A couple of weeks ago I suffered a loss to my photography kit. My old telephoto 400mm lens’ autofocus motors died. This REALLY bugged me as it was right as baseball season was starting. It was also creeping into the warmer weather which is when I focus on wildlife photography. Pissed off and frustrated, I decided to go rent a new lens to handle an upcoming baseball game shoot. I’m glad I did.

When I went to my local camera/rental shop, I checked out the telephoto options and found that an RF mount lens was available. This meant I could use my Canon R5 C* for the long shots instead of my 1DX II*. The wonderful staff suggested the Canon 100-500mm RF telephoto lens and had high praise for it. I trust these guys, so I gave it a shot.

First impressions

WOW this lens is LIGHTWEIGHT. The size of this lens in its widest focal length is pretty compact at 8-inches. The build quality is great. It doesn’t feel cheap and has the Canon “L” designation for professional-grade build quality. It weighs roughly 3-pounds when holding it in your hands alone. Slap the lens onto a Canon mirrorless body and it’s barely noticeable in the short term.

Image quality

The image quality on this lens is UNBELIEVABLE. It’s such a sharp lens. I’m not sure what Canon has done, but the RF mount lenses are always sharp, but I was surprised at how sharp this telephoto lens is. It’s ridiculous. Having image stabilization built in is definitely helpful. When I shot the baseball game, I started out with the lens connected to my monopod. Just a force of habit. When shooting long focal lengths at 300mm or more, I stabilize my camera and lens with a monopod because you’re much more prone to capturing blurred images at those focal lengths. This is because micro jitters from you or your camera are magnified. Since the lens is so light, I boldly decided to try shooting handheld. Maaaaan did it workout perfectly for me. Again, the built-in image stabilization system in the lens helps a lot. The USM autofocus on this lens is snappy in all focal lengths. My only suggestion would be to make sure your mirrorless camera’s autofocus AI is set to “people” and face detection when shooting sports. I didn’t upload the highest resolution version of the pics below, but they’re still pretty stellar in quality.

Concerns

The weight of this lens is great. The size is “good.” When you zoom to a tighter focal length the lens telescopes to 11-inches. Unfortunately. I wish this wasn’t the case. It’s not a deal-breaker, but it’s something I wish was addressed for the price point. To Canon’s credit, the telescoping functionality can be manipulated to be a smooth, quick motion or your can make it a stiff motion. If you tighten down on the lens for a stiff motion, this will eliminate the inadvertent telescoping issue when you’re just walking around with the lens on your hip or shoulder.

The other concern is the aperture. At f/4.5-7.1, many would scoff. At f/5.6 is where most shooters would want to top out on aperture. But even at f/7.1 I found something magical happens with this lens. I really can’t explain it. You don’t lose as much light as expected. My friends at the local camera store said that Canon did something really right or really wrong, because they noticed the same performance. The folks at Digital Picture explains this technicality quite well. Over my head, but it definitely works. Let’s just say that f/7.1 at 500mm isn’t really f/7.1. And no, f/4.5 isn’t particularly wide open, but it’s adequate with today’s high ISO performance in cameras. The background compression looks great in all of my images regardless of the aperture.

You can get the 100-500mm RF lens from Canon for $2899, but at the time of writing this, the lens has a discount* going. I need to save up for this lens. I not only want it, I NEED it.

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