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Irix 11 mm f/4 Firefly

Manufacturer Irix
Model 11 mm f/4 Firefly
Lens style Wide angle
Focal length 11 mm
Maximum aperture f/4
Angle of view 126 o
Closest focusing distance 0.28 m
Maximum magnification
Minimum aperture 22
Number of diaphragm blades 9
Auto focus type MF
Lens Construction 16 elements / 10 groups
Filter diameter 0 mm
Macro No
Available mounts Canon EF
Nikon F
Pentax K
Dimensions 118 x 103 mm
Weight 785 g
Additional information Announced: 2.03.2017
Size and wieght for Canon version 3 aspherical elements, 4 HR elements, 2 ED elements
Average rating (2 owners reviews)
Build quality
Optical quality
Value for money


4.50 Good
Owners reviews (2)
  1. fotobert
    fotobert 3 March 2023, 20:26
    Build quality
    Optical quality
    Value for money


    IP 91.6.x.x
    Owner since: 2 years
    Price: 450 €
    User profile: Semipro

    Cons: no filter thread some CA on the edges

    Pros: good optical performance good against bright light when used with care sensational 126 angle of view wheather sealed fine haptics (execpt for the lens cap)

    Summary: must have for landscape photographers very good price point maximum value for your money

  2. El-Pirineu
    El-Pirineu 25 October 2018, 13:01
    Build quality
    Optical quality
    Value for money


    IP 91.106.x.x
    Owner since: 3 months
    Price: 450€
    User profile: Semipro

    Cons: Heavy :-)

    Pros: Precise Mount, easy to focus but is use it normally on hyperfocal distance settings, so autofocus is unnecessary. Great Picture Quality with EOS 5D MKIII, some flaws in the corners so be careful to compose your picture

    Summary: Great value for the money even under professional aspects. Very good for Landscape photography, be careful with architecture Better pictures cost a lot more money

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