VILTROX 25mm f1.7 E-Mount Large Aperture STM APS-C Auto Focus Prime Lens for Sony E-Mount Cameras A7C A7RII A7SII A7II A7RIII A7IV A7RIV A9 A1 ZVE1 A93 A6700 A6600 A6500 A6400 FX3 ZV-E10 FX30 ZV-E10II
Want the best price and purchase timing?
Our AI advisor analyzes real-time pricing across all channels to find you the best deal.
AI Verdict
A 170g, 25mm f1.7 standard prime lens for Sony APS-C cameras, offering a 38mm full-frame equivalent focal length.
This lens is a strong fit for APS-C Sony camera owners looking for an affordable, lightweight prime. Its f1.7 aperture and 170g weight make it ideal for casual photography, travel, and capturing subjects with pleasing background blur. The 25mm focal length (38mm equivalent) is versatile for many scenarios.
If you need more robust video performance or weather protection, look for lenses with built-in optical stabilization and a more durable, sealed construction.
Regret Score™
Medium RiskLower is better — measures purchase-regret risk from real buyer complaints, review credibility, and product maturity
Issues discovered after purchase
Critically weak dimension
Amazon rating vs actual quality
Chance this product isn't for you
Pros
- F1.7 large aperture provides natural bokeh with 9 aperture blades and performs well in low-light conditions.
- STM stepping motor delivers precise autofocus and tracking focus, supporting eye/face AF.
- Weighs 170g, making it a compact and portable option for on-the-go shooting.
- Optical structure includes 12 elements in 10 groups, with 1 ED lens, 2 high refractive index lenses, and 2 aspherical lenses for image quality.
- Features a micro USB interface for convenient firmware upgrades.
- Offers sharp details in the center of the image, even at f1.7.
Cons
- Plastic construction with a 'very very loose focus ring' reported by some users.
- Lacks weather sealing, limiting use in challenging environments.
- Autofocus can be 'a little bit slow and laggy at times' for video recording.
- Exhibits a 'moderate amount of vignetting' and 'small amount of barrel distortion' without software correction.
- Corners show a 'slight fall off in sharpness' when shooting wide open.
- Does not feature optical image stabilization.
Dimension Scores
It delivers 'great sharpness' in the center at f1.7 and 'surprisingly lovely' bokeh, though corners can be soft and vignetting is present.
Autofocus is 'nice and accurately' for stills and 'almost silent', but 'a little bit slow and laggy at times' for video.
Autofocus can be slow for video, there's no optical stabilization, and the focus ring is 'very very loose'.
Weighing only 170g, it's described as 'compact and lightweight' and 'pocket-friendly'.
Best For
- Budget-conscious photographers seeking a fast prime lens.
- Travel photographers prioritizing lightweight and compact gear.
- Everyday shooting and walkaround photography due to its 38mm full-frame equivalent focal length.
- Portraiture, leveraging the f1.7 aperture for subject isolation and bokeh.
- Low-light photography where a wider aperture is beneficial.
Not Recommended For
- Professional videographers who require consistently fast autofocus and optical stabilization.
- Landscape photographers needing critical corner-to-corner sharpness at wide apertures for large prints.
- Users who frequently shoot in adverse weather conditions due to the absence of weather sealing.
Watch Out For
- The plastic focus ring can feel 'very very loose', making precise manual focus adjustments difficult.
- There is no weather sealing, so exposure to dust or moisture could be an issue.
- Autofocus performance for video can be 'a little bit slow and laggy at times'.
- Without a lens profile, users will observe a 'moderate amount of vignetting' and a 'small amount of barrel distortion' in images.
- Sharpness in the corners can show a 'slight fall off' at wide apertures, which might be noticeable in large prints.
Full Specifications
| ASIN | B0DSJ3WW7Z |
| Brand | VILTROX |
| Lens Type | Standard |
| Item Weight | 6.3 ounces |
| Manufacturer | Viltrox |
| Item model number | 25mm f1.7 |
| Product Dimensions | 2.14 x 2.52 x 2.52 inches |
| Compatible Mountings | Sony E |
| Camera Lens Description | AF 25mm F1.7 Sony E |
| Focal Length Description | 25mm f1.7 lens |
What Buyers Say
The Viltrox 25mm f1.7 surprises many with its optical performance for the price, especially its sharpness in the center and pleasing bokeh. Users frequently mention its lightweight 170g design as a major plus for portability. While autofocus is generally accurate for stills, some find it 'a little bit slow and laggy at times' for video, and the plastic focus ring can feel 'very very loose'.
“Honestly, for $176, this thing punches way above its weight, but man, that focus ring feels like it's gonna spin off sometimes, and don't even think about serious video with the AF.”
Common Praise
- Sharpness in the center, even at f1.7, is 'great'.
- The bokeh is 'surprisingly lovely' and 'fantastic' in most situations.
