Canon AF DRIVE UNIT

TTL phase detection autofocus with a CCD line sensor brings your manual focus Canon FD lenses into the AF era. The Canon AF Drive Unit YG2-3112 is engineered specifically for the Canon T90, transforming it into a fast, accurate autofocus camera without replacing your existing glass.

Overview

The AF Drive Unit YG2-3112 is a dedicated autofocus accessory for the Canon T90 35mm SLR. It mounts between the camera body and any Canon FD lens, using a phase-detection system to achieve sharp focus automatically. The unit supports both single-shot AF for still subjects and servo AF for moving subjects, with visual and audible focus confirmation. Power comes from four AA batteries, and the integrated shutter release button allows one-handed operation.

What stands out

• Adds autofocus to manual focus FD lenses on the T90
• TTL phase detection with CCD line sensor for precision
• Single-shot and continuous servo AF modes
• Visual LED and audible focus confirmation
• Integrated shutter release and tripod socket
• Runs on four AA batteries – no external power needed

Technical details

• Compatible camera: Canon T90
• Compatible lenses: Canon FD manual focus lenses
• Autofocus system: TTL phase detection (SIR)
• AF sensor: CCD line sensor
• Focusing modes: Single-shot AF, Servo AF
• Focus confirmation: Visual (LED) and audible
• Power source: 4x AA batteries
• Controls: AF/MF switch, AF mode selector
• Indicators: Focus confirmation LED, battery check LED
• Tripod socket: Yes
• Shutter release button: Integrated
• Construction: High-impact plastic

Our verdict

For T90 owners with a collection of FD lenses, the AF Drive Unit YG2-3112 is a game-changer. It delivers reliable autofocus without sacrificing lens compatibility, and the battery operation keeps it portable. A must-have for anyone wanting modern AF performance from a classic Canon body.