Full frame / 1.00x
No
20 mm.
20 mm.
1.00x
No
No / n.a.
Aperture
f/1.4
9
No
No
No
Focus
Yes
Yes
Direct
Yes
28 cm.
0.14x (35mm. equiv)
Build
No
15/11
2 aspherical, 5 super low dispersion, 2 fluorite-like dispersion
Not supported
No
Yes
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- Dustin Abbott
It is an excellent lens in many ways, but probably not one that will make it into my bag. It is too large to be just a “bring along” lens [...]. The build quality feels excellent (...) , but the lack of any weather sealing is a serious shortcoming in a lens like this [...]. If you need great low light performance in a wide angle lens for events or wedding work, it is hard to think of a better alternative. The resolution from the lens is fantastic.