Canon EF100mm f/2.8 Macro USM
A medium telephoto macro lens offering excellent picture quality and close-up magnification up to life size (1:1). Optimizing the optical power distribution reduces spherical aberration fluctuation during close-up photography, delivering constant high picture quality over all focusing distance. The inner focusing system makes the working distance (the distance from the lens to the subject) 149mm during life-size photography - twice the distance of the 50mm macro lens.
Convenient operability is achieved with the easy full-time manual focus ideal for subtle adjustments of the focus position (a task in macro photography and the non-rotating front lens element. If the optional ring-type tripod mount B (B) (with an adapter for the EF100mm f/2.8 Macro USM) is used, switching between vertical and horizontal compositions without affecting the optical axis is a simple matter.
- Filter size: 58mm
- Max aperture: f/2.8
- With ring USM motor
| Angle of View (Diagonal) | 24° |
| Angle of View (Horizontal) | 20° |
| Angle of View (Vertical) | 14° |
| Closest Focusing Distance (m, ft) | 0.31/1.0 |
| Construction (groups elements) | 8-12 |
| Diameter x Length (mm) (Max.) | 78.6 x 118.6 |
| Distance Scale | o |
| Drive System | Ring-type USM |
| Filter Size (mm) | 58 |
| Max. Magnification (x) | 1 |
| Min. Aperture | 32 |
| No. of Diaphragm Blades | 8 |
| Anti-dust and Moisture | Not Supported |
| Weight (g) (Approx.) | 580 |