Kase 150mm f/5.6 AF Reflex

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Nikon Z Prime full-frame 2026

Autofocus

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B&H Photo Kase 150mm f/5.6 AF Reflex

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Compare with

150mm

Focal length

f/5.6

Max aperture

529 g

Weight

14mm35mm85mm200mm600mm

▲ 150mm

Max aperture

f/2.8

f/5.6

f/11

Constant Aperture

Near focus25' 3"

Far focus28' 3"

Total DOF3' 1"

Hyperfocal457' 6"

Subject distance26' 8"

Focal length150 mm

Aperturef/5.6

SensorFull Frame

Illustrative scene preview based on this lens's focal length, aperture, and sensor coverage.

This preview uses 150mm, f/5.6, and Full Frame. Subject distance is estimated to keep lens previews comparable.

Min aperture: f/5.6

Optics

Optical construction: 5 elements in 4 groups

Focusing

Minimum focus: 1.5 m

Physical

Weight: 529 g
Dimensions: ⌀82mm × 105mm
Filter thread: 67 mm
Color: Black

Recommended Use

Ideal for: Portraits, Travel, Wildlife

Release year: 2026
Announced: Mar 10, 2026
Approx price: $649 USD

The best

Autofocus reflex telephoto — compact, creative, portable

Also

5 elements in 4 groups · 67mm filter · 529 g · USB-C firmware

Summary

The Kase 150mm f/5.6 AF Reflex is an innovative catadioptric (mirror) telephoto lens designed for Nikon Z-mount full-frame mirrorless cameras. Unlike conventional telephoto optics, it uses a mirror-based optical system of 5 elements in 4 groups that results in an exceptionally compact and lightweight body weighing just 529 g at 105 mm in length — remarkable for a 150mm telephoto prime.

A key differentiator is its autofocus capability — a rare feature in reflex lens design. It includes an AF/MF switch for seamless mode switching, a 67mm front filter thread compatible with both screw-in and magnetic filter systems, and a USB-C port for firmware updates that ensures long-term compatibility with the Nikon Z ecosystem.

The lens produces the characteristic donut-shaped bokeh unique to mirror optics, offering a distinctive creative look. With a minimum focus distance of 1.5 m, it is well suited for portraiture, wildlife, and travel photography. Its aluminum alloy construction guarantees field durability, and at a pre-order price of $649, it offers an accessible entry point into reflex telephoto optics.