One thing to consider is that the 200mm f/2 lens works VERY well on an APS-C camera body at things like track meets, football games, and so on, and functions as a 320mm f/2.0 focal length equivalent on a 1.6x Canon body. HERE are some actual samples of a 200mm f/2 lens, from a 12 year-old Nikon D2x camera. ISO levels were 200 to 500, to 640, on a sensor that's not that good. The sports shots are mostly full-frame, 12 megapixel D2x camera,down-sized at 200 ppi, 8 inches on the long axis, and sharpened HARD, to be printed on newsprint. That was my paper's basic For Print image processing routine. 200ppi, 8 inches tall or wide, and sharpened HARD, like 2.0 pixel radius, and the blacks set so they would not ink down too much.
Runner: Nikon D2x ISO 640, f/2.5 at 1/750 second, ISO 640 April 2006, FOR NEWSPRINT
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Close-up portrait for profile on this excellent athlete. Nikon D2x 1/750 f/3.2 ISO 500 200mm VR lens FOR NEWSPRINT. April, 2006.
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Female distance runner from Oregon City: Uncropped, this is the issue at 20 feet with a 200mm lens...you MUST choose what to include. This is a full-frame capture. 1/1250 f/2.5 ISO 500, 200mm VR lens, Nikon D2x, April 2006. FOR NEWSPRINT
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September, 2006, Nikon D2x 12.2 MP camera 1/250 sec with 1/8 power fill-in flash, f/2.5 ISO 200, 200VR, Sept 2006 . Web sharpening.