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Canon RF 24-105mm f/4L IS Aperture Series @ 105mm: View Past Bear Lake to Spire Peak

See my Canon mirrorless wishlist and Nikon mirrorless wishlist and Sony mirrorless wishlist and and .

This series evaluates performance of the Canon RF 24-105mm f/4L IS USM at 105mm on a far distance scene on the 30-megapixel Canon EOS R.

Canon RF 24-105mm f/4L IS Aperture Series @ 105mm: View Past Bear Lake to Spire Peak

Includes images up to full camera resolution from f/4 through f/8.

Below, this image is too blue, and was not processed with white balance as I later found to be quite unusual.

Below, Bear Lake lies hidden in the gorge near bottom at ~10200 feet. It is full of hungry trout, if you can get there. I reached it about an hour later. A few years earlier, I hiked to Spire Lake, which lies beneath Spire Peak (top, center). To my chagrin, I injured my left knee on this long and grueling hike (too much weight, too many miles, a nag became a limp) and it might be some time before it recover and I can hike such territory again.

View Past Bear Lake Gorge to Spire Peak
f8 @ 1/40 sec, ISO 100; 2018-10-13 14:27:56
Canon EOS R + Canon RF 24-105mm f/4L IS USM @ 105mm + polarizer Zeiss
ENV: Old mining road between Morgan Lakes and cutoff to Bear Lake, altitude 10500 ft / 3200 m, 50°F / 10°C
RAW: LACA corrected

[low-res image for bot]

James K writes:

The quality of the Canon RF 24-105/4L makes the photo looks like it was shot with an iPhone. You have been making some very nice artistic images lately (log dam in particular). You should always have the Zeiss Loxia 25/2.4 handy so that you will have some technically brilliant photos after all that hiking and physical effort.

DIGLLOYD: that's not quite fair—the Canon EOS R sensor is good for what it is (30MP) and looks good at ISO 100. But I’ll be damned if I’ll carry a camera that far and hard to get 30MP instead of 45MP, particularly with a dud lens.

Unfortunately I injured my knee badly by carrying a too-heavy pack with Canon EOS R and Nikon Z7 kits with various Zeiss Otus and Zeiss Milvus lenses ~12 miles that day, including up one steep and loose slope to Bear Lake where I think I mildly tweaked my left knee. No particular incident, just a slight tweak followed by a nagging irritation followed by over discomfort. By 9 PM when I finally reached my Mercedes Sprinter I was limping and the knee was swollen up badly. I am really bummed as I won’t be able to hike my favorite places for a good while probably (I’d be thrilled if it were only a 2-week downtime) as while the knee swelling has come down (prednisone accelerated that), it is still crunchy.

My points are twofold: (a) I am always evaluating new gear and there was no room for the Sony A7R III on that hike, and (2) I bit off more than I could chew: bad planning on timing as it was a 10.5 hour hike and I carried gear I didn’t have time to put to use (the Milvus and Otus and ZF.2 and ZE lenses). In the future, I’m going to take along the compact hanging scale I have in my garage for weighing bikes and such, and keep it in my van so I can hang and weigh my pack, and thus limit myself to a predetermined weight in order to cut the risk of such injuries down.

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