NEW 4.5mm F2.8 EX DC Circular Fisheye Lens
The first Circular Fisheye Lens exclusively for use with
APS-C size digital SLRs.
The Sigma Corporation is pleased to announce the launch of the new 4.5mm F2.8 EX DC Circular Fisheye HSM lens.
- The first 180 degree circular fisheye lens designed specifically for APS-C size digital SLR cameras
- Fast F2.8 maximum aperture making it ideal for low light photography
- Minimum focusing distance of 13.5cm and a maximum magnification of 1:6
- SLD glass minimizes color aberration
- Equipped with HSM with full-time manual focus override
- Equisolid angle projection method is possible for art and scientific use
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 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. 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/5.3inch 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.
| Sigma 4.5mm F2.8 EX DC Fisheye Lens Specifications | |
| Lens Construction | 13 Elements in 9 Groups |
| Angle of View | 180 degrees |
| Number of Diaphragm Blades | 6 Blades |
| Minimum Aperture | F22 |
| Minimum Focusing Distance | 13.5cm/5.3 in. |
| Maximum Magnification | 1:6 |
| Filter | Insertion-type gelatin filter into rear of the lens |
| Dimensions | Diameter 76.2mm X Length 77.8mm 3.0 in. X 3.1 in. |
| Weight | 470g/16.6 oz. |
| Corresponding AF Mounts | SIGMA, CANON, NIKON |
Related Content:
Prime lens reviews
Zoom lens reviews
All Sigma reviews
Sigma Web site
Why don’t you make it in Pentax mount?
Branimir-
I’m not sure, but I expect Sigma isn’t making it with a Pentax mount because of the HSM AF motor. I think only Sigma, Nikon, and Canon support that AF drive system. But it’s likely that a non-HSM version is in the works. Because Pentax, Sony, and the Four Thirds cameras represent a lot of potential lens buyers.
sigma continues to be one of my prominent considerations when buying glass,, and i own a few;
it would be nice to see a pentax version of this lens.
Do you know any website with image samples shoted whith this lens, or any review with real samples.. ?
Thanks
Jaume-
This lens was only announced a few days ago. I don’t know of anyone who has one yet. But PMA is coming up just next week. I will see if I can put one on my camera and take some pictures for you.
Make sure to check back for our 2008 PMA tradeshow coverage.
As a PV hers rater I am looking forward to this lens being made for my Pentax. This will allow for a zenith directed shot that is scaleable to the horizon to measure obstructions of Photovoltaic cells for efficient positioning.
I’m ready to buy as soon as the Pentax model is out.
Another Pentax owner who would readily buy if pentax mount available. Given that super wide angles do not really need to be focused accurately or quickly, the autofocus motor is actually redundant. I usually prefocus my superwides, especially my sigma 8mm f/4 before composing the shot, especially if there is to be any action, which would almost never be in the superclose range where focus is critical. A T-mount non autofocus version would be awesome and presumeably cheaper. Full marks for the fast f/2.8 aperture for astronomy .