
VILTROX 28mm F4.5 XF Pancake APS-C for Fuji XF, Auto Focus Wide Angle Prime Lens for Fujifilm Fuji X-Mount X-Pro2 X-Pro3 X-S10 X-T20 X-T30 XT30II X-T200 X-H2 X-H2S X-T5 X-S20 X-T50 X-M5 X-E2S
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AI Verdict
This 60g, 15.25mm thick 28mm (42mm equivalent) F4.5 prime lens is for Fujifilm X-mount users prioritizing extreme portability for daylight street and travel photography.
This lens is a situational fit for Fujifilm X-mount users who prioritize extreme portability above all else. Its 60g weight and 15.25mm thickness make it truly pocketable, but the fixed F4.5 aperture and unreliable video autofocus significantly narrow its practical applications to bright, still photography scenarios.
If you need better low-light performance or more background blur, look for lenses with a wider maximum aperture, such as F2.8 or wider.
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Pros
- Weighs only 60g and measures 15.25mm thick, making it ultra-light and slim for a Fujifilm X-mount lens.
- Features a metal body and mount, providing a surprisingly premium feel for its price point.
- Includes a USB-C port for convenient firmware updates.
- The innovative slide cap design protects the front element without needing a separate lens cap.
- Delivers sharp images in the center, especially in bright outdoor conditions.
Cons
- The fixed F4.5 aperture significantly limits low-light shooting capabilities and depth of field control.
- Lacks filter threads, preventing the use of screw-on filters like ND or polarizers.
- Video autofocus is choppy and not recommended for critical video recording.
- Image sharpness noticeably decreases towards the corners.
- The rear element is slightly exposed when the lens is off the camera, requiring careful handling to prevent scratches.
Dimension Scores
Images are sharp in the center in good light, but corners show noticeable softness.
Autofocus is efficient and precise for stills in good lighting, but struggles in dim conditions.
Video autofocus is choppy and the fixed F4.5 aperture limits exposure control for video.
Weighing 60g and measuring 15.25mm thick, it is the lightest and thinnest Viltrox lens, making it exceptionally portable.
Best For
- Street photography where a compact, unobtrusive setup is key.
- Travel photography for minimizing camera bag weight and bulk.
- Everyday walk-around shooting in well-lit environments.
Not Recommended For
- Low-light photography or indoor events due to the fixed F4.5 aperture.
- Videography that relies on smooth and consistent autofocus.
- Portrait photography requiring significant background blur.
Watch Out For
- The fixed F4.5 aperture means you have limited flexibility for exposure and depth of field, especially in changing light.
- No filter threads prevent the use of any screw-on filters, like ND filters for bright conditions or long exposures.
- Video autofocus struggles, performing choppily and unreliably, particularly in dim lighting.
- The rear element is exposed when the lens is removed from the camera, increasing the risk of accidental scratches if not handled carefully.
- Corners of images can appear softer compared to the center.
Full Specifications
| ASIN | B0DTDXY24L |
| Brand | VILTROX |
| Lens Type | Wide Angle |
| Item Weight | 6.4 ounces |
| Manufacturer | Viltrox |
| Item model number | 28mm F4.5 |
| Product Dimensions | 2.37 x 2.37 x 2.37 inches |
| Compatible Mountings | Fujifilm X |
| Focal Length Description | 28mm |
What Buyers Say
Many users are surprised by how incredibly compact and light this Viltrox 28mm lens is, often describing it as a 'chip' lens that transforms their Fujifilm X-mount camera into a truly pocketable setup. The fixed F4.5 aperture is a recurring point of discussion, limiting its use in dimmer conditions, but for its price, many find the still image quality acceptable for street and travel. The unique slide cap is a polarizing feature, praised for its innovation but also noted for the lack of filter threads.
“Dude, this thing is tiny, like a bottle cap, but the F4.5 is a real bummer indoors, and forget video unless you like things jumping around.”
Common Praise
- Weighs only 60g, making the camera setup incredibly light and easy to carry all day.
- Measures just 15.25mm thick, barely adding to the camera's depth.
- The metal body and mount feel surprisingly premium for such an inexpensive lens.
- Delivers sharp images in the center when shooting in bright outdoor conditions.
- The innovative slide cap design effectively protects the front element without needing a traditional lens cap.
Common Complaints
- The fixed F4.5 aperture makes low-light shooting difficult and limits background blur.
- Video autofocus is choppy and not suitable for serious video work.
- The absence of filter threads means screw-on filters cannot be used.
- Corners of images show noticeable softness, especially when examining closely.
- The rear element is exposed when the lens is removed, risking scratches if not handled carefully.
Ownership Tips
- The fixed F4.5 aperture means you're constantly adjusting ISO or shutter speed indoors to get a usable exposure.
- The lack of filter threads means no ND filters for bright outdoor video or long exposures, which can be frustrating.
- The slide cap is convenient for quick shooting but feels a bit fragile over time with repeated use.
- You really need to be careful when putting the lens down off-camera due to the exposed rear element, as it's easy to scratch.
- It truly makes your Fujifilm camera pocketable, fundamentally changing how you carry and use it.
Frequently Asked Questions
Is this a full-frame lens?
While designed with full-frame optics, this lens is intended for APS-C Fujifilm X-mount cameras, resulting in an equivalent focal length of approximately 42mm.
Can I use filters with this lens?
No, this lens lacks filter threads, so you cannot attach screw-on filters.
How is the autofocus performance for video?
Video autofocus is generally choppy and not recommended for critical video recording.
What is the actual focal length on my Fujifilm camera?
On an APS-C Fujifilm camera, the 28mm focal length provides a field of view equivalent to a 42mm lens on a full-frame camera.
How much does this lens weigh?
The lens weighs approximately 60g.
Buying Guide
When looking at lenses, especially pancake lenses, understand that small size often comes with trade-offs. A fixed aperture like F4.5 means you can't open it up for more light or blurrier backgrounds, which impacts how and where you can shoot. Autofocus performance can also vary significantly between lenses, especially for video.
Focal Length (28mm)
This number determines your field of view. On an APS-C camera, 28mm gives you a perspective similar to a 42mm lens on a full-frame camera, which is a classic 'normal' view, wider than a standard 50mm but not ultra-wide.
Maximum Aperture (F4.5)
This is how wide the lens can open to let in light. F4.5 is relatively narrow, meaning it needs more light than an F2.8 or F1.4 lens, and it won't create as much background blur, impacting low-light performance and subject isolation.
Weight (60g) & Thickness (15.25mm)
These numbers directly tell you how much bulk and weight the lens adds to your camera. For a pancake lens, these are crucial for portability, making your camera feel almost like a point-and-shoot, fitting into smaller bags or even pockets.
Alternatives
If you need better low-light performance or more background separation, look for lenses with a wider maximum aperture (e.g., F2.8 or F1.8). If video autofocus is a priority, research lenses specifically praised for smooth and silent video AF.



