Sigma 105mm F2.8 EX DG Macro
Launched September 2004
- Optimized image quality for Digital SLR cameras.
- Super Multi Layer (SML) coating reduces the ghost caused by reflections from the surface of digital image sensors.
- Features a compact lens design with an overall length of just 95mm.
- Minimum aperture of F/45 provides greater depth of field (F/45 for Sigma, Canon and Konica Minolta mounts and F/32 for Nikon and Pentax mounts).
- A screw-in lens hood for convenient use of circular polarizing filters
Sigma Corporation is pleased to announce the launch of the new MACRO 105mm F2.8 EX DG lens.
This new medium telephoto macro lens employs a new design concept for digital SLR cameras, its new lens power layout produces an excellent optical performance. The new lens coating cuts down ghost. The new DG lens is designed to reduce the influence of harmful light caused by reflections from the digital image sensor. Its outstanding optical performance provides the ultimate correction against lateral chromatic aberration and distortion.
This lens boasts compact dimensions of φ74mm (maximum diameter) and 95mm (overall length). It has a filter size of φ58mm and, at just 450gms, is also extremely lightweight. The minimum focusing distance of 31.2cm (12.2”) is capable of macro photography with a maximum magnification of 1:1. It is possible to enjoy photography from life-size close-up to infinity. Sigma, Canon and Konica Minolta mounts have a minimum aperture of F/45 for incredible depth of field (or F/32 for Nikon and Pentax mounts). This lens is equipped with a “Focus Limiter Switch” that limits the AF range so improving the speed and accuracy of autofocus. It also incorporates a Dual Focus (DF) system that is designed to make the lens easy to hold during auto focusing. The large focus ring offers smooth and positive action whilst focusing manually. A screw-in hood is included, for convenient use of circular polarizing filters. This telephoto macro lens has an equivalent field of view of 178mm on a digital SLR camera (when used with the SD10).
| Specifications | |
| Construction | 11 Elements in 10 Groups |
| Focal Length | 105mm |
| Maximum Aperture | ƒ2.8 |
| Minimum Aperture | ƒ45 or ƒ32 |
| Field of View | 23.3° |
| Minimum Focus Distance | 31.2cm |
| Number of blades | 8 |
| Maximum Magnification | 1:1 |
| Zooming System | N/A |
| Filter Size | 58mm |
| Diameter | 74mm |
| Length | 95mm |
| Weight | 450g |
| SRP at launch: | £339.99 |
| Available Mounts: | Sigma, Canon, Nikon (D), Pentax, Minolta (D) |