Solution
With the camera models incorporating the Hybrid CMOS AF III,
contrast AF is also used depending on shooting conditions and lenses used.
The combination use of Contrast AF is more likely to be applied with a darker subject,
a smaller subject and lower contrast.
Shooting settings and lens for use (Contrast AF will be used if any of the following applies.)
- Set aperture is smaller than f/5.6 (larger f/stop number than f/5.6).
- One of the following lenses or an extender is in use.
Note that the lenses marked with "*" have difficulties in autofocus with Contrast AF, and it may take some time to focus or accurate focus may not be achieved.
EF14mm f/2.8L USM
EF24mm f/1.4L USM
EF100mm f/2.8 Macro *
EF400mm f/2.8 L USM *
EF500mm f/4.5 L USM
EF600mm f/4 L USM
EF1200mm f/5.6L USM
EF16-35mm f/2.8L USM
EF17-35mm f/2.8L USM
EF20-35mm f/2.8L *
EF24-85mm f/3.5-4.5 USM
EF28-70mm f/2.8L USM
EF28-70mm f/3.5-4.5 *
EF28-70mm f/3.5-4.5 II *
EF28-80mm f/2.8-4L USM
EF28-80mm f/3.5-5.6 *
EF28-80mm f/3.5-5.6 USM
EF28-80mm f/3.5-5.6 II *
EF28-80mm f/3.5-5.6 II USM *
EF28-80mm f/3.5-5.6 III USM *
EF28-80mm f/3.5-5.6 IV USM *
EF28-80mm f/3.5-5.6 V USM *
EF28-105mm f/3.5-4.5 USM *
EF28-105mm f/3.5-4.5 II USM
EF28-105mm f/4-5.6
EF28-105mm f/4-5.6 USM
EF35-70mm f/3.5-4.5 *
EF35-70mm f/3.5-4.5A *
EF35-80mm f/4-5.6 *
EF35-80mm f/4-5.6 PZ *
EF35-80mm f/4-5.6 USM *
EF35-80mm f/4-5.6 II *
EF35-80mm f/4-5.6 III *
EF35-105mm f/3.5-4.5 *
EF35-105mm f/4.5-5.6 *
EF35-105mm f/4.5-5.6 USM *
EF35-135mm f/3.5-4.5 *
EF35-135mm f/4-5.6 USM
EF50-200mm f/3.5-4.5 *
EF50-200mm f/3.5-4.5L *
EF70-210mm f/3.5-4.5 USM
EF70-210mm f/4 *
EF75-300mm f/4-5.6 *
EF80-200mm f/2.8L *
EF80-200mm f/4.5-5.6 *
EF80-200mm f/4.5-5.6 USM *
EF80-200mm f/4.5-5.6 II *
EF90-300mm f/4.5-5.6 *
EF90-300mm f/4.5-5.6 USM *
EF100-200mm f/4.5A *
EF100-300mm f/4.5-5.6 USM
EF100-300mm f/5.6 *
EF100-300mm f/5.6L *