- Its 170g weight and compact design make it 'pocket-friendly' and easy to carry.
- Offers 'exceptional value' for its sub-$200 price point.
- The f1.7 aperture allows for good low-light performance.
- Shows 'almost no focus breathing', which is a bonus for video makers.
Common Complaints
- The focus ring is described as 'very very loose' and made of plastic.
- There is no weather sealing, which limits its use in certain conditions.
- Autofocus can be 'a little bit slow and laggy at times' when shooting video.
- Images can show a 'moderate amount of vignetting' and 'small amount of barrel distortion' without correction.
- Corner sharpness 'fall off' is noticeable at wide apertures, especially for large prints.
- The lens lacks optical image stabilization.
Ownership Tips
- You'll likely need to apply a lens profile in Lightroom or similar software to correct for barrel distortion and vignetting.
- The plastic construction, while contributing to its lightness, means you need to be careful with it in less-than-ideal weather.
- The autofocus for still photography is 'almost silent', which is a plus for discreet shooting.
- The 25mm focal length, which is about 38mm on a full-frame camera, feels 'very usable' and 'everyday'.
- The lack of optical stabilization means you'll rely on your camera's in-body stabilization or faster shutter speeds in low light.
Frequently Asked Questions
Is this lens compatible with full-frame Sony E-mount cameras?
While it can physically mount on full-frame cameras, it is designed for APS-C sensors and will operate in crop mode, resulting in a reduced resolution image.
Does this lens have image stabilization?
No, the VILTROX 25mm f1.7 lens does not feature optical image stabilization.
What is the build quality of the lens?
The lens features a plastic construction, which contributes to its light weight, but it does have a metal lens mount.
How is the autofocus performance?
The STM motor provides accurate and 'almost silent' autofocus for stills, but some users report it can be 'a little bit slow and laggy at times' for video.
Can I update the lens firmware?
Yes, the lens is equipped with a micro USB interface at the bottom for convenient firmware updates.
Buying Guide
When looking at a prime lens like this, you're trading zoom flexibility for a wider aperture and often better image quality. The 25mm focal length on an APS-C camera gives you a field of view similar to a 38mm lens on a full-frame camera, which is a classic 'normal' perspective, good for a lot of different shots. The f1.7 aperture is key for shooting in dim light and getting those blurry backgrounds.
F1.7 Large Aperture
This number tells you how much light the lens can let in. A smaller f-number like f1.7 means it lets in a lot of light, so you can shoot in darker places without cranking up your camera's ISO too high. It also creates a 'dreamy and artistic blur effect' in the background, making your subject stand out.
STM Stepping Motor
This is the type of motor inside the lens that moves the focus elements. STM motors are known for being 'almost silent' and smooth, which is especially helpful for video so you don't hear the lens focusing on your audio.
APS-C Compatibility
This lens is designed for cameras with APS-C sized sensors. If you put it on a full-frame camera, your camera will automatically crop the image, making it look like you're zoomed in more than the actual focal length, and you'll lose some resolution.
Alternatives
If this lens doesn't quite fit, consider searching for lenses with built-in optical image stabilization for smoother video, or a more robust, weather-sealed construction for outdoor use. You might also look for a different focal length if 38mm equivalent isn't your preferred perspective.
You Might Also Like
NexiGo N660P Pro 4K Webcam with Distortion-Free Lens, 1080p 60 fps Autofocus USB Streaming Camera, 3DNR, Noise-Canceling Mics & Privacy Cover, Web Cam for Gaming/Live Streaming/PC/Mac/Switch 2, Pink
$50-$99This is a 4K CMOS webcam with 3DNR and dual noise-canceling mics, designed for plug-and-play use across multiple platforms.
NexiGo N660P Pro 4K Webcam with Distortion-Free Lens, 1080p 60 fps Autofocus USB Streaming Camera, 3DNR, Noise-Canceling Mics & Privacy Cover, Web Cam for Gaming/Live Streaming/PC/Mac/Switch 2, Black
$50-$99This is a 4K 30fps or 1080p 60fps webcam with autofocus, dual noise-canceling mics, and a privacy cover, designed for streaming and video calls on various platforms.
NexiGo N660P Pro 4K Webcam with Distortion-Free Lens, 1080p 60 fps Autofocus USB Streaming Camera, 3DNR, Noise-Canceling Mics & Privacy Cover, Web Cam for Gaming/Live Streaming/PC/Mac/Switch 2, White
$50-$99This 4K webcam with 1080p 60 fps streaming, autofocus, and dual noise-canceling mics is for users needing high resolution and smooth video without external software.
4K Webcam with Autofocus & Tripod, Camera for PC Laptop with Dual Microphone, USB Computer Camera with Low Light Correction, Auto White Balance, Video Camera for Streaming, Meetings, Office, Zoom
$0-$49A 4K webcam with a CMOS sensor and f/2.8 aperture, designed for basic video calls and streaming on a budget.