The 65-point all cross-type AF sensor in EOS 7D Mark II is designed by Canon engineers base on the feed-backs from EOS 7D users on the performance of 19-point cross-type AF sensor, including the size of AF Area, number of AF points, operability, AF tracking performance and accuracy etc. The 65-point AF sensor is developed from the 61-point high density reticular AF sensor in EOS-1D X with the objective to provide wide coverage cross-type AF sensor, in order to fulfill the demand from EOS 7D Mark II users on photographing high speed subjects.

65-point all cross-type AF sensor

Wide AF area with all cross-type AF points
The coverage of auto focus area in the 65-point all cross-type AF sensor is approximately 16.5mmx6.4mm. The wider distribution of AF points improves the level of freedom in composition even for off center sub-jects. All 65 AF points are cross-type AF sensor, the key to achieving stable AF that is not easily affected by subject shape or color, realizing enhanced AI SERVO AF tracking performance of quick moving subjects.

The wide coverage of 65-point all cross-type AF sensor

Comparison of EOS 7D Mark II and EOS-1D X’s AF Sensor

^*Applicable to Single-point AF and Single-point Spot AF mode

High-precision f/2.8 cross-type AF sensor at center
The center AF point of 65-point all cross-type AF sensor provides cross-type AF at f/2.8 and f/5.6, thus a dual cross-type AF sensor. The f/2.8 sensor is arranged in a diagonal configuration to enable high sensitive focus detection. AF accuracy is enhanced when using a lens faster than f/2.8.

AF sensors in Two-line Offset Array
The vertical line of sensors at the center and the diagonal cross-type sensors sensitive to f/2.8 are in a two-line offset array with the pixel position staggered. Measuring results from the two line sensors, side by side, are averaged so they complement one another, minimizing detection errors that might otherwise occur with only single-line sampling. This ensures high-precision measurement. The center AF point also uses the entire f/5.6-sensitive sensor to detect the subject even when there is a high degree of defocus. It enables fast and easy AF control.

Distribution of AF sensor type
	f/2.8 compatible AF sensor (Offset Array)
	f/5.6 compatible AF sensor (Offset Array)
	f/5.6 compatible AF sensor

	Center AF point features f/2.8 and f/5.6 compatible dual cross-type AF sensor and high defocus control support.
	AF points with Two-line AF sensors in an Offset Array (Total 5 points)

Low light limit of EV -3
By improving the AF sensor’s pixel construction and increasing the center AF point’s AF sensor light reception area, the center AF points is able to focus in EV -3 using One Shot AF with an f/2.8 lens. This allows autofocusing even when shooting in dark conditions at high ISO speeds.

Light Source Detection
The 65-point AF system features a light source detection system to improve focus accuracy under artificial lighting. Because chromatic aberration within the optics could lead to focus errors because the different colors of light waves are focused at slightly different distances. However, because the light source detec-tion integration in the 150,000-pixel RGB+IR metering sensor is able to determine the ambient light source, the AF system can adjust for any potential chromatic aberrations that may occur within the AF system. While this is useful in all shooting situations, the greatest benefit will be seen when shooting under artificial lighting.

Light source detection sensor integrated in the 150,000-pixel RGB+IR metering sensor

AF unit with excellent resistance characteristics for environmental conditions

EOS 7D Mark II's AF Unit

The construction ad material of EOS 7D Mark II’s AF unit are excellent for environmental resistance. The AF unit is designed for stable AF performance.

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