IRIX 150mm f/2.8 Macro 1:1 Lens for Pentax K

IRIX 150mm f/2.8 Macro 1:1 Lens for Pentax K

IRIX 150mm f/2.8 Macro 1:1 Lens for Pentax K

B&H # IR15028P
IRIX 150mm f/2.8 Macro 1:1 Lens for Pentax K

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Product Highlights

  • K-Mount Lens/Full-Frame Format
  • Aperture Range: f/2.8 to f/32
  • Neutrino Coating
  • 1:1 Magnification, 1.1' Minimum Focus
  • Manual Focus Design with Focus Lock
  • Depth of Field and Focus Distance Scales
  • Dragonfly Weather-Sealed Construction
  • Rounded 11-Blade Diaphragm
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IRIX 150mm f/2.8 Overview

  • 1Description

Optimized for close-up shooting, the Pentax K-mount 150mm f/2.8 Macro 1:1 from Irix is a medium telephoto prime featuring a life-size 1:1 maximum magnification and a 1.1' minimum focusing distance for photographing nearby subjects. A bright f/2.8 maximum aperture enables working in a variety of lighting conditions and also offers greater control over depth of field for isolating subject matter. The 12 element, nine group optical design features a Neutrino coating, which helps to suppress lens flare and ghosting in order to achieve higher contrast and color accuracy when working in strong lighting conditions.

Complementing the optical assets is a robust physical construction, dubbed Dragonfly, which incorporates extensive weather sealing to guard against dust and moisture. This manual focus lens also features printed focus distance and depth of field scales to benefit fast and accurate focusing, and a rounded 11-blade diaphragm contributes to a smooth bokeh quality. Additionally, the included tripod collar has an Arca-type compatible foot for seamless compatibility with a variety of tripod heads.

Medium telephoto prime is designed for Pentax K-mount cameras, however is also suitable for APS-C models where it will provide a 225mm equivalent focal length.
Bright f/2.8 maximum aperture suits working in a variety of lighting conditions and also affords greater control over depth of field.
Ideal for macro shooting, this lens offers a life-size 1:1 maximum magnification along with a minimum focusing distance of 1.1' to suit working with close-up subjects.
A Neutrino coating has been applied to limit lens flare and ghosting for improved contrast and color fidelity.
Manual focus design is benefitted by a positive focus lock mechanism to secure your focus position at any point to limit unwanted shifting of focus.
Depth of field scale benefits using hyperfocal and pre-focus techniques.
Included tripod collar features an Arca-type compatible foot for greater tripod head compatibility.
Dragonfly finish incorporates weather sealing to guard against dust and moisture.
Rounded 11-blade diaphragm contributes to a pleasing bokeh quality.
In the Box
IRIX 150mm f/2.8 Macro 1:1 Lens for Pentax K
  • Front Lens Cap
  • Rear Cap for Pentax K-Mount Lenses
  • Lens Hood
  • Tripod Collar
  • Hard Lens Case
  • Limited 5-Year Warranty
  • Table of Contents
    • 1Description

    IRIX 150mm f/2.8 Specs

    Focal Length 150mm
    Maximum Aperture f/2.8
    Minimum Aperture f/32
    Lens Mount Pentax K
    Format Compatibility Full-Frame
    Angle of View 16
    Maximum Magnification 1x
    Macro Reproduction Ratio 1:1
    Minimum Focus Distance 13.58" / 34.5 cm
    Optical Design 12 Elements in 9 Groups
    Diaphragm Blades 11, Rounded
    Focus Type Manual Focus
    Image Stabilization None
    Tripod Collar Removable and Rotating
    Filter Size 77 mm (Front)
    Dimensions (DxL) 3.43 x 5.31" / 87 x 135 mm
    Weight 1.9 lb / 840 g
    Packaging Info
    Package Weight 3.555 lb
    Box Dimensions (LxWxH) 7.9 x 6.5 x 5.3"

    IRIX 150mm f/2.8 Reviews

    150mm f/2.8 Macro 1:1 Lens for Pentax K is rated 4.5 out of 5 by 2.
    Rated 5 out of 5 by from Good lens for the price A great macro for Pentax K mount. The tripod foot fits my Arca head nicely. The F2.8 aperture makes for easy focusing. I would recommend this lens. The only complaint is the focus ring has to be turned a lot from macro to infinity.
    Date published: 2019-02-04
    Rated 4 out of 5 by from Nice Lens, especially for Pentax Macro users I had nought Irix 11mm and 15mm lens before , both lens perform the same level, It provide good sharpness for K-1, and it is the only choice for modern ultra wide angle lens for Pentax, except  for Laowa.  So I also bought the 150mm lens from Irix in order to shoot insect. The lens handling is better than most 180mm on the market , it is shorter and lighter with tripod ring provide. It also have a lock to make sure focus is loose of tight, a very important feature for a manual macro lens. The lens use 77mm Filter, although it is good but 77mm is some what difficult to use macro ring flash , I need to buy a special adapter to use it on my Yongnuo YN-14EX-C. The lens is sharp in F2.8,   but you can see a very good result in F5.6. The lens , if need to focus on 1: 1, it need to come to 0.345m, so not as far as 180mm Macro lens. but when normally use on 1m , you can see a different with 100mm Pentax macro. The Lens have 11 blades , but one of the blades have small mark when it arrived, although it make no impact. The package is good , it over a bag to protect the lens.
    Date published: 2019-01-02
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    IRIX 150mm f/2.8 Q&A

    IRIX 150mm f/2.8 Accessories

    Designed For Use With:

    • Pentax K-1
    • Pentax K-1 II
    • Pentax K-3 II
    • Pentax K-70
    • Pentax K-S2
    • Pentax KP
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