Z White Paperow Canona:
1DM3:
"Predictive AF can track a subject approaching at about 31 mph up to about 26.2 ft. away with an EF300mm f/2.8LISUSM lens.
This is the same as with the EOS-1D MarkIIN. However, improvement in focusing detection performance enables subjecttracking at 10 fps."
400D
"The predictive AF calculation speed is the same as that of the Digital Rebel XT. With an EF300mm f/2.8L IS USM lens, the camera can focus track a moving subject approaching at 31 mph/50kph up to about 32.8 feet/10 meters away."
40D
"Compared to the EOS30D, the EOS40D ís focusing calculation speed is 1.3 times faster, and the AF data-processing time is shorter. Predictive AF can track a subject approaching at 50kph/31 mph up to about 26.2 ft./8m away with an EF 300mm f/2.8LISUSM lens. "
Czy nie oto chodzi ?