When shooting in 1/8000s of a high speed object (eg fan blades), the shallow edges will show jaggies too. In a nutshell, someone told me that the electronic shutter will throw away resolution so as to gain speed, the CCD actually 'interlines', or something like that. Sorry, I am a lousy tech user here lar, dunno how to explain. :bsmilie:
1/4000s can already let you capture someone hitting a cricklet ball with the bat with reasonable stillness already. Good enough for me. Pretty hard to get enough natural light with 1/8000 @ ISO 200 anyway even with f2.8 (forget about lens sweet spot for max sharpness, then you use ISO 800 and higher negates the quality factor).
1/4000s can already let you capture someone hitting a cricklet ball with the bat with reasonable stillness already. Good enough for me. Pretty hard to get enough natural light with 1/8000 @ ISO 200 anyway even with f2.8 (forget about lens sweet spot for max sharpness, then you use ISO 800 and higher negates the quality factor).