To maintain high optical performance from infinity to close-up 1:1 (life-size) macro photos without accessories, the new Sigma 50mm f/2.8 EX incorporates a 'floating' element focusing system. Designed as a quick-focusing macro lens the AF speed of 50mm, f/2.8 EX Macro is 1.4 times faster than previous 50mm f/2.8 macros. It features a non-rotating front lens group which makes it easier to work with polarizing filters and has a focus limiter (eg. Full Range;infinity - 9.8 in.; 9.1 in. - 7.4 in.). The Sigma 50mm f/2.8 EX Macro lens also features the new deluxe EX external finish.
FEATURES:
| Filter Size | 55mm |
| F-Stop Range | F/2.8 - 32 |
| Minimum Focus Distance | 7.4' |
| Magnification | 1:1 |
| Zoom/Focus Control | None |
| Angle Of View | 46.8 Deg. |
| Groups/Elements | 9/10 |
| Length | 2.5' |
| Max. Diameter | 2.8' |
| Weight | 11.3 Oz. |
| Specialties | Floating Element |
