7artisans 7.5mm f/2.8 Mark II vs 7artisans 18mm F2.0 AF Lens: Spec Comparison
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The 7artisans 7 5mm f 2 8 mark ii vs 18mm f2 0 af lens comparison highlights two distinct APS-C primes. Both target wide-angle shooting, but they serve different needs. The 7.5mm is a manual fisheye for Nikon Z. The 18mm is an autofocus prime for Sony E. You need to decide between extreme distortion and practical wide-angle utility. This guide breaks down the key spec differences to help you choose the right tool for your camera system.
Key differences
| Aspect | 7artisans 7.5mm f/2.8 Mark II Fisheye Lens | 7artisans 18mm F2.0 AF Lens for Sony E |
|---|---|---|
| Lens Mount | Nikon Z | Sony E Mount |
| Focus Type | Manual | Autofocus STM |
| Focal Length | 7.5mm | 18mm |
| Maximum Aperture | f/2.8 | f/2.0 |
| Lens Type | Fisheye | Wide Angle |
| Minimum Focusing Distance | not listed | 0.2m |
Which one should you choose?
Choose 7artisans 7.5mm f/2.8 Mark II Fisheye Lens if
- You own a Nikon Z camera and need a manual focus fisheye lens.
- You want a 190-degree viewing angle for creative distortion or VR panoramas.
- You are comfortable with manual focusing for artistic control.
Choose 7artisans 18mm F2.0 AF Lens for Sony E if
- You use a Sony E-mount camera and require autofocus capability.
- You need a versatile 18mm focal length for landscapes or street photography.
- You want a wider f/2.0 aperture for better low-light performance and bokeh.
Verdict: The 7.5mm fisheye is a specialized tool for Nikon Z users seeking extreme wide-angle distortion. The 18mm autofocus lens is a practical choice for Sony E users who need speed and versatility. Your decision depends entirely on your camera mount and whether you prioritize manual creative control or automated convenience.
Fisheye Versus Autofocus Prime
Autofocus capability
The 7artisans 18mm F2.0 AF Lens for Sony E offers advanced autofocus performance powered by an STM stepping motor. It delivers fast, accurate, and near-silent focusing, which is essential for capturing fleeting moments or shooting video. It also supports Eye AF for both human and pet subjects. In contrast, the 7artisans 7.5mm f/2.8 Mark II Fisheye Lens relies entirely on manual focus. You must adjust the focus ring yourself to achieve sharp images. This manual approach suits deliberate composition but lacks the speed and convenience of the 18mm’s automatic system for dynamic shooting scenarios.
Aperture brightness
The 18mm lens features a maximum aperture of f/2.0, while the 7.5mm fisheye stops down at f/2.8. A wider aperture allows more light to reach the sensor, which improves performance in low-light conditions. The f/2.0 opening on the 18mm helps shorten exposure times and creates a shallower depth of field for background blur. The 7.5mm’s f/2.8 aperture is still considered large for a manual prime, but it gathers less light than the 18mm. This difference affects how well each lens handles night scenes or indoor environments without a tripod.
Field of view
These lenses provide vastly different perspectives. The 7.5mm f/2.8 Mark II is a fisheye lens that delivers a 190-degree viewing angle. This extreme wide-angle view creates a distorted, spherical effect ideal for creative panoramas or underwater photography. The 18mm lens offers a standard wide-angle perspective. Its 18mm focal length on an APS-C sensor provides a 27mm full-frame equivalent view. This perspective is more natural for landscapes, architecture, and street photography, capturing a broad scene without the dramatic distortion found in the fisheye option.
Minimum focusing distance
The 18mm lens allows you to get very close to your subjects, with a minimum focusing distance of just 0.2 meters. This capability supports close-up macro-style shots for food, flowers, or intricate details. The specification for the 7.5mm f/2.8 Mark II does not list a minimum focusing distance. Without this data, you cannot determine how close you can get to a subject with the fisheye lens. The 18mm’s stated proximity makes it more versatile for detailed work where you need to fill the frame with small objects.
