Thursday, July 31, 2008
Airy disk - bad news for ever more megapixels camera
Airy disk - bad news for more megapixels camera
| diaphragm | diameter of the Airy disc |
| f/1.4 | 1.9 µm |
| f/2.8 | 3.8 µm |
| f/5.6 | 7.5 µm |
| f/8 | 10.7 µm |
| f/11 | 14.8 µm |
| f/16 | 21.5 µm |
| f/22 | 29.5 µm |
| f/32 | 42.9 µm |
| f/64 | 85.9 µm |
Some camera formats
- APS-C sensor (1:1.5 crop factor / Sony SLR) of 6 mega-pixels: 8 µm
- APS-C sensor (1:1.6 crop factor / Canon SLR) of 8 mega-pixels: 6.5 µm
- APS-C sensor (1:1.6 crop factor / Canon SLR) of 12 mega-pixels: 5.3 µm
- Full Frame sensor of 12 mega-pixels (Canon 5D): 8.5 µm
- Full Frame sensor of 24 mega-pixels (Sony Alpha 900): 6 µm
- 1/2,5″ sensor of 8.2 mega-pixels (HP Photosmart R937 point-and-shoot): 1.7 µm
THIS LINK posted by Joseph Bell : 9:53 AM
