The 65-point all cross type AF sensor, as in the case 61-point high-density reticular AF sensor, requires a wide focusing light flux covering a wide focusing area in order to increase the number of cross-type AF point to 65, but the size of the beam depends on the lens. The incorporation of intelligent viewfinder II in EOS 7D Mark II have made it possible to display different AF points depending on the lens, and so the 65-pioint AF system can fully exploit the incoming beam available with each lens and optimize the AF points, types and focusing patterns for each type of lens.
The 65-point all cross type AF sensor provides a maximum of 65-point cross-type AF sensor for lens with f/5.6 or larger aperture. The cross-type AF points are widely distributed throughout the whole AF area. Even for lens combination with a maximum aperture of f/8, the AF sensor still provides cross-type AF sensor at center.
Distribution of AF sensor type
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f/2.8 compatible AF sensor (Offset Array)) |
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f/5.6 compatible AF sensor (Offset Array) |
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f/5.6 compatible AF sensor |
Lens maximum aperture and Cross-Type AF points
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Lenses and AF point types and distributions
The number of usable AF points on 65-point AF System will differ depending on the lens. The lenses are classified into 7 groups from A to G. When using a lens from Group F to H, fewer AF points will be usable. The camera only shows AF points and pattern that can be used with the lens currently attached in the Intelligent Viewfinder II. In addition, non cross-type points flash on and off during AF point selection in viewfinder, users don’t need to think twice about selecting the AF points.
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