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AstrHori 18mm Macro Probe Lens

The AstrHori 18mm f/8 is a 18mm f/8 lens designed for Canon EF, Nikon F, Sony E, Micro Four Thirds mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.

AstrHori 18mm Macro Probe Lens

AstrHori 18mm Macro Probe Lens

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Lens Overview — AstrHori 18mm f/8

The AstrHori 18mm Macro Probe Lens is a specialty wide-angle prime lens designed for macro and close-up photography, offering a genuinely unusual tool for creative shooters. Built around an 18mm focal length, this is a full-frame compatible lens that operates across a broad range of camera systems, with mount options covering Canon EF, Nikon F, Sony E, and Micro Four Thirds — making it accessible to a wide audience of photographers regardless of their existing kit. It is a manual focus lens with no autofocus capability and no image stabilization, which is standard for a specialist probe-style optic where precise, deliberate control is part of the workflow.

The maximum aperture is f/8, reflecting the optical demands of the probe lens design. Weighing in at 1700g, this is a substantial piece of glass that requires considered handling and likely tripod or support use in most shooting situations. There is no filter thread listed for this lens.

As a prime lens in the wide-angle focal length range, it is purpose-built for photographers who want to explore unconventional perspectives and detailed macro work in a single, distinctive optic.

Key Features — AstrHori 18mm f/8

18mm Probe Design: Long, narrow tube construction allows the lens to be inserted into tight spaces or placed extremely close to subjects for unconventional macro perspectives.

Full-Frame Coverage: Covers a full 35mm image circle, making it compatible with both full-frame and crop-sensor mirrorless bodies without vignetting concerns.

1:2 Macro Reproduction: Capable of close-focus macro shooting, letting photographers capture fine surface detail and small subjects at near life-size reproduction.

f/8 Maximum Aperture: Fixed maximum aperture of f/8 is inherent to the probe optical design, delivering sharp, detailed images across the focus plane.

Manual Focus Only: No autofocus motor — focus is set manually, giving the photographer deliberate, repeatable control suited to close-up and macro workflows.

Wide Mount Compatibility: Available in Canon EF, Nikon F, Sony E, and Micro Four Thirds mounts, covering a broad range of camera systems.

Lens Specifications — AstrHori 18mm f/8

AstrHori 18mm f/8 full specifications
SpecDetail
Use CasesMacro
Lens TypeMacro
FormatFull Frame
Zoom/PrimePrime
Focal Length18mm
Maximum Aperturef/8
Camera SystemMirrorless
Lens MountCanon EF, Nikon F, Sony E, Micro Four Thirds
AutofocusNo
Focus TypeManual Focus
Image StabilizationNone
Weight1700g

Description — AstrHori 18mm f/8

The AstrHori 18mm Macro Probe Lens is a prime, wide-angle specialty optic built for photographers who want to push into unconventional macro territory. With a fixed 18mm focal length and a full-frame image circle, it delivers consistent coverage on compatible bodies across its supported mounts: Canon EF, Nikon F, Sony E, and Micro Four Thirds. Operation is entirely manual focus — there is no autofocus system — placing full creative control in the photographer's hands.

The maximum aperture of f/8 is inherent to the probe lens form factor. Weighing 1700g, this lens is a serious physical commitment and benefits greatly from stable support during use. No image stabilization is present, and there is no listed filter thread. For photographers drawn to detailed, close-up, and creatively composed wide-angle imagery, the AstrHori 18mm Macro Probe Lens offers a distinctive and deliberately manual shooting experience across multiple major camera platforms.

Pros — AstrHori 18mm f/8

  • ✓Full-frame coverage (lensFormat: Full Frame) means no crop-factor concerns on compatible bodies
  • ✓Broad mount compatibility across Canon EF, Nikon F, Sony E, and Micro Four Thirds systems
  • ✓Prime 18mm focal length provides a consistent wide-angle field of view

Cons — AstrHori 18mm f/8

  • ✗No autofocus (autoFocus: false) — every shot requires manual focus adjustment
  • ✗Maximum aperture of f/8 limits light intake, making low-light use challenging
  • ✗At 1700g, the lens is heavy and will likely require dedicated support or tripod use

Videos — AstrHori 18mm f/8

AstrHori 18mm f/8 Probe Lens Review: Videographers Will EAT IT UP! — PetaPixel

Resources & Downloads — AstrHori 18mm f/8

Manuals & Guides

Frequently Asked Questions — AstrHori 18mm f/8

What camera mounts is the AstrHori 18mm Macro Probe Lens compatible with?+
The lens is available in Canon EF, Nikon F, Sony E, and Micro Four Thirds mounts. It is designed for the mirrorless camera system but mount options also cover DSLR-style Canon EF and Nikon F fittings.
Does this lens have autofocus?+
No — this is a fully manual focus lens. There is no autofocus mechanism, so all focus adjustments must be made by hand. This is typical for specialty probe-style optics.
Will this lens work on a full-frame camera?+
Yes. The lens format is listed as Full Frame, so it is designed to cover a full-frame image circle on compatible camera bodies.
How heavy is the AstrHori 18mm Macro Probe Lens?+
The lens weighs 1700g. This is quite substantial, and most users will want to use it with a tripod or other camera support rather than shooting fully handheld.
What is the maximum aperture of this lens?+
The maximum aperture is f/8. This is a relatively narrow maximum aperture, which is a characteristic of the probe lens optical design.
Does the lens accept screw-on filters?+
No filter thread size is listed in the specifications for this lens, so screw-on filter compatibility cannot be confirmed.

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