1. Product Overview
The 7artisans 50mm T2.1 Hope Series Professional Cine Lens is designed for S35 frame mirrorless cameras, offering a high-quality optical solution for filmmakers. This lens provides precise control over focus and aperture, ensuring consistent image quality and cinematic aesthetics.
Key Features:
- Pure and Vivid Movie Texture: Each frame is clear and detailed, preserving the texture and color of the scene for efficient post-production.
- Excellent Picture Quality: Features a newly designed optical and mechanical structure with high-quality lenses and coatings for rich details and natural transitions.
- T2.1 Large Aperture: Allows for significant light intake, enabling shooting in low-light conditions and producing a smooth, milky out-of-focus effect.
- Minimized Breathing Effect: Engineered to suppress focus breathing, ensuring that the frame composition remains stable during focus adjustments.
- 260° Focusing Stroke: Provides precise focus control, crucial for accurate adjustments during film production.
Figure 1: 7artisans 50mm T2.1 Hope Series Cine Lens
2. Product Components
The 7artisans 50mm T2.1 Hope Series Cine Lens includes the following main components:
- Lens Body: The main structure housing the optical elements.
- Focus Ring: For manual adjustment of focus.
- Aperture Ring: For manual adjustment of the T-stop (aperture).
- Lens Mount: Sony E-Mount interface for attaching to compatible cameras.
- Front and Rear Lens Caps: For protection during storage and transport.
- Lens Hood (optional/included): To reduce flare and ghosting.
Figure 2: Lens Component Diagram
Figure 3: Side view showing focus and aperture rings
3. Setup
Attaching the Lens to Your Camera:
- Ensure your camera is powered off.
- Remove the rear lens cap from the 7artisans 50mm T2.1 lens and the body cap from your camera.
- Align the mounting index (usually a white dot or line) on the lens with the corresponding index on your camera body.
- Insert the lens into the camera mount and rotate it clockwise until it clicks into place. Do not force the lens.
- Remove the front lens cap. Your lens is now ready for use.
Detaching the Lens:
- Ensure your camera is powered off.
- Attach the front lens cap to protect the front element.
- While pressing the lens release button on your camera body, rotate the lens counter-clockwise until it detaches.
- Immediately attach the rear lens cap to the lens and the body cap to your camera to prevent dust entry.
Figure 4: Lens mounted on a camera
4. Operating Instructions
Manual Focus:
This is a manual focus lens. To adjust focus, rotate the focus ring on the lens barrel until your subject appears sharp in the viewfinder or on the camera's LCD screen. Utilize your camera's focus peaking or magnification features for precise focusing.
Aperture Control:
The aperture (T-stop) is adjusted by rotating the aperture ring on the lens. The T2.1 aperture allows for shallow depth of field and excellent low-light performance. Adjust the aperture to control the amount of light entering the lens and the depth of field in your image.
Figure 5: Lens aperture blades
5. Maintenance
- Cleaning the Lens: Use a soft, lint-free cloth or a lens brush to remove dust. For smudges, use a specialized lens cleaning solution and a microfiber cloth. Avoid touching the lens elements directly with your fingers.
- Storage: Store the lens in a cool, dry place away from direct sunlight and extreme temperatures. Always attach both front and rear lens caps when not in use. Consider using a dehumidifying cabinet if you live in a humid environment.
- Handling: Avoid dropping or subjecting the lens to strong impacts, as this can damage the optical elements or mechanical components.
6. Troubleshooting
Common Issues and Solutions:
- Lens not attaching securely: Ensure the lens is correctly aligned with the camera mount's index mark and rotated until it clicks. Check for any obstructions on the mount.
- Difficulty focusing: This is a manual focus lens. Ensure your camera's focus mode is set to manual (MF). Use focus peaking or magnification aids for accurate focus.
- Dust on images: Check both the front and rear lens elements for dust. Also, check your camera's sensor. Clean the lens as described in the Maintenance section.
- Image quality issues (softness, chromatic aberration): Ensure the lens is clean and properly focused. Test at different apertures, as some lenses perform optimally at specific T-stops.
7. Specifications
| Feature | Specification |
|---|---|
| Brand | 7artisans |
| Model Name | 50mm T2.1 Hope Series |
| Focal Length | 50mm |
| Lens Type | Standard, Prime |
| Compatible Mountings | Sony E |
| Maximum Aperture | T2.1 |
| Minimum Aperture | T2.1 |
| Focus Type | Manual Focus |
| Minimum Focal Distance | 0.6 Meters |
| Real Angle Of View | 46.8 Degrees |
| Water Resistance Level | Not Water Resistant |
8. Official Product Video
Video 1: Official video demonstrating the features and performance of the 7artisans T2.1 Hope Series Cine Lenses, including focus breathing, image quality, distortion, and flare resistance tests across various focal lengths.
9. Warranty and Support
Warranty Information:
This 7artisans product comes with a standard manufacturer's warranty. Please refer to the warranty card included in your product packaging for specific terms, conditions, and duration. Keep your purchase receipt as proof of purchase for warranty claims.
Customer Support:
For technical assistance, troubleshooting, or service inquiries, please contact 7artisans customer support through their official website or the retailer where you purchased the product. Provide your product model and purchase details for efficient service.
You can visit the official 7artisans store for more information: 7artisans Official Store