A highly practical medium telephoto lens with superb delineation and portability. Images are sharp and clear at all apertures. Through computer simulations, the lens has been designed to give beautiful background blur. Since the front lens group does not rotate during focusing, special filter effects are not affected.
Block Diagram
Depth of Field Data
| Depth-of-Field Data for EF85mm f/1.8 USM |
| [unit:m] |
| D | F1.8 | 2 | 2.8 | 3.5 | 4 | 5.6 | 8 | 11 | 16 | 22 | | ND | FD | ND | FD | ND | FD | ND | FD | ND | FD | ND | FD | ND | FD | ND | FD | ND | FD | ND | FD | | Inf. | 108.40 | Inf. | 100.98 | Inf. | 71.43 | Inf. | 56.69 | Inf. | 50.52 | Inf. | 35.74 | Inf. | 25.29 | Inf. | 17.90 | Inf. | 12.67 | Inf. | 8.98 | Inf. | | 5 | 4.79 | 5.22 | 4.78 | 5.24 | 4.69 | 5.35 | 4.62 | 5.45 | 4.58 | 5.51 | 4.43 | 5.75 | 4.22 | 6.13 | 3.97 | 6.77 | 3.66 | 7.93 | 3.30 | 10.50 | | 2 | 1.97 | 2.03 | 1.97 | 2.03 | 1.95 | 2.05 | 1.94 | 2.06 | 1.94 | 2.07 | 1.91 | 2.10 | 1.88 | 2.14 | 1.83 | 2.20 | 1.77 | 2.30 | 1.69 | 2.46 | | 1.2 | 1.19 | 1.21 | 1.19 | 1.21 | 1.19 | 1.21 | 1.18 | 1.22 | 1.18 | 1.22 | 1.17 | 1.23 | 1.16 | 1.24 | 1.14 | 1.26 | 1.12 | 1.29 | 1.09 | 1.33 | | 1 | 0.99 | 1.01 | 0.99 | 1.01 | 0.99 | 1.01 | 0.99 | 1.01 | 0.99 | 1.01 | 0.98 | 1.02 | 0.97 | 1.03 | 0.96 | 1.04 | 0.95 | 1.06 | 0.93 | 1.08 | | 0.85 | 0.85 | 0.85 | 0.85 | 0.85 | 0.84 | 0.86 | 0.84 | 0.86 | 0.84 | 0.86 | 0.84 | 0.86 | 0.83 | 0.87 | 0.83 | 0.88 | 0.82 | 0.89 | 0.80 | 0.90 | |
| * D = Focusing Distance ND = Near Distance FD = Far Distance Inf. = Infinity |