![]() 21 cross-type AF points in the central area of the 61-point sensor are functional with maximum apertures as small as f/5.6 None (zero) of the cross-type points on the EOS-1D Mark IV are functional as cross-type sensors at maximum apertures smaller than f/4.The level of AF precision for 5 of the central area AF points on the 61-point sensor (i.e., the dual X-shaped cross-type points) is superior to the level of precision for any of the AF points on the 1D Mark IV.The overall AF detection speed of the EOS 5D Mark III is superior to the AF detection speed of the EOS-1D Mark IV. The overall AF system speed of the EOS-1D X including lens drive is superior to that of the EOS-1D Mark IV on a lens for lens basis.What benefits does the new system bring in terms of speed and precision in this application?ĬW: The number and distribution of high-precision cross-type AF points has increased on the new 61-point AF system relative to the 45-point AF system used by the EOS-1D Mark IV. In this case photographer often uses center point with a fixed number of expansion points, as opposed to color-tracking or automatic AF point/area selection given the erratic nature of the subject. ![]() ![]() AH: The current AF system in EOS 1D Mark IV delivers excellent performance when photographing subjects like birds in flight against a varied background. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. Archives
February 2023
Categories |