Whether you’re building a surveillance system, a time-lapse project, or a high-zoom stills setup, C-mount telephoto lenses offer reach without bulky gear. This guide highlights top-rated C-mount telephoto and varifocal options compatible with standard CS adapters, IMX477 Raspberry Pi HQ Camera, and similar platforms. Each listing covers focal range, build quality, and control features to help you compare performance for distant subjects and tight shots alike.
| Product | Brand | Focal Range | Notes |
|---|---|---|---|
| Arducam 8-50mm C-Mount Zoom Lens | Arducam | 8-50mm | Includes C-CS adapter; manual focus and iris for precise control |
| Zowietek 5-50mm C-Mount Zoom Lens | zowietek | 5-50mm | Low distortion; suitable for IMX477 and industrial cameras |
| Arducam Telephoto C-Mount Lens, 50mm | Arducam | 50mm | Long focal length for distant subjects; 10°×7° FOV on 1/2.3″ sensor |
| Arducam 4-12mm Varifocal C-Mount Lens | Arducam | 4-12mm | Wide to medium telephoto; adjustable FOV on IMX477 |
| Xenocam 4-12mm Varifocal C-Mount Lens | XENOCAM | 4-12mm | Adjustable focal length with C-CS adapter included |
Arducam 8-50mm C-Mount Zoom Lens — Flexible Telephoto Zoom
The Arducam 8-50mm C-Mount Zoom Lens is designed to adapt the Raspberry Pi High Quality Camera with a CS-mount world, offering a compact, adjustable focal range. The included C-CS adapter lets you quickly switch from standard to compact CS setups, enabling versatile field use. With a wide 8-50mm focal span, you can focus from moderate close-ups to distant subjects with manual focus and aperture control for precise exposure and depth of field. Its telephoto capability helps you capture sharp subjects beyond typical fixed-lens limitations.
Key features include:
– Adaptation for CS-mount Raspberry Pi HQ Camera with an included C-CS adapter
– 8-50mm adjustable focal length for flexible framing
– Manual focus and aperture rings for tactile control
– Longest focal length of 50mm supports distant subjects
Zowietek 5-50mm C-Mount Zoom Lens
The Zowietek 5-50mm Zoom Lens is a versatile, low-distortion option for IMX477 Raspberry Pi HQ Cameras and similar industrial models. Its 5-50mm range covers wide-to-telephoto perspectives, and the lens is designed for manual focus and iris adjustments, enabling precise control over depth of field and exposure. The lens is compatible with relevant camera families (including ZowieCAM CS mount variants) and is suitable for overhead surveillance, product detail shots, and nature videography where subject distance changes frequently.
Highlights include:
– 5-50mm focal range with low distortion
– Manual focus and iris control for customization
– Compatibility with IMX477-based cameras and ZowieCAM CS-mount variants
– Robust optical design suited for industrial and creative applications
Arducam Telephoto C-Mount Lens, 50mm Focal Length
This telephoto option focuses on delivering a longer reach with reliable performance on Raspberry Pi HQ Camera setups. With a 50mm focal length, it offers a narrower field of view and increased subject magnification, making it well-suited for distant subjects, wildlife, or surveillance scenarios. The lens provides a reasonable field of view at 10°(H)×7°(V), and approximately 7°(H) on 1/2.3″ sensors, ensuring consistent framing across common camera configurations.
Notable points:
– 50mm focal length for distant subjects
– Tested compatibility with 12MP RPi HQ Camera arrays
– Acceptable image quality with minimal shading and dark corners
– Useful FOV for telephoto shooting on small-sensor cameras
Arducam 4-12mm Varifocal C-Mount Lens
The Arducam 4-12mm Varifocal Lens provides a practical middle ground between wide and telephoto shots. The 4-12mm range makes it adaptable for interiors or compact outdoor scenes, and the included C-CS adapter ensures compatibility with Raspberry Pi HQ Camera modules. Manual focus and aperture rings give you tactile, repeatable control for sharp landscapes or detailed macro-like telephoto shots at a distance.
Key aspects include:
– 4-12mm focal range with varifocal capability
– C-CS adapter for quick integration with CS-mount cameras
– Wide FOV at shorter focal lengths and tighter framing at longer focal lengths
– Clear optics designed to minimize distortion for consistent results
Xenocam 4-12mm Varifocal C-Mount Lens
The Xenocam 4-12mm Varifocal Lