I’ve been playing around with the new(ish) Canon EOS R10 camera since getting it last February. This week, I ordered and received a Canon RF100-400mm F5.6-8 IS USM telephoto lens. I tried it out today and got a few shots around the yard including the one above of a Mourning Dove and Cactus Wren perched atop one of the birdseed feeders out back. I was easily 30 feet from the birds when I took the photo. I am intend to use the new lens for wildlife and possibly astronomical photos. More on those as time marches on.
For my older Canon SL3 Camera, I have a good collection of lenses for various purposes, not the least of which is the Canon EF 100-400mm f/4.5-5.6L is II USM telephoto lens. Comparing the older telephoto to the new one, there are a couple of things worth noting:
- Weight: The old lens weighs in at 3 lb 10 oz, while the new lens is only 1 lb 8 oz.
- Length @ 400mm: old is 10.75 inches and new is 9.5 inches.
Using the old lens on the SL3 makes the camera very front-heavy and, while not absolutely necessary, could use a monopod or some other support for longer periods of use. The bigger lens has its own tripod mount. The new camera and lens aren’t noticeably as front-heavy and the weight doesn’t seem to be an issue when carrying it around.
So, I’ll report on any amazing things I encounter when using the new setup. Stay tuned.
As usual, you may click on the image above to view enlarged in a new tab or window.
Update 20260617 20:29 AZ time: Venus and the Moon in the western sky. Using the R10 and 400mm Lens . . .
