User Manual for IRIX 15mm f 2.4 Firefly Lens for Pentax K Click to enlarge the picture
Contents of the user manual for the IRIX 15mm f 2.4 Firefly Lens
- Product category: SLR Lenses IRIX
- Brand: IRIX
- Description and content of package
- Technical information and basic settings
- Frequently asked questions – FAQ
- Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
- Authorized service for IRIX SLR Lenses
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User manual for the IRIX 15mm f 2.4 Firefly Lens contain basic instructions
that need to be followed during installation and operation.
Before starting your appliance, the user manual should be read through carefully.
Follow all the safety instructions and warnings, and be guided by the given recommendations.
User manual is an integral part of any IRIX product,
and if it is sold or transferred, they should be handed over jointly with the product.
Following the instructions for use is an essential prerequisite for protecting
health and property during use, as well as recognition of liability on the part of the manufacturer
for possible defects should you make a warranty claim. Download an official IRIX user manual in which you will find instructions on how to install, use, maintain and service your product.
And do not forget – unsuitable use of a IRIX product will considerably shorten its lifespan!
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Product description Best SLR Lenses of 2017 Read More An impressively wide prime lens, the Pentax K-mount 15mm f/2.4 Firefly Lens from Irix meshes an advanced optical design with a lightweight, durable physical construction. The expansive field of view is complemented by a sophisticated optical layout that utilizes low dispersion, aspherical, and high-refractive glass elements, as well as a Neutrino coating, to render imagery with low distortion, controlled spherical and chromatic aberrations, high contrast, and natural color rendering.
In addition to the imaging performance, this 15mm f/2.4 utilizes a manual focus design for fine-tuned control, and incorporates a unique positive focus lock to secure the focusing position at any point for consistent, repeatable shooting. As the Firefly version of this focal length, this lens is also distinguished by a lightweight ABS plastic exterior, printed lens markings, and weather-sealing about the lens housing to permit working in trying environmental conditions. - The Firefly version of the 15mm f/2.4 lens features a lightweight ABS plastic exterior construction that is sealed against moisture and dust along the main body of the lens. The Firefly construction also incorporates a rubber focus ring for improved grip and control, and has printed focus distance and depth of field scales to aid working with pre-focusing and hyperfocal focusing techniques.
- Wide-angle prime designed for full-frame Pentax K-mount DSLRs, this lens can also be used on APS-C models where it provides a 22.5mm equivalent focal length.
- Two aspherical, three high-refractive index, and two extra-low dispersion elements are featured within the optical design to limit both spherical and chromatic aberrations, as well as color fringing and distortion, for improved clarity, sharpness, and even illumination.
- A Neutrino coating has been applied to limit lens flare and ghosting for improved contrast and color fidelity.
- Manual focus designed is benefitted by a positive focus lock mechanism to secure your focus position at any point to limit unwanted shifting of focus.
- A hard click stop indicates the infinity position on the focus ring for easy use in low-visibility conditions.
- Large depth of field scale benefits using hyperfocal and pre-focus techniques.
- Front of lens has 95mm-diameter filter threads and the rear of the lens accepts 30 x 30mm cut gel filters to lessen the likelihood of vignetting.
- Rounded nine-blade diaphragm contributes to smooth bokeh.
In the Box IRIX 15mm f/2.4 Firefly Lens for Pentax K 95mm Front Lens Cap for 15mm f/2.4 Blackstone or Firefly Rear Cap for Pentax K-Mount Lenses Lens Hood for 15mm f/2.4 Soft Lens Pouch (Gray) Limited 5-Year Warranty Macro Lens Buying Guide Todd Vorenkamp 11/27/2018 Table of Contents
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Technical parametersIRIX 15mm f/2.4 Firefly Specs | Focal Length | 15mm | | Maximum Aperture | f/2.4 | | Minimum Aperture | f/22 | | Lens Mount | Pentax K | | Format Compatibility | Full-Frame | | Angle of View | 110
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