Build and features
The 18mm lens includes a Type-C port for firmware upgrades and features a durable metal body with dust and splash resistance. It also comes with a square lens hood to block stray light. The 7.5mm fisheye lens is described as Version II, using new Hoya lenses and ED elements to reduce color aberration. However, the data does not mention weather sealing or firmware ports for the fisheye. The 18mm offers more modern connectivity and protection features for everyday use in various conditions.
Which lens fits your shooting style
You want fast, silent autofocus for video
The 18mm lens features an STM stepping motor that delivers fast, accurate, and near-silent autofocus. This makes it ideal for capturing fleeting moments or shooting video without audible noise. It also supports Eye AF for sharp focus on people and pets, which the manual 7.5mm fisheye cannot do.
You need ultra-wide fisheye effects for Nikon Z
If you shoot with a Nikon Z camera, this 7.5mm lens provides a 190-degree viewing angle for extreme fisheye distortion. It uses an f/2.8 aperture and ED glass to manage color difference on edges. The manual focus design suits artistic control, while the 18mm option is incompatible with your mount.
You prioritize portability and low-light performance
Weighing only 109g, the 18mm lens is significantly lighter than the 1.26-pound fisheye alternative. Its f/2.0 maximum aperture allows more light intake, helping you shorten exposure times in low-light conditions. The 0.2m minimum focus distance also enables close-up shots for food or flowers, adding versatility to your wide-angle toolkit.
The products compared
7artisans 7.5mm f/2.8 Mark II Fisheye Lens
Best for: Extreme wide-angle creative photography
- Lens Mount
- Nikon Z
- Focal Length
- 7.5mm
- Maximum Aperture
- f/2.8
- Sensor Format
- APS-C
- Focus Type
- Manual
- Lens Type
- Fisheye
View on Amazon: 7artisans 7.5mm f/2.8 Mark II Fisheye Lens Affiliate link
This is a manual fisheye lens for Nikon Z mirrorless cameras on APS-C sensors. It delivers a 190-degree viewing angle with a 7.5mm focal length. The f/2.8 maximum aperture allows more light in, which helps shorten exposure times. It uses nine groups of 11 optical elements, including two ED lenses, to reduce color difference. The build measures 2.49 by 2.49 by 2.4 inches and weighs 1.26 pounds. It suits you if you want extreme wide-angle creative shots.
Pros
- 190-degree super wide-angle viewing capability
- f/2.8 maximum aperture for improved light intake
- Two ED lenses reduce color difference on edges
- Compact physical dimensions for a fisheye lens
Cons
- Manual focus only with no autofocus motor
- Heavy at 1.26 pounds for an APS-C lens
- Limited to Nikon Z mount without adapter
Good fit if
- You want a 190-degree ultra-wide perspective
- You shoot landscapes or VR panoramas
- You prefer manual control over auto focus
Skip if
- You need automatic focusing for action
- You shoot with Sony E-mount cameras
- You want a lightweight travel lens
Verdict: 7artisans 7.5mm f/2.8 Mark II Fisheye Lens provides a massive 190-degree field of view for Nikon Z users. It fits photographers who prioritize extreme wide-angle distortion and manual operation over convenience.
7artisans 18mm F2.0 AF Lens for Sony E
Best for: Sony APS-C users seeking portability
- Lens Mount
- Sony E
- Focal Length
- 18mm
- Maximum Aperture
- f/2.0
- Sensor Format
- APS-C
- Focus Type
- Autofocus STM
- Minimum Focusing Distance
- 0.2m
View on Amazon: 7artisans 18mm F2.0 AF Lens for Sony E Affiliate link
This 7artisans lens offers an 18mm focal length with a bright f/2.0 aperture on APS-C cameras. It features fast STM autofocus and supports Eye AF for sharp portraits. Weighing just 109g, it is ultra-lightweight and includes a metal body with dust and splash resistance. The 0.2m minimum focus distance allows for close-up details. It is ideal for travel, street photography, and vlogging on Sony E mount systems.
