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IRIX 45mm f/1.4 Standard Lens for Nikon F Mount

The IRIX IL-45F-NF is a 45mm f/1.4 lens designed for Nikon F mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.

IRIX 45mm f/1.4 Standard Lens for Nikon F Mount

IRIX 45mm f/1.4 Standard Lens for Nikon F Mount

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Lens Overview — IRIX IL-45F-NF

The IRIX 45mm f/1.4 is a manual focus prime lens built for full-frame Nikon F mount DSLR cameras. Sitting in the standard focal length range, the 45mm field of view offers a perspective that feels natural and versatile, making it well suited to a wide variety of shooting situations. The standout specification here is the maximum aperture of f/1.4, which opens the door to significant background separation and strong low-light performance.

Being a prime lens, it carries no zoom mechanism, which typically allows manufacturers to prioritize optical quality and build integrity over versatility. At 925g, this is a substantial piece of glass — buyers should factor that into any consideration around handheld shooting or travel use. The 77mm filter thread is a common size, meaning compatibility with a wide range of filters is easy to achieve without step-up rings.

Image stabilization is listed as none, which is worth noting given the manual-focus-only operation — there is no autofocus system on board. This lens is designed explicitly for full-frame Nikon F mount DSLR bodies, so buyers should confirm their camera system matches before purchasing.

Key Features — IRIX IL-45F-NF

45mm f/1.4 Prime: A standard focal length with a wide maximum aperture, delivering a natural field of view with strong subject separation and low-light capability.

Full-Frame Coverage: Designed for full-frame sensors, so no crop factor applies on compatible Nikon F mount DSLR bodies.

Manual Focus Only: No autofocus motor is included, making this lens best suited to deliberate, controlled shooting workflows where manual focus is preferred.

Nikon F Mount: Compatible with the full range of Nikon F mount DSLR cameras, both full-frame and crop sensor bodies.

77mm Filter Thread: A common filter diameter that gives easy access to a wide range of filters without needing step-up rings.

Substantial Build at 925g: The solid construction contributes to optical and mechanical quality, though the weight is worth considering for handheld or travel use.

Lens Specifications — IRIX IL-45F-NF

IRIX IL-45F-NF full specifications
SpecDetail
Use CasesStudio, Fashion
Lens TypePrime
FormatFull Frame
Zoom/PrimePrime
Focal Length45mm
Maximum Aperturef/1.4
Camera SystemDSLR
Lens MountNikon F
AutofocusNo
Focus TypeManual
Image StabilizationNone
Filter Thread77mm

Description — IRIX IL-45F-NF

The IRIX 45mm f/1.4 is a manual focus prime lens designed specifically for full-frame Nikon F mount DSLR cameras. With a maximum aperture of f/1.4 and a 45mm standard focal length, it occupies a versatile position in any prime lens lineup. The lens features a 77mm filter thread, giving photographers easy access to a broad range of compatible filters.

Weighing in at 925g, it has a solid, substantial feel that reflects its build. There is no autofocus and no image stabilization on board, so this lens is best suited to photographers comfortable working with manual focus and deliberate shooting technique. As a prime lens in the standard focal length range, it is built around the single focal length rather than offering zoom flexibility, keeping the optical design purpose-driven.

Pros — IRIX IL-45F-NF

  • ✓Wide maximum aperture of f/1.4 enables strong subject separation and low-light shooting
  • ✓Full-frame coverage (lensFormat: Full Frame) means no crop factor concerns on compatible bodies
  • ✓Standard 77mm filter thread provides broad compatibility with common filter systems

Cons — IRIX IL-45F-NF

  • ✗Manual focus only — no autofocus support, which may be limiting for fast-moving subjects
  • ✗No image stabilization (imageStabilization: None), which combined with manual focus requires careful technique
  • ✗At 925g, this lens is on the heavier side for a 45mm prime, adding noticeable weight to a kit

Videos — IRIX IL-45F-NF

Mystery Unboxing from Irix Lens (Magnetic Mount Cine Lens Filters) With Tests — Scott Dumas

Resources & Downloads — IRIX IL-45F-NF

Manuals & Guides

Frequently Asked Questions — IRIX IL-45F-NF

Does this lens work with full-frame Nikon F mount cameras?+
Yes. The lens format is specified as Full Frame and the mount is Nikon F, so it is designed to cover full-frame DSLR sensors without vignetting. Always confirm your specific body uses the Nikon F mount before purchasing.
Does the IRIX 45mm f/1.4 have autofocus?+
No. The autofocus specification is listed as false, and the focus type is Manual only. Shooters who rely on autofocus for their work should take this into account.
What filter size does this lens use?+
The IRIX 45mm f/1.4 uses a 77mm filter thread, which is a widely used size compatible with many popular filter brands and systems.
Does this lens include image stabilization?+
No. Image stabilization is listed as None in the specifications. Users should be mindful of shutter speed and shooting technique to avoid camera shake, particularly when shooting handheld.
How heavy is this lens?+
The lens weighs 925g. This is a meaningful consideration for photographers who prioritize a lightweight kit or plan extended handheld shooting sessions.

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