Canon EF 500mm f/4.0L IS USM Q&As

Telephoto prime lens | Canon EF
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I want to get myself a 500mm lens, for wildlife/birds. I'm currently using a Tamron 100-400 on APS-C, and it's just not up to scratch. When I compare the IQ with pictures taken with my 135mm f/2 or 70-200 f/2.8, I'm more often than not disappointed.. I'm not sure however of what to do: 1. Get a used Canon mk1 Pros: "Cheap" option, 2-3K$ Cons: No longer serviced, heavy 2. Wait for Canon to release a RF 500mm f/4 and get a used mk2 Pros: Best IQ, "lightweight" Cons: Expensive option, 5-6K$...
By: Tannin (Jun 11, 2017)
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I'm considering buying a 400/2.8 IS II for birding. I am confident that it will be everything I want in low-light situations (rainforest and similar). I also still have my wonderful old 500/4 IS Mark I. (1) How does the 400/2.8 II compare to the Mark I 500/4 in the 500mm range? (Mark I 500/4 bare lens vs Mark II 400 with 1.4 for 560mm f/4.) (2) And how does it compare in the 700mm range? (Mark I 500 with 1.4 for 700/5.6 vs Mark II 400 with 2.0 for 800mm f/5.6.) I am particularly interested in...
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I have the 500mm F4 L IS Mk 1. After over 10 years of use the screw mechanism that holds the lens hood in place has become detached from the lens hood itself. An easy repair, but does anyone know the size and length of the two machine screws or bolts that hold the screw mechanism in place? They are of the cross head type and are accessed from inside the lens hood. Thanks Tim
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Hi I recently got a fd 500mm f4.5l lens, it is in bargain condition, with a few issues, but optically amazing! waiting to get that edmika adapter on there but for now I am using a albinar fd-eos converter that is working great!      so the BUILT IN HOOD was stuck, I have been working at pulling it out & last night I had a lot of success and got it to almost fully extend, I need to remove it to clean out the gunk that has built up inside the hood, seems to be paper or old tape,,, Before I...
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