Pros
- 109g weight for high portability
- STM autofocus with Eye AF support
- f/2.0 maximum aperture for low light
- 0.2m minimum focusing distance
- Dust and splash resistant metal body
Cons
- APS-C sensor format only
- Manual focus ring required for some adjustments
- No image stabilization listed in specs
Good fit if
- You shoot on Sony E mount cameras
- You need a lightweight lens for travel
- You want fast autofocus for portraits
Skip if
- You use full-frame cameras
- You require native stabilization
- You prefer manual focus only
Verdict: 7artisans AF 18mm f/2.0 Sony E Mount is a compact, fast lens that fits well in the hands of Sony users who prioritize portability and quick autofocus for everyday shooting.
Specifications side by side
| Spec | 7artisans 7.5mm f/2.8 Mark II Fisheye Lens | 7artisans 18mm F2.0 AF Lens for Sony E |
|---|---|---|
| Lens Mount | Nikon Z | Sony E |
| Focal Length | 7.5mm | 18mm |
| Maximum Aperture | f/2.8 | f/2.0 |
| Sensor Format | APS-C | APS-C |
| Focus Type | Manual | Autofocus STM |
| Minimum Focusing Distance | not stated | 0.2m |
| Intended Use | not stated | Vlogging |
| Aperture | f/2.8 | f/2.0 |
| Lens Type | Fisheye | not stated |
| Dimensions | 2.4 × 2.49 × 2.49 inches | 2.36 × 2.6 × 2.6 inches |
| Weight | 1.26 pounds | not stated |
| Size | For Nikon Z Mount | not stated |
| Color | Version Ⅱ | not stated |
| Model | 7artisans 7528-3 | not stated |
Frequently asked questions
Is the 7artisans 7.5mm lens compatible with Canon or Sony cameras?
No. The 7artisans 7.5mm f/2.8 Mark II Fisheye Lens is designed exclusively for Nikon Z Mount. It will not fit Sony E or Canon RF mounts without significant modification, which is not recommended. You must use a Nikon Z body to use this lens.
Does the 7artisans 18mm lens work with Nikon Z cameras?
No. The 7artisans 18mm F2.0 AF Lens is built for Sony E-Mount. It is not natively compatible with Nikon Z cameras. You would need an adapter, but autofocus may not function correctly. This lens is strictly for Sony APS-C users.
Which lens is lighter and more portable?
The 7artisans 18mm F2.0 AF Lens is the more portable option. It weighs less than the 7.5mm fisheye, though exact weight is not listed. The 7.5mm lens weighs 1.26 pounds. The 18mm measures 2.6 inches in width and height, making it compact for Sony users.
Can I use the 7.5mm fisheye on full-frame cameras?
No. The 7artisans 7.5mm f/2.8 Mark II is specified for APS-C sensor format. Using it on a full-frame camera may cause heavy vignetting or black corners. It is designed to cover the smaller APS-C sensor area completely.
Does the 18mm lens have autofocus?
Yes. The 7artisans 18mm F2.0 AF Lens features autofocus capability. It uses an STM stepping motor for fast and accurate focusing. This is ideal for video and quick shots. The 7.5mm fisheye is manual only, so you must focus by hand.
What is the maximum aperture of the 7artisans 18mm lens?
The maximum aperture is f/2.0. This allows for more light intake than the 7.5mm lens, which has an f/2.8 aperture. The f/2.0 setting helps in low-light situations and provides shallower depth of field for the 18mm prime.
Is the 7.5mm lens a standard wide-angle or a fisheye?
It is a fisheye lens. The 7artisans 7.5mm f/2.8 Mark II provides a massive 190-degree field of view. This creates extreme wide-angle distortion. It is not a standard rectilinear wide-angle lens. You get a curved, immersive perspective suitable for creative photography.
Which lens is better for video shooting?
The 7artisans 18mm F2.0 AF Lens is better for video. It offers autofocus with an STM motor for smooth, near-silent focusing. The 7.5mm fisheye requires manual focus, which is slower and less precise for video. The 18mm is also designed for portability.