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Viltrox AF 28mm f/4.5 Z specifications and in-depth review

Viltrox AF 28mm f/4.5 Z

Manufacturer: Viltrox

The Viltrox AF 28mm f/4.5 is a compact prime wide-angle lens designed for Nikon Z mount cameras. Tipping the scales at just 80 g, it offers a notably lightweight build without sacrificing build quality, and it features a weather-sealed, metal mount construction that adds durability for everyday use. A reversible lens hood is included in the box, and the front element does not rotate during focusing, which makes working with polarizing filters straightforward.

Optically, the lens covers a 73.42° angle of view at its fixed 28 mm focal length and delivers a maximum magnification of 0.11x with a minimum focus distance of 0.35 m. The aperture is fixed at f/4.5 across the full range and is shaped by 14 rounded blades for smooth out-of-focus rendering. Autofocus is handled by a built-in silent focus motor that also supports full-time manual focus override, while infinity focus capability is confirmed in the specification data. There is no optical image stabilization built into this lens.

Pros
  • Weighs only 80 g, making it easy to carry and reducing fatigue during extended use
  • Weather-sealed construction with a metal mount adds durability and resistance to light moisture
  • The front element does not rotate during focusing, which simplifies use of polarizing or graduated filters
  • A silent built-in focus motor allows autofocus to operate without audible noise
  • Full-time manual focus lets the user adjust focus manually at any point without disengaging autofocus
  • Includes a reversible lens hood, adding practical storage convenience alongside flare control
Cons
  • Fixed f/4.5 aperture limits light intake in low-light conditions with no wider option available
  • No built-in optical image stabilization, relying entirely on in-body stabilization if available
  • Maximum magnification of 0.11x makes the lens unsuitable for close-up or macro work
  • Single fixed focal length offers no compositional flexibility without physically repositioning
Who is this for?

This lens suits photographers who prioritize a lightweight, portable kit for everyday wide-angle shooting — street photography, travel, and casual documentary work all align well with its 28 mm field of view and 80 g body. The weather-sealed construction with a metal mount makes it a reasonable choice for those who occasionally shoot in unpredictable outdoor conditions. Users who frequently work with polarizing or graduated filters will also appreciate the non-rotating front element, which eliminates the need to readjust filters after each focus change. The silent autofocus motor and full-time manual override add further appeal for anyone shooting in quiet environments such as events or candid situations.

Who is this NOT for?

Photographers who regularly work in low-light or indoor environments may find the fixed f/4.5 aperture limiting, as it allows relatively little light through the lens compared to faster wide-angle options, and the absence of optical image stabilization means camera shake can become a concern at slower shutter speeds. The lens is equally unsuitable for anyone needing close-up or macro capabilities, given its 0.11x maximum magnification and 0.35 m minimum focus distance. Those who prefer compositional flexibility without physically moving will also find the fixed focal length restrictive, as there is no zoom range to work with.

General info:

lens type Prime, Wide-angle
lens mount Nikon Z
is weather-sealed (splashproof) ✓
Has a metal mount ✓
weight 80 g
Front element doesn't rotate ✓
Includes lens hood ✓
Lens hood is reversible ✓
filter size 65.3 mm

The Viltrox AF 28mm f/4.5 is a prime wide-angle lens built for the Nikon Z mount, weighing just 80 g and accepting filters at a 65.3 mm diameter. Its construction includes a metal mount and weather-sealed (splashproof) body, adding physical resilience to an otherwise compact form. The front element does not rotate during focusing, which simplifies the use of certain filter types. A lens hood is included in the package and can be reversed for storage convenience.

Optics:

maximum focal length 28 mm
minimum focal length 28 mm
has built-in optical image stabilization ✕
maximum angle of view 73.42°
minimum angle of view 73.42°
magnification 0.11x
optical zoom 1x

This lens has a fixed 28 mm focal length, meaning there is no zoom range — the angle of view sits at a constant 73.42° with 1x optical zoom. It reaches a maximum magnification of 0.11x, suited for general wide-angle shooting rather than close-up work. Built-in optical image stabilization is not included in this lens.

Aperture:

wide aperture (main camera) 4.5f
widest aperture at maximum focal length 4.5f
aperture blades 14
Has rounded aperture blades ✓
smallest aperture at maximum focal length 4.5f
smallest aperture at minimum focal length 4.5f

The lens operates at a fixed aperture of f/4.5 across its entire range, with both the widest and smallest aperture sitting at f/4.5 regardless of focal length. The aperture diaphragm is built with 14 rounded blades, a configuration that tends to produce a smoother, more circular shape across the aperture range.

Focus:

Can focus to infinity ✓
Has focus motor ✓
Has full-time manual focus ✓
has a silent focus motor built into the lens ✓
minimum focus distance 0.35 m

The lens includes a built-in focus motor that operates silently, making it suitable for situations where noise from the autofocus mechanism could be disruptive. Full-time manual focus override is supported, allowing the focus ring to be adjusted at any point without switching out of autofocus mode. The lens can focus as close as 0.35 m at its nearest point and is also capable of focusing to infinity.

Benchmarks:

Final Verdict

The Viltrox AF 28mm f/4.5 Z is a compact, well-built prime lens that makes a clear case for itself among Nikon Z mount users who value portability and practical build quality over outright optical speed. At just 80 g with a weather-sealed metal mount and a silent, full-time manual focus motor, it covers the essentials for wide-angle shooting in a form factor that is easy to carry and straightforward to use. The fixed f/4.5 aperture and absence of optical stabilization do define its boundaries — this is not a lens for demanding low-light work or close-up subjects — but within its intended scope of everyday wide-angle photography, it delivers a focused and coherent set of specifications. For Nikon Z shooters looking for a lightweight wide-angle option with solid construction and reliable autofocus, it represents a well-defined tool with a clear purpose.