The optical system construction and exterior are the same as the EF 75-300 mm f/4-5.6 III USM’s. The difference is that it uses a DC motor instead of a USM to drive the AF.300 mmApertureMaximum: f/4.0.
5.6Minimum: f/32.
45Camera Mount TypeCanon EFFormat Compatibility35mm Film / Full-Frame Digital SensorCanon APS-CAngle of View32.
8Minimum Focus Distance4.

Canon EF 75-300mm f/4-5.6 III Telephoto Zoom Lens
$69.73