Irix 45mm F1.4 is a Fixed aperture Manual Focus (MF)
Standard Prime lens with 35mm FF max sensor coverage, and it is designed to be used with
KAF2 Mount cameras.
What type of photography is the Irix 45mm F1.4 lens good for?
The type of photography that you are planning to use the Irix 45mm F1.4 is an important decision factor. Here we have evaluated its suitability to various photography scenarios:
Reasons to Buy Irix 45mm F1.4 Lens
Here we've included a summary of the advantages and disadvantages of the Irix 45mm F1.4 lens in a list form to help you determine whether it offers the features you need.
| Weather-sealed |
| Distance Scale |
| DoF(Depth of Field) Scale |
| Hood supplied |
| Full-time Manual Focusing |
| Very Fast Aperture |
| Covers Full-Frame Sensor |
| 9 Diaphragm Blades for Smooth Bokeh |
Report a correction
Buy Irix 45mm F1.4 from Amazon or B&H PHOTO
Lens Mount
Irix 45mm F1.4 is compatible with cameras that have a Pentax KAF2 lens mount. Some of the latest released cameras that are compatible with the Pentax KAF2 lenses are Pentax K-3 III Monochrome, Pentax KF and Pentax K-3 III.
Irix 45mm F1.4 is also available in Canon EF and Nikon F (FX) mounts.
Size, Weight and Filter Thread
Size and weight is a very important decision factor when searching for your next lens. Irix 45mm F1.4 has a maximum diameter of mm and total length of mm. It weighs 925g / 32.6 oz.
Irix 45mm F1.4 has a filter thread of 77mm. Below are links to the filters that we recommend you to consider for your Irix 45mm F1.4:
Focal Range
Irix 45mm F1.4 has a fixed focal length of 45mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides an 35mm (FF) equivalent of 67.5mm.
Weather Sealings
The Irix 45mm F1.4 is a weather-sealed lens, which provides extra protection to prevent water and dust get inside the lens and camera body under light rain, snow and wind. In order to have effective protection, you have to pair the Irix 45mm F1.4 with a weather-sealed camera body such as the Pentax K-3 III Monochrome, Pentax KF and Pentax K-3 III.
Below are the 3 Standard Prime type Pentax KAF mount lens alternatives with highest max magnification ratios:
Aperture
Irix 45mm F1.4 has a max aperture of F1.4.
Lens Hood
Irix 45mm F1.4 comes with a removable lens hood which is handy to reduce lens flare and glare in your photos.
Body Colour
Irix 45mm F1.4 is available in Black color.
Popular Comparisons of Irix 45mm F1.4
Here are the eight most popular comparisons of the Irix 45mm F1.4 amongst Camera Decision readers.
Top Alternatives of Irix 45mm F1.4 Lens
**This post contains affiliate links, and I will be compensated if you make a purchase after clicking through my links. As an Amazon Associate, I earn from qualifying purchases.