Sigma 4.5mm f/2.8 EX DC CIRCULAR FISHEYE HSM
DC lenses are exclusively designed for digital SLR cameras. The image circle (rear of lens) is made to match the smaller dimensions used for the image sensor on digital cameras. As a result these lenses are also more compact and lightweight, and are better matched to digital SLR cameras.
The HSM (Hyper Sonic Motor) ensures fast and quiet autofocusing and allows full-time manual focus override by rotation of the focus ring It is well suited for academic and technical measurements such as solid angle measurements, cloud cover measurements & virtual reality. Having the HSM (Hyper Sonic Motor) incorporated into this lens allows for focusing to be quieter and more responsive. Special Low Dispersion (SLD) glass provides effective compensation of chromatic aberration. The EX lens series denotes excellence of engineering and new technology. Super Multi-Layer (SML) coating reduces ghost and flare.
Product Highlights:
Performance
Focal Length
4.5 mm
Aperture
Maximum: f/2.8 Minimum: f/22
Features
Physical
Camera Mount Type
Canon EF-S
Format Compatibility
Canon (APS-C)
Angle of View
180°
Minimum Focus Distance
5.3" (13.46 cm)
Magnification
0.16x
Maximum Reproduction Ratio
1:6
Groups/Elements
9/13
Diaphragm Blades
6
Image Stabilization
No
Autofocus
Yes
Tripod Collar
No
Filter Thread
None
Dimensions (DxL)
Approx. 3.0 x 3.1" (7.62 x 7.87 cm)
Weight
1.03 lb (470 g)
Accessories:
Front Lens Caps Rear Lens Caps Lens Hood Lens Case
CONTACT US: Top End Electronics PO BOX 58429 Botany, Auckland New Zealand 2163 Email: sales@topendelectronics.co.nz Customer Care No. New Zealand: (09) 8890607
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