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Irix 11mm f/4.0 Firefly Pentax

Pentax K, Micro Four Thirds
Currently out of stock
Free shipping starting at 30,–

Product details

Extreme wide-angle lens for full-frame cameras with a field of view of 126°. Four high-refractive, two ED, and three aspherical lenses ensure minimal distortion of only 3.13%. Unique in its class!

The Irix Firefly offers the same optical performance as the Blackstone variant but is integrated into a lighter construction. Whether you're hiking, traveling, flying, or simply need to keep the weight down, the Firefly will be your first choice. Its ergonomic design and non-slip rubber coating make this lens even more practical. The hyperfocal distance scale intuitively shows you the depth of field range based on the aperture. For easier operation without optical control, you'll hear a slight "click" sound when the ring is in the "Infinity" setting. Finally, you can operate your lens instinctively and focus your gaze and full attention on the composition of your image. A lockable focus ring, weather-resistant protection against dust and moisture, an infinity click, and a rear filter slot: all these features combined in a solid aluminum housing make the Irix 11mm lens an indispensable companion for landscape, architecture, night sky, and extreme photography.

As photographers, we know how important it is to protect your gear. Therefore, every Irix lens is equipped with weather-resistant seals. Enjoy your trip with the confidence that we have taken every measure to protect your lens from moisture, dust, and dirt.

Key specifications

Lens type
Prime lensWide-angle lens
Bayonet lens mount
Pentax K
Sensor compatibility
Micro Four Thirds
Focus type
Manual focus
Weight
730 g
Documents
Manual.pdf

General information

Item number
7026162
Manufacturer
Irix
Category
Lenses
Manufacturer No.
IL-11FF-PK
Release date
8.12.2017

Colour

Colour
Black

Material

Material group
MetalPlastic

Focusing

Minimum focus distance
0.28 m

Camera lens properties

Lens type
Prime lensWide-angle lens
Bayonet lens mount
Pentax K
Focal length
11 mm
Min. focal length (exact)
11 mm
Max. Focal length (exact)
11 mm
Aperture
4 f/
Min. aperture
4 f/
Sensor compatibility
Micro Four Thirds
Number of diaphragm blades
9x
Filter thread
30 mm
Number of lenses
16
Number of lens groups
10
Lens equipment
Metal bayonet
Focus type
Manual focus
Durability
DustproofSplashproofWeather resistant

Objective 2 properties

Min. focal length (exact)
11 mm
Aperture
f/4 - 22
Min. aperture opening
f/4

Scope of delivery

Scope of delivery
Bag

Product dimensions

Weight
730 g
Length
118 mm
Diameter
103 mm

Package dimensions

Length
18.30 cm
Width
16.30 cm
Height
14.20 cm
Weight
1.37 kg

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Reviews & Ratings

Statutory warranty score

How often does a product of this brand in the «Lenses» category have a defect within the first 24 months?

Source: Galaxus
  • Irix
    Not enough data
  • 1.7artisans
    0,3 %
  • 1.Canon
    0,3 %
  • 3.Nikon
    0,4 %
  • 3.Sigma
    0,4 %

Statutory warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Galaxus
  • Irix
    Not enough data
  • 1.TTArtisan
    1 day
  • 1.Viltrox
    1 day
  • 3.Laowa
    3 days
  • 4.Sigma
    6 days

Return rate

How often is a product of this brand in the «Lenses» category returned?

Source: Galaxus
  • Irix
    Not enough data
  • 1.Fujifilm
    5,3 %
  • 2.Nikon
    5,4 %
  • 3.Sony
    5,9 %
  • 4.Canon
    6 %
Source: Galaxus

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