Digitally optimised 4.5mm f2.8 circular fisheye lens designed exclusively for digital SLR ... more
cameras with an APS-C size image sensor. This auto focus 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.
Digitally optimised 4.5mm f2.8 circular fisheye lens designed exclusively for digital SLR ... more
cameras with an APS-C size image sensor. This auto focus 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.
Digitally optimised 4.5mm f2.8 circular fisheye lens designed exclusively for digital SLR ... more
cameras with an APS-C size image sensor. This auto focus 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.
This auto focus circular fisheye lens has an angle of view of 180 degrees in all ... more
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.
Postage & Packaging:Free! Availability:Usually dispatched within 4-5 business days...
Advantages: Good performance. Great fun. Good value. Disadvantages: Limited uses. Canon owners should consider Canon's version.
's abilities and shortcomings are rewarded in better results.
In my experience, shooting with a Canon EOS 5D full-frame DSLR camera, I have found it essential to shoot ONLY in RAW mode in order to retain the utmost quality in the original file. After initial processing in Adobe Camera Raw or Lightroom WITHOUT applying any sharpening, I then convert the RAW to a 16 bit TIF file and carryout sharpening using either USM (Unsharp Mask), Smart Sharpen or High Pass filter, depending on subject matter. Occasionally, a combination of High Pass Filter and USM may be required to attain the very best of the lens's capabilities. Since purchasing my Sigmalens, I have had the opportunity to compare the Canon 15mmf/2.8 and in my opinion, the Canon lens is marginally better.
As one of Sigma's EX (Excellence) range of lenses, it sports the familiar 'smooth ...
Advantages: Build quality. Finish. Range. Fast maximum aperture. Disadvantages: Image quality not as good as expected. Chromatic Aberration.
-size reproduction, this lens doesn't! Although both the previous and latest models of this lens focus to a highly respectable 100cm (1 metre), this does not provide 1 to 1 life-size reproduction, merely 1 to 3.5 at 200mm focal length. I do wish all manufacturers would be a little more 'honest' in their description of their product's specifications?
This lens has a large maximum aperture of f/2.8 which remains consistent throughout the zoom range and is fully compatible with the SigmaEX 1.4x or 2x APO Tele Converters, both of which maintain full AF (auto focus) facilities. The lens features Sigma's HSM (Hypersonic Motor) AF and is fast, accurate and very quiet.
Construction is a combination of metal and high quality plastics, along with a fair amount of large pieces of glass. Light it isn't but considering the specification and the fact that it has ...
Advantages: value for money (compared to pro level), build quality, Disadvantages: makes you think your a pro, but by its nature, proves you otherwise.
quality macro lens. It's a bit slow on auto focus, but if you shooting macro the chances are that the subject is pretty still. I use mine most days.
Tech Spec:
Focal length - 105mm
Weight - about 500g
Magnification - 1:1
f-stop range - 2.8-32
Filter size 58mm
Mounts: SIGMA, CANON, NIKON, SONY, PENTAX
Final point: Read about macro photography before buying a lens like this. The technique is NOT the same as 'point and shoot'. ...
Product Information for "Sigma EX fisheye lens - 4.5 mm F/2.8" »
Lens system
Type
Fisheye lens
Special Functions
Fisheye
Intended For
Digital SLR
Focal Length
4.5 mm
Lens Aperture
F/2.8
Minimum Aperture
F/22
Magnification
1 / 6
Min Focus Range
13.5 cm
Focus Adjustment
Automatic, manual
Max View Angle
180 degree(s)
Lens Construction
9 group(s) / 13 element(s)
Diaphragm Blades
6
Lens Coating
Multicoated
Mounting Type
Canon EF, Nikon F, Sigma SA
Features
Internal focusing system, full-time manual focusing, Hyper Sonic Motor (HSM), rear filter mount, SLD (Special Low Dispersion) glass, Hyper Sonic Motor (HSM), rear filter mount, SLD (Special Low Dispersion) glass
Manufacturer's product description
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.
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