Understanding Auto Focus Target Size
(Updated 20 softwares)
1. Targets vary in size by model. Some are wider than others due to larger AF sensors and a larger field covered by the sensor.
2. The grid graduations behind the AF chart is a ruler. Each block should be exactly 10mm. Count the number of blocks to find the correct target size.
- A 5 D Mk4 target has 18 graduations making the target size 180mm (± 1mm)
- A 80D target has 16 graduations making the target size 160mm (± 1mm)
As shown in Video #1: The target size is measured across the width of the target and should fall within ±1mm.
Targets should be printed on Card Stock - 100gsm or thicker.