AstrHori 18mm f/8 (APS-C) 90° Macro Probe

Focal length: 18 mm
Aperture: f/8
Weight: 760 g
Filter diameter: –
Min. focus distance: 47 cm
Length: 470 mm

At a Glance

With an 18 mm focal length and a full-frame equivalent of 27 mm, this is a wide-angle probe for APS-C cameras with Nikon Z mount. It works up to 2:1 magnification and focuses from 47 cm. The front section is waterproof and detachable, an LED ring light is built in, and an aperture ring and cine gears are included. Focusing is manual. It suits macro, product shots and video.

Good for

Macro
Product
Video

Worth knowing

APS-C image circle: on full-frame cameras only usable in crop mode, at reduced resolution.
No autofocus: focusing is manual only.

Derived from the manufacturer data, not from our own tests. How we check

Technical Specifications

Min. focal length: 18 mm
Max. focal length: 18 mm
Max. aperture (min. zoom): f/8
Max. aperture (max. zoom): f/8
Min. aperture: f/28
Elements: 23
Groups: 17
Weight: 760 g (1.68 lb)
Filter diameter: –
Min. focus distance: 47 cm (18.5 in)
Max. magnification: 2:1 (2×)
Length: 470 mm (18.5 in)
Diameter: 30 mm (1.18 in)

Manufacturer data: astrhori.cn

Last checked: October 13, 2026 (against the manufacturer data) · How we check

Simulate depth of field and angle of view

Compare with other lenses

Which cameras does the AstrHori 18mm f/8 (APS-C) 90° Macro Probe fit?

The AstrHori 18mm f/8 (APS-C) 90° Macro Probe is designed for APS-C sensors. On APS-C Nikon Z cameras its field of view equals 27 mm in full-frame terms. Full-frame bodies use it in APS-C (crop) mode, recording only part of the sensor and fewer megapixels.

Nikon Z cameras

Full frame (in APS-C mode):: Nikon Z5IIC,Nikon ZR,Nikon Z5II,Nikon Z6III,Nikon Z8,Nikon Zf,Nikon Z9,Nikon Z5,Nikon Z6II,Nikon Z7II,Nikon Z6,Nikon Z7
APS-C:: Nikon Z50II,Nikon Z30,Nikon Z fc,Nikon Z50