Sigma 4.5mm f/2.8 EX DC HSM Circular Fisheye Lens for Canon Digital SLR Cameras
from: Sigma Corporation
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Product Description:
The Sigma 4.5mm F2.8 EX DC Circular Fisheye HSM lens is designed exclusively for use with APS-C size digital SLR cameras. 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, and in conjunction with the APS-C size image sensor it produces a circular image within the frame. The F2.8 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. 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/5.3" 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 auto-focusing and allows full-time manual focus override by rotation of the focus ring.Lens Construction -13 Elements in 9 Groups5.3 (13.5cm) Minimum Focusing Distance Filter Insertion-type gelatin filter into rear of the lensDimensions -Diameter 3.0 x Length 3.1 (76.2x77.8mm) Weight -16.6 ounces (470 grams)
The Sigma 4.5mm F2.8 EX DC Circular Fisheye HSM lens is designed exclusively for use with APS-C size digital SLR cameras. 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, and in conjunction with the APS-C size image sensor it produces a circular image within the frame. The F2.8 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. 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/5.3" 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 auto-focusing and allows full-time manual focus override by rotation of the focus ring.Lens Construction -13 Elements in 9 Groups5.3 (13.5cm) Minimum Focusing Distance Filter Insertion-type gelatin filter into rear of the lensDimensions -Diameter 3.0 x Length 3.1 (76.2x77.8mm) Weight -16.6 ounces (470 grams)
Features:
- Fast F2.8 maximum aperture making it ideal for low light photography
- l Minimum focusing distance of 13.5cm and a maximum magnification of 1:6
- Equisolid angle projection method is possible for art and scientific use
- Equipped with HSM with full-time manual focus override
Accessories:
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Customer Reviews
Average Rating:
Rating: - Great for equirectangular panoramas
Combined with Nodal Ninja rotating tripod heads, I'm using this lens to produce equirectangular 360deg x 180deg panoramas.Six shots in 60deg increments work perfectly when stitched with Hugin or AutoPano.
Limited depth of field is a problem --- I find that typically I have to operate the lens at f/11 or f/16 to get decent full-frame-in-focus results, which necessitates shutter times of > 0.5s indoors, so it's only really useful for static scenes.
Rating: - Great Fisheye
This lens is a great fisheye lens.It has good image quality and focuses as well as can be expected.
I have no complaints about the lens.
- Great for equirectangular panoramasCombined with Nodal Ninja rotating tripod heads, I'm using this lens to produce equirectangular 360deg x 180deg panoramas.Six shots in 60deg increments work perfectly when stitched with Hugin or AutoPano.
Limited depth of field is a problem --- I find that typically I have to operate the lens at f/11 or f/16 to get decent full-frame-in-focus results, which necessitates shutter times of > 0.5s indoors, so it's only really useful for static scenes.
- Great FisheyeThis lens is a great fisheye lens.It has good image quality and focuses as well as can be expected.
I have no complaints about the lens.
