Canon R5 with EF 600mm L IS II and 2xIII

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Some Birds of Open Fields, early summer 2023
Canon R5 with Canon EF600mm f4 L IS II + 2xIII

I did virtually zero bird photography in 2022 and early 2023. I had a minor surgery in late May 2023 that kept me off the unicycle for a while. I eventually overcame the inertia and pulled out the camera a couple of times in late June and early July. I sure wish I had this rig when I was doing all my bird photography and traveling. Below are some characteristic birds of open fields and scrub in Central Ohio that are often seen along the bike trails I ride in the summer.

Common Yellowthroat
Canon EOS R5, Canon EF 600mm f4L IS II + 2xIII
f10, 1/800th sec., ISO 800

Bell's Vireo
Canon EOS R5, Canon EF 600mm f4L IS II + 2xIII
f11, 1/800th sec., ISO 800

Bell's Vireo
Canon EOS R5, Canon EF 600mm f4L IS II + 2xIII
f10, 1/1250th sec., ISO 800

Henslow's Sparrow
Canon EOS R5, Canon EF 600mm f4L IS II + 2xIII
f10, 1/1000th sec., ISO 800

Henslow's Sparrow
Canon EOS R5, Canon EF 600mm f4L IS II + 2xIII
f10, 1/1600th sec., ISO 800

Willow Flycatcher
Canon EOS R5, Canon EF 600mm f4L IS II + 2xIII
f10, 1/800th sec., ISO 800

Indigo Bunting
Canon EOS R5, Canon EF 600mm f4L IS II + 2xIII
f10, 1/500th sec., ISO 1600

Below are some Field Sparrows taken on Nov. 29, 2021 with the Canon R5 and 600II + 2x at the Deer Creek State Park soon after I got the lens. My old 800mm wouldn't focus properly on my R5. After 5 trips to Canon repair services I gave up on it and got an EF 600 f4 L IS II. It works perfectly on my R5.

Canon EOS R5, Canon EF 600mm f4L IS II + 2xIII
f10, 1/1250th sec., ISO 800

Canon EOS R5, Canon EF 600mm f4L IS II + 2xIII
f10, 1/1000th sec., ISO 800

Canon EOS R5, Canon EF 600mm f4L IS II + 2xIII
f10, 1/1250th sec., ISO 800

Canon EOS R5, Canon EF 600mm f4L IS II +2xIII
f10, 1/1250th sec., ISO 2500