Video tests of the Canon EOS 650D / Rebel T4i's Hybrid autofocus system
What improvements has Canon's Hybrid AF system brought to the EOS 650D's usability in live view, and what might this mean for the forthcoming EOS-M mirrorless camera? As a precursor to our imminent 650D/Rebel T4i review, we've published two videos showing how Hybrid AF works, compared both to conventional phase-detection AF and to a contemporary mirrorless rival (in this case the Panasonic DMC-G5). It's a chance see how the 650D performs but also gives an idea of what we can expect from the EOS-M, which uses the same technologies.
For these videos we've used a Canon EOS Rebel T4i with the EF-S 18-135mm f/3.5-5.6 IS STM lens designed specifically for use with the camera's Hybrid AF system. A further explanation of the system can be found by clicking here, but the basic idea is that phase-detection elements on the main sensor help determine the distance of the subject and contrast detection then performs a focus fine-tune, at that distance. The 18-135mm STM's lens' design features a light, internal focus group that can be quickly accelerated and decelerated to suit this autofocus behavior, and uses a stepping motor to allow fast, quiet and precise movement. The EOS-M uses the same technologies and similar designs to offer the same functions.
So, how do they perform?
Canon EOS 650D - Quick AF (phase detection) and Hybrid AF compared
Canon EOS 650D and Panasonic DMC-G5 compared
Canon EOS 700D Digital SLR Camera - (EF-S 18-55mm f/3.5-5.6 IS STM Lens,...
Canon EOS 600D Digital SLR Camera
(inc. 18-55 mm f/3.5-5.6 IS II Lens Kit)
Canon EOS 1200D Digital SLR Camera
with EF-S 18-55mm f/3.5-5.6 III Lens
Canon EOS 70D Body Only Camera - Black (20.2MP) 3.0 inch LCD
Canon EOS 650D ( 18.5 MP,3 -inch LCD )
Canon EOS 100D Digital SLR Camera - (EF-S 18-55mm f/3.5-5.6 IS STM Lens,18MP,...
Canon EOS 700D Digital SLR Camera - Body only (18MP, CMOS Sensor) 3 inch LCD
Canon EOS 600D SLR Camera
with EF-S 18-55mm f/3.5-5.6 DC III Lens (18MP) 3.0 inch LCD
Canon EOS 1100D Digital SLR Camera
(With 18-55 mm f/3.5-5.6 DC III Lens Kit)
Canon EOS 600D Digital SLR Camera (Body Only)