VILTROX AF 25mm F1.7 Air E Lens for Sony E Mount, f/1.7 Large Aperture APS-C Auto Focus Prime Lens Compatible with Sony E-Mount Mirrorless Cameras ZV-E10 II EV10 a6700 a6600 a6400 a7c ii a7rv a7iii
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AI Verdict
This 170g Viltrox 25mm F1.7 APS-C lens with STM autofocus is for Sony E-mount users needing a compact 38mm equivalent prime for everyday shooting.
This lens is a strong fit for Sony E-mount APS-C users seeking a compact, fast prime. Its 170g weight and f/1.7 aperture make it ideal for everyday carry and low-light scenarios, especially with its 38mm full-frame equivalent focal length.
If you need closer focusing capabilities, look for a lens with a higher maximum magnification ratio, ideally 0.25x or greater.
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Pros
- The lens weighs only 170g, making it pocket-friendly for on-the-go shooting.
- Its f/1.7 maximum aperture allows for shooting in low-light conditions and creating shallow depth of field.
- The STM focus motor provides quiet autofocus, supporting face and eye recognition for both photos and videos.
- Optical construction includes 1 ED, 2 aspherical, and 2 high refractive index elements to reduce chromatic aberration and distortion.
- It features a USB-C interface for firmware updates, ensuring future compatibility and performance improvements.
- The 37.5mm full-frame equivalent focal length offers a moderately wide angle suitable for various subjects.
Cons
- The lens lacks weather sealing, which limits its use in challenging environmental conditions.
- It exhibits some point light ghosting when shooting wide open.
- The maximum magnification ratio is 0.11x, making it unsuitable for close-up photography.
- Users report some difficulties with flaring against bright light sources.
- There is no image stabilization built into the lens.
Dimension Scores
It offers sharp images across the frame at f/1.7 and good contrast, with 1 ED, 2 aspherical, and 2 high refractive index elements reducing aberrations.
The leadscrew-type STM motor provides fast and accurate autofocus, supporting face and eye detection, and performs quickly in continuous AF mode.
The noiseless STM motor, minimal focus breathing, and support for face and eye recognition make it a capable lens for video recording.
Weighing only 170g and being one palm wide, it's exceptionally lightweight and compact, easily fitting into a pocket.
Best For
- Street photography with a lightweight setup on Sony APS-C cameras.
- Casual portraiture with a 38mm full-frame equivalent perspective.
- Low-light photography where a wide aperture is crucial.
- Video recording on Sony E-mount cameras that benefit from quiet autofocus.
Not Recommended For
- Macro photography due to its 0.11x maximum magnification ratio.
- Shooting in harsh weather without additional protection.
- Users who require built-in optical image stabilization.
Watch Out For
- The lens shows point light ghosting when used at f/1.7.
- It has a low 0.11x maximum magnification ratio, meaning it won't get you close for small details.
- Flaring can be an issue when shooting directly into bright light sources.
- There's no weather sealing, so you'll need to be careful with dust or moisture.
Full Specifications
| ASIN | B0DSLBC4ZR |
| Brand | VILTROX |
| Lens Type | Standard |
| Item Weight | 14.1 ounces |
| Manufacturer | Weiying |
| Product Dimensions | 2.1 x 2.5 x 2.5 inches |
| Compatible Mountings | Sony E |
| Camera Lens Description | VILTROX AF 25mm F1.7 E Lens for Sony E Mount |
| Focal Length Description | VILTROX AF 25mm F1.7 E Lens for Sony E Mount |
What Buyers Say
Users frequently highlight the lens's surprising sharpness, especially considering its price point, even wide open at f/1.7. The autofocus system, driven by an STM motor, is consistently praised for being both fast and quiet, which is a big win for video shooters. While the build is mostly plastic, it feels sturdy enough, and the metal mount adds a touch of durability. However, some users have noted issues with flaring when shooting into bright lights and a lack of weather sealing.
“Dude, this lens is crazy sharp for what I paid, like, I didn't expect it to be this good, but the ghosting at night is kinda annoying and I wish it was sealed for my hikes.”
Common Praise
- Sharpness across the frame, even at f/1.7.
- Fast and quiet STM autofocus performance.
- Smooth, dreamy bokeh with 9 aperture blades.
- Extremely lightweight at 170g, making it easy to carry.
- Minimal focus breathing, which is beneficial for video.
Common Complaints
- Point light ghosting when shooting wide open.
- Susceptibility to flaring when bright light sources are in the frame.
- Absence of weather sealing.
- Low 0.11x maximum magnification ratio, limiting close-up shots.
- Plastic focus ring, though it turns smoothly.
Ownership Tips
- The lens feels more substantial than its plastic construction might suggest, thanks to the metal mount.
- The autofocus is genuinely silent, making it unobtrusive during video recording.
- The compact size means it balances well on smaller Sony APS-C bodies without feeling front-heavy.
- The lack of weather sealing becomes a real concern when shooting outdoors in unpredictable conditions.
Frequently Asked Questions
Is this lens compatible with full-frame Sony E-mount cameras?
Yes, it is compatible, but it will operate in APS-C crop mode, effectively using only the central portion of your camera's sensor.
Does this lens have image stabilization?
No, the Viltrox AF 25mm F1.7 Air E lens does not feature image stabilization.
What is the filter thread size?
The lens has a 52mm filter thread.
Can I update the firmware on this lens?
Yes, it includes a USB-C port for firmware updates.
Is the autofocus quiet enough for video?
The STM focus motor is described as noiseless and quiet, making it suitable for video recording without distracting audio.
Buying Guide
When you're looking at a prime lens like this, you're trading zoom flexibility for image quality and a wider aperture. The 'f/1.7' means it lets in a lot of light, which is awesome for blurry backgrounds and shooting when it's dark. The '25mm' is your fixed focal length; on an APS-C camera, it gives you a view similar to a 38mm lens on a full-frame camera, which is a classic 'normal' perspective.
F1.7 Large Aperture
This number tells you how wide the lens can open up. A lower number like f/1.7 means it can open very wide, letting in more light. This helps you shoot in dim conditions without cranking up your camera's ISO too high, and it creates that creamy, out-of-focus background (bokeh) that makes your subject pop.
25mm Focal Length (38mm equivalent)
This is how 'zoomed in' the lens is, but since it's a prime, it's fixed. On your APS-C camera, 25mm gives you a field of view similar to what a 38mm lens would on a full-frame camera. Think of it as slightly wider than your natural vision, making it versatile for street scenes, environmental portraits, or just capturing a bit more of the scene.
STM Autofocus Motor
This is the engine for your lens's autofocus. An STM (Stepping Motor) is known for being quiet and smooth, which is super important for video so your microphone doesn't pick up lens noise. It also helps with precise focusing for stills, especially with features like eye-tracking.
170g Weight
This is how much the lens weighs. At 170 grams, this lens is incredibly light. This matters a lot for portability – you'll be more likely to carry it with you everywhere – and for balance on smaller mirrorless cameras, preventing your setup from feeling front-heavy and uncomfortable to hold for long periods.
Alternatives
If you need to get closer to small subjects, look for lenses with a higher maximum magnification ratio, typically 0.25x or more. For shooting in adverse weather, prioritize lenses explicitly stating weather sealing.
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