TTArtisan's AF 24mm F3.8 mini is an unusual lens: a full-frame autofocus prime that weighs about 57g, and costs $99. It is not designed to compete with premium 24mm primes on specification. It is built around a simpler question -- would a capable full-frame camera get carried more often if the lens added almost nothing to its size?
Independent reviews have now appeared, and the overall picture is fairly consistent: the lens is more capable optically than its dimensions suggest, but its fixed aperture and lack of manual focus are real limitations rather than marketing footnotes. This article summarizes what those early tests found and where the lens makes sense.
What It Is:
The AF 24mm F3.8 mini covers a full-frame sensor with an 84° angle of view. The optical design is 6 elements in 6 groups, including ED and aspherical elements. Minimum focus distance is 0.3m, autofocus is driven by a VCM (voice coil motor), and the lens uses a metal mount with a USB-C port for firmware updates. A sliding lever on the front doubles as a lens cover.
The lens is offered in Sony E and Nikon Z mounts. Because the aperture is fixed at f/3.8 and there is no focus ring, exposure and focus are controlled entirely from the camera; there is also no front filter thread.
What Reviewers Are Saying:
Early hands-on and full reviews -- including Dustin Abbott's independent test on a 61MP Sony a7R V, TTArtisan's own launch video, and several side-by-side comparisons with the Viltrox AF 28mm F4.5 -- broadly agree on the following points:
- Sharpness: strong center and mid-frame detail at f/3.8, with some softening toward the corners. Because f/3.8 is the only aperture, there is no stopping down to recover the edges.
- Contrast and color: reviewers describe good contrast and natural color, with Abbott noting noticeably higher contrast than the Viltrox 28mm F4.5.
- Distortion and vignetting: slight pincushion distortion and a moderate amount of vignetting -- modest for a lens this small.
- Chromatic aberration: minor longitudinal and lateral fringing in high-contrast areas.
- Flare: veiling flare is limited, but colored green and purple ghosting can appear when a bright light source is in the frame; there is no hood mount.
- Autofocus: quiet and generally reliable for stills, with smooth touch-to-focus for video; focus breathing is noticeable.
- Close focus: 0.3m is not especially close for a 24mm, and without manual focus, precise close-up framing takes some trial and error.
- Bokeh: roughly kit-lens level, though detail and contrast are better than most kit lenses.
Trade-offs to Consider:
- Fixed aperture. f/3.8 is the only aperture. You cannot stop down for more depth of field, use slow shutter speeds in daylight, or create sunstars.
- No filter thread. Screw-in ND and polarizing filters are not an option, which limits long-exposure and reflection control and complicates video work that requires a fixed shutter speed.
- No manual focus ring. Zone focusing and manual focus pulls are not possible; autofocus is the only option.
- No weather-sealing claim. It is a fair-weather, carry-everyday lens rather than an all-weather one.
- Compatibility caveats. Reports indicate older Sony bodies (a7S, a5000/a5100) have limited autofocus support and NEX cameras are unsupported; some FX-series issues have been reported with earlier firmware. Nikon Z availability has lagged behind Sony E, so confirm stock before ordering.
Who It's For:
The lens makes most sense as a second, always-with-you lens: daylight street and travel, casual documentary work, and a compact 24mm on a full-frame body such as the Sony a7C series. On Sony APS-C it behaves like a roughly 36mm-equivalent lens, which is a natural everyday focal length.
It is a weaker fit for landscape photographers who work at f/8 to f/11, long-exposure shooters who rely on ND filters, manual-focus users, and anyone who wants shallow depth of field or weather sealing from a 24mm prime.
Specification:
Focal Length: 24mm
Format: Full-Frame
Aperture: F3.8 (fixed)
Angle of View: 84°
Optical Design: 6 elements in 6 groups (including ED and aspherical elements)
Minimum Focus Distance: 0.3m
Focus: Autofocus (VCM), no manual focus ring
Filter Thread: None
Dimensions: Approx. 60 x 16mm
Weight: Approx. 57g
Mounts: Sony E / Nikon Z
Build: Metal mount, sliding lever cover, USB-C firmware port
Price & Availability:
The TTArtisan AF 24mm F3.8 mini is listed at $99 at Pergear. The Sony E version is in stock; Nikon Z availability should be confirmed on the product page before ordering.
Verdict:
The AF 24mm F3.8 mini is best understood as a deliberately constrained lens. Its value is not that it replaces a conventional 24mm prime, but that it makes a full-frame camera small enough to carry without a second thought. If that trade-off matches how you shoot, $99 buys a genuinely pocketable autofocus wide-angle; if you need aperture control, filters, or manual focus, a larger lens will serve you better.
