Irix 11mm f/4.0 (Pentax K)

Specifications

Irix
11mm f/4.0
(for Pentax K)
2017-02-20
Yes
525 €
$595+VAT
Data are for Firefly (lighter) version, there is also the Blackstone (full metal) version at 695 €/ $825+VAT, weighting 790 gr.
730 gr.
118 x 118 x 103 mm.
Rear filter supported (30x30 mm)
KA2
Full frame / 1.00x
No
11 mm.
11 mm.
1.00x
No
No / n.a.

Aperture

f/4
9
No
No
No

Focus

No
Yes
Direct
Yes
focus lock switch
27 cm.
0.07x (35mm. equiv)

Build

No
16/10
4 refractive, 2 extra low dispersion, 3 aspherical
Not supported
Yes
Yes
 
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Lens Irix 11mm f/4.0 (for Pentax K)