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Canon EF 20mm f/2.8 USM on Canon EOS 5DS R vs Canon EF 28mm f/1.8 USM on Canon EOS 5DS R
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DXOMARK Score |
|
| Best at f=20mm & f/2.8 [?] | 23
|
Lens Metric Scores | |
|
Sharpness
[?]
|
18 P-Mpix
|
|
Transmission
[?]
|
3.2 TStop
|
|
Distortion
[?]
|
0.5 %
|
|
Vignetting
[?]
|
-2.4 EV
|
|
Chr. aberration
[?]
|
12 µm
|
DXOMARK Score |
|
| Best at f=28mm & f/2 [?] | 26
|
Lens Metric Scores | |
|
Sharpness
[?]
|
17 P-Mpix
|
|
Transmission
[?]
|
2.1 TStop
|
|
Distortion
[?]
|
0.3 %
|
|
Vignetting
[?]
|
-1.7 EV
|
|
Chr. aberration
[?]
|
19 µm
|
| Announced | 01/06/1992 |
| Indicative price (USD) | 514 |
| Aperture | f/ 2.8 |
| Focal range (mm) | 20 |
| Filter diameter (mm) | 72 |
| Max diameter (mm) | 77.5 |
| Mount type | Canon EF |
| Stabilization | No |
| AF Motor | USM |
| Zoom type | / |
| Rotating front element | No |
| Tripod mount | No |
| Color | Black |
| Full-Time manual focus | Yes |
| Number of lenses | 11 |
| Number of groups | 9 |
| Diaphragm blades | 6 |
| Circular aperture | No |
| Length (mm) | 70.6 |
| Weight (gr) | 405 |
Certain fields may be left blank. They will be updated as soon as possible.
| Announced | 01/09/1995 |
| Indicative price (USD) | 470 |
| Aperture | f/ 1.8 |
| Focal range (mm) | 28 |
| Filter diameter (mm) | 58 |
| Max diameter (mm) | 73.6 |
| Mount type | Canon EF |
| Stabilization | No |
| AF Motor | USM |
| Zoom type | / |
| Rotating front element | No |
| Tripod mount | No |
| Color | Black |
| Full-Time manual focus | Yes |
| Number of lenses | 10 |
| Number of groups | 9 |
| Diaphragm blades | 7 |
| Circular aperture | No |
| Length (mm) | 55.6 |
| Weight (gr) | 310 |
Certain fields may be left blank. They will be updated as soon as possible.
