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AstrHori 6.5mm f/2.0 APS-C Fisheye specifications and in-depth review

AstrHori 6.5mm f/2.0 APS-C Fisheye

Manufacturer: TTArtisan

The AstrHori 6.5mm f/2.0 APS-C Fisheye is a fixed-focal-length fisheye lens designed for Canon RF mount cameras. Built with a metal mount and a non-rotating front element, it covers an angle of view of 192°, making it suited for the kind of immersive, barrel-distorted imagery that fisheye optics are known for. The lens ships with a hood included and weighs 268 g, keeping the overall package relatively compact.

On the optical and mechanical side, the lens features a maximum aperture of f/2.0 with 9 rounded aperture blades, and stops down to f/22 at the minimum end. It includes a built-in silent autofocus motor with full-time manual focus override and can focus as close as 0.2 m, with infinity focus also supported. The lens does not offer built-in optical image stabilization, and its magnification is rated at 0.12x. A 64 mm filter thread is present on the front, and weather sealing adds a degree of protection against splashes and light moisture.

Pros
  • Weather sealing provides splash protection during outdoor use
  • The non-rotating front element makes it easier to use filters or accessories without readjustment during focusing
  • A silent built-in autofocus motor allows for quieter operation during video recording or discreet shooting
  • Full-time manual focus override gives direct control over focus without needing to switch modes
  • The 9 rounded aperture blades contribute to smoother bokeh when the lens is stopped down
  • A minimum focus distance of 0.2 m allows for relatively close subject work given the focal length
Cons
  • No built-in optical image stabilization, which may require other means of camera shake compensation
  • The 192° fisheye angle of view and fixed 6.5 mm focal length limit versatility to highly specific shooting scenarios
  • Low magnification of 0.12x restricts close-up detail reproduction
Who is this for?

This lens is well suited to photographers who specifically seek the extreme distortion and immersive perspective that a 192° fisheye field of view produces, such as those working in creative, artistic, or experimental photography. The weather sealing and metal mount make it a reasonable choice for outdoor shooting in light rain or dusty conditions, while the silent autofocus motor and full-time manual focus support both stills and video work where quiet operation matters. The 0.2 m minimum focus distance also opens up close-range fisheye compositions for users who want to exaggerate foreground subjects.

Who is this NOT for?

Photographers looking for a versatile everyday lens will find the fixed 6.5 mm fisheye focal length too restrictive, as it is entirely unsuited to standard portraiture, reportage, or general-purpose shooting where natural perspective and rectilinear framing are expected. The absence of optical image stabilization may be a drawback in low-light or handheld video scenarios where stabilization is needed. Additionally, the very low magnification of 0.12x makes this lens a poor fit for anyone interested in detailed close-up or macro-style work.

General info:

lens type Prime, Wide-angle, Fisheye
lens mount Canon RF
is weather-sealed (splashproof) ✓
Has a metal mount ✓
weight 268 g
Front element doesn't rotate ✓
Includes lens hood ✓
filter size 64 mm

The AstrHori 6.5mm f/2.0 APS-C Fisheye is a prime, wide-angle fisheye lens built for the Canon RF mount. It features a metal mount and weather sealing that offers splash protection during use. The lens weighs 268 g and accepts filters via a 64 mm front thread. Its front element does not rotate during focusing, which is a practical advantage when using certain accessories, and a lens hood is included in the box.

Optics:

maximum focal length 6.5 mm
minimum focal length 6.5 mm
has built-in optical image stabilization ✕
maximum angle of view 192°
minimum angle of view 192°
magnification 0.12x
optical zoom 1x

This lens has a fixed focal length of 6.5 mm with no optical zoom, and delivers a 192° angle of view across its entire range. Magnification is rated at 0.12x, and the lens does not include built-in optical image stabilization.

Aperture:

wide aperture (main camera) 2f
widest aperture at maximum focal length 2f
aperture blades 9
Has rounded aperture blades ✓
smallest aperture at maximum focal length 2f
smallest aperture at minimum focal length 22f

The lens opens to a maximum aperture of f/2 and stops down to f/22 at the minimum focal length. It uses a 9-blade diaphragm with rounded aperture blades, which helps produce smoother out-of-focus areas when the aperture is stopped down.

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 0.2 m

The lens includes a built-in silent autofocus motor and supports full-time manual focus override, allowing the focus ring to be adjusted at any time without switching modes. It can focus as close as 0.2 m and extends to infinity focus at the far end of its range.

Benchmarks:

Final Verdict

The AstrHori 6.5mm f/2.0 APS-C Fisheye is a purpose-built lens that makes no attempt to be anything other than what it is — a dedicated fisheye optic for Canon RF mount cameras. Its 192° angle of view combined with an f/2.0 maximum aperture defines both its appeal and its boundaries: it delivers a genuinely wide light-gathering capability for such an extreme focal length, while the weather-sealed metal construction and silent autofocus motor add practical reliability for real-world use. It will not serve as a general-purpose lens, and the lack of optical stabilization is worth noting for certain shooting conditions, but for photographers who have a clear creative intent for fisheye work, it offers a well-specified, solidly built option within the Canon RF ecosystem.

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