Canon 80D + Canon EF 70-200mm f/4L USM. Another walk at Bellevue Park.

[Chako]

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[Chako]

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[Chako]

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[Chako]

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[Chako]

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[Chako]

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[Vidar]

Getting those flyers too now I see

[Chako]

320mm is far easier to use than 1280mm. 

I must say, the servo focus/ai focus on the 80D is rather good, and when set to the highest shutter speed level, I get 2 photos per shutter press. So the 70-200mm f4L is a good fit on the camera. I haven't tried my Sigma 50-500mm yet...but the low weight of the RF 800mm on the tiny R100 is hard to beat...just not for birds in flight photos.