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|Dimensions (dxl)||Approx. 2.9 x 2.7" (7.37 x 6.86 cm)|
|Weight||14.11 oz (400 g)|
|Focal length||8 mm|
|Camera mount type||Sigma SA|
|Format compatibility||35mm Film / Full-Frame Digital Sensor
DSLR (APS-C Sensor)
|Minimum focus distance||5.3" (13.46 cm)|
|Angle of view||180°|
|Maximum reproduction ratio||1:4.6|
For those needing this type of lens, for example when using software to create panoramics or for those involved in the scientific measurement of angles, where the output from this lens is quantifiable, this lens is an excellent tool.
High optical resolution, Good control of aberrations, Compact size and weight
Restricted uses (but it is a specialised lens), Expensive if only being used for the fun element
An updated version of Sigma's 8mm f/4 spherical fisheye, this is the field's widest circular fisheye with autofocus. It's also among the last Sigma film-era lenses to be upgraded with coatings that suppress reflections from digital sensors ("DG").
I've used fisheye lenses for most of my career and for the past 20 years have had to learn to use the circular fisheye lenses for one of my clients. The Nikon 8mm 2.8 fisheye was the best during film days, but finding one years after discontinuance makes them pricy.
Size and quality
Paint issue and infinity focus
.. if you know what exactly you wanna do with it. I think it takes 180 degrees angle shot, so it's pretty specific.
This lens is the one to pull out when things are slow and wouldn't normally attract interest. With this lens, almost every photo taken is in a perspective never seen by anybody, and thus looks very unique.
Sharp all around! It is crisp and very sharp up until its far far edges. F/5.6 and higher get you sharper shots up until F/16. After F/16, you're just compensating for an intense light source., Versatility: The many uses it has can seem almost endless.
Sharpness below F/5.6: Tends to be a bit soft on distant objects, but thats not what the lens is for. The F/3.5 aperture is perfect for objects with no depth, such as astro-photography, but thats not a common photo. Eyes tend to not focus too well at F/3.5.
This lens is STURDY. Very high quality optics. Crisp, clear, and wide every time :D
Does exactly what it says on the tin! Fairly limited applications for this lens, but what it does, it does well.
Reluctant to spend huge amounts on such a specialist bit of kit, but this is a great little lens for the money (although a bit long in the tooth now). I bought it to make 4-shot spherical panoramas with PTGui, and this works perfectly.
This is specified kit for the Google Trusted Photographer programme so you have either this or the Canon equivalent. It produces good images with acceptable degradation at the edges but nicely sharp in the centre.
Consistent Output, Easily Interchangeable, Lightweight
I bought this lens to create virtual tours of local businesses and I have been using it for the last month. Can't fault it.
For my Nikon full-frame D700 and with Nikon no longer offering their own equivalent, this brilliant little Sigma remained the only choice for me. Being semi-pro, I didn't want to resort to using an attachment on the front of another lens.
This lens is very high quality and is excellent for panoramas. Purchased for a specific need which it as fulfilled very well.