Comparison of Canon EF 85mm f/1.8 USM and Canon EF 100mm f/2 USM [S]ave
| Attribute |  Canon EF 100mm f/2 USM × |  Canon EF 85mm f/1.8 USM × |
|---|---|---|
| Diagonal Angle of View (degree) | 24.00 | 28.50 |
| Filter Size (mm) | 58 | 58 |
| Aperture (f) | 2.00 - 22.00 | 1.80 - 22.00 |
| Closest Focus (m) | 0.85 | 0.85 |
| Magnification Ratio (x) | 0.14 | 0.13 |
| Type | Telephoto Prime | Telephoto Prime |
| Focus Details | Rear focusing; full-time manual focus and USM | Inner focusing; full-time manual focus and USM |
| APS Equivalent | 160mm | 136mm |
| Diaphragm Blades | 8 | 8 |
| Image Circle | 35mm | 35mm |
| Focal Length (mm) | 100.00 | 85.00 |
| Brand | Canon | Canon |
| Name | Canon EF 100mm f/2 USM | Canon EF 85mm f/1.8 USM |
| Weight (g) | 460 | 425 |
| Diameter (mm) | 75 | 75 |
| Length (mm) | 73 | 71 |
| Zoom System | n/a | - |
| Lens Construction | 8 elements in 6 groups | 9 elements in 7 groups, including 2 aspherical elements |
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