Lens Summary
Brand: Sigma
Also Known As: Sigma 50mm f/2.8 Macro
Lens Type: Prime Lens
Format: Full Frame / FX
Focus: Autofocus
Lens Mount: Canon EF, Nikon F, Pentax K, Sigma SA, Sony Alpha
Release Date: 2004-06-20
MSRP Price: $369
Made in: Japan
Infrared Rating: Good
Production Status: In Production
Lens Description: To maintain high optical performance from infinity to close-up 1:1 macro photos without accessories, the Sigma 50mm f/2.8 EX DG incorporates a "Floating Internal Focusing" (FIF) system. As a result, the lens also features a non-rotating front lens group which makes it easier to work with polarizing filters, and has a focus limiter to narrow down the broad focus range. And the improved minimum aperture of f/45 now provides improved depth of field.
Sigma 50mm f/2.8 EX DG Macro Specifications
| Lens Specifications | |
|---|---|
| Lens Type | Prime Lens |
| Focal Length | 50mm |
| Mount Type | Canon EF, Nikon F, Pentax K, Sigma SA, Sony Alpha |
| Format | Full Frame / FX |
| Compatible Format(s) | 35mm Film / Full-Frame Digital Sensor DSLR (APS-C Sensor) |
| Compatible with Teleconverters | No |
| Maximum Reproduction Ratio | 1:1 |
| Optical Stabilization (Image Stabilization) | No |
| Aperture Information | |
| Aperture Ring | No |
| Maximim Aperture | f/2.8 |
| Minimum Aperture | f/32-45 |
| Maximum Angle of View (Full frame or larger format) | 46.8° |
| Optical Information | |
| Lens Elements | 10 |
| Lens Groups | 9 |
| Diaphragm Blades | 7 |
| Focus Information | |
| Focus | Autofocus |
| Built-in Focus Motor | Yes |
| Internal Focusing | Yes |
| Minimum Focus Distance | 0.19m |
| Distance Information | Yes |
| Filter Information | |
| Filter Size | 55mm |
| Accepts Filter Type | Screw-on |
| Physical Characteristics | |
| Weather / Dust Sealing | No |
| Mount Material | Metal |
| Dimensions | 7.11 x 6.35cm |
| Weight | 312g |
| Other Information | |
| Available in Colors | Black |
Lens Construction
MTF Chart
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