The Sigma Corporation are pleased to announce the launch of the new 4.5mm f/2.8 EX DC Circular Fisheye HSM lens.
This autofocus circular fisheye lens has an angle of view of 180 degrees in all directions. It is exclusively designed for digital SLR cameras with the APS-C size image sensor. When used in conjunction with digital SLRs with APS-C size image sensors, it produces circular image within the frame.
The f/2.8 large aperture value produces a bright image in the viewfinder and allows photographers to take pictures in low light conditions, making it an ideal lens for Astrophotography and Aurora photography. Due to the quantifiable angle/area relationship it produces, this lens can be used for scientific and arts applications such as solid angle measurements of cloud distribution over the sky or vegetation distribution of the forest.
The minimum focusing distance of 13.5cm/5.3in and maximum magnification of 1:6 make it particularly useful for close-up photography. SLD Special Low Dispersion glass provides effective compensation of chromatic aberration. Sigma’s Super Multi-Layer Coating minimizes flare and ghosting. It is equipped with an inner focusing system that creates high definition and good image quality over the whole frame. The HSM Hyper Sonic Motor ensures fast and quiet autofocusing and allows full-time manual focus override by rotation of the focus ring.
- The first 180 degree circular fisheye lens designed specifically for APS-C size digital SLR cameras
- The fast f/2.8 maximum aperture making it ideal for low light photography
- Minimum focusing distance of only 5.3in (13.5cm) and maximum magnification of 1:6.
- Special Low Dispersion (SLD) glass minimises colour aberration.
- Equipped with HypeSonic Motor HSM with full-time manual focus override
- Equisolid angle projection method is possible for art and scientific use
- Available for Sigma, Canon and Nikon Digital Cameras
Also announced is the new 10mm f.2.8 EX DC HSM Fisheye lens designed exclusively for use with APS-C size digital SLR cameras.
This autofocus fisheye lens is designed for use with digital SLR cameras equipped with APS-C size image sensors. The Nikon version produces a diagonal angle of view of 180° （154° for Sigma, 167° for Canon）. The diagonal field of view of this fisheye lens produces striking images with exaggerated perspective and distortion. The minimum focusing distance of 13.5cm/5.3in, and maximum magnification 1:3.3 allows subjects to be as close as 1.8cm/0.7in from the lens’ front element. This close focusing capability allows close-up photography and also it is possible to make use of large depth of field that covers wide range of subjects. The Integral hood blocks out extraneous light and the Super Multi-Layer Coating minimises flare and ghosting, creating superior image quality. The HSM （Hyper Sonic Motor） ensures fast and quiet autofocusing and allows full-time manual focus override by rotation of the focus ring. This lens is supplied with a gelatin filter holder at the rear, allowing the use of gelatin filters.