dwweiche wrote:
Boy, I\'m really missing something or I\'m just plain dense, but if I understand correctly, if you don\'t have enough light and need to let in more than is possible by setting 3200 - f2.8 - 1/100, then fps goes from 8 to 4.
The examples cited on when you want high fps at high ISO were birds in flight at sunset and night motorsports.
And 1/100 will get you sharp pictures in those situations? You must be quite good at panning, because even PetKal probably can\'t do that
OK, try ISO 6400 at 1/400 at f2? How about ISO 12800 at 1/800 at F2.8? How about ISO 6400 at 1/200 at f4? All of these are possible uses. None of these are possible at full frame rate with this camera in normal view mode.
The 40d will do 6.5 fps in light that is less than proper exposure at 3200 1/100 2.8 , the 20D will do 5 fps, the 7D goes from being able to do 8 fps to somewhere around 4 fps. So not only does the 7D not do its best, it doesn\'t even do the best a 20D will in that light condition. Make sense?
Why does the higher FPS count? It matters when you are trying to track an object that is changing in focus or in position and the chances of getting a good shot go up with the number of frames shot. Sometimes birds will stay put and not move until these lousy lighting conditions happen.
Oct 14, 2009 at 11:27 PM
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