Comparison of Canon EF 300mm f/4L IS USM and Olympus 300mm f/4.0 IS Pro ED M.Zuiko Digital [S]ave
| Attribute |  Olympus 300mm f/4.0 IS Pro ED M.Zuiko Digital × |  Canon EF 300mm f/4L IS USM × |
|---|---|---|
| Aperture (f) | 4.00 - 22.00 | 4.00 - 32.00 |
| Filter Size (mm) | 77 | 77 |
| Notes | Built-in image stabilization CIPA rated for 4.0 stops, 6.0 stops when combined with Olympus body IS; Dust and splash-proof | Image Stabilization |
| Closest Focus (m) | 1.4 | 1.5 |
| Magnification Ratio (x) | 0.24 | 0.24 |
| Diaphragm Blades Type | rounded | - |
| Type | Telephoto Prime | Telephoto Prime |
| APS Equivalent | - | 480mm |
| Diaphragm Blades | 9 | 8 |
| Image Circle | Image Circle | 35mm |
| Focal Length (mm) | 300.00 | 300.00 |
| Brand | Olympus | Canon |
| Name | Olympus 300mm f/4.0 IS Pro ED M.Zuiko Digital | Canon EF 300mm f/4L IS USM |
| Weight (g) | 1270 | 1190 |
| Diagonal Angle of View (degree) | 4.10 | 8.30 |
| Length (mm) | 227 | 221 |
| Diameter (mm) | 92.5 | 90 |
| Focus Details | - | Inner focusing; full-time manual focus and USM |
| 35mm Equivalent | 600mm | - |
| Lens Construction | 17 elements in 10 groups, including 3 Super ED, 1 Extra-High Refractive index lens and 3 High Refractive index elements; ZERO coating | 15 elements in 11 groups, including 2 UD elements |
Help · Contact us · Disclaimer · Contributors · Developers · Donate