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 the EF 75-300mm f/4-5.6 III Lens uses a DC motor instead of a USM to drive the AF.
Specifications:
- Focal Length: 75-300mm
- Maximum Aperture: 1:4-5.6
- Lens Construction: 13 elements in 9 groups
- Diagonal Angle of View: 32° 11' - 8° 15'
- Focus Adjustment: Front group rotating extension system with Micromotor
- Closest Focusing Distance: 1.5m/ 4.9 ft.
- Filter Size: 58mm
- Maximum Diameter x Length: 2.8" x 4.8" / 71mm x 122mm
- Weight: 16.8 oz. / 480g