actually sell images I'd probably invest in the 100-500, but for now, this is a great lens to play with.