R5 detailed lens testing of RF 100-500 f4.5-7.1 vs. RF 800 f11, with & without RF 1.4x TC, for super-telephoto use.

AlanF

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Aug 16, 2012
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EricN

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Aug 10, 2021
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Single image. You would be pushed to get anything at 800mm on the 100-400 II, just not enough pixels - 40x40, and the lens isn't sharp enough. I got this at 900mm on the 100-500mm II + RF 1.4x, f/13.
View attachment 200288
I tried it on the 100-400 II with no extender. It's just enough to recognize Jupiter. I overexposed and got what looked like 4 moons. Then I went for Saturn and again, just enough to recognize.
 
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AlanF

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I tried it on the 100-400 II with no extender. It's just enough to recognize Jupiter. I overexposed and got what looked like 4 moons. Then I went for Saturn and again, just enough to recognize.
Just went out and tried the bare 100-500mm on the R5 and Saturn. Hand held at 1/250 and iso 3200. My first ever shot of Saturn.

309A5641-DxO_Saturn_500mm.jpg
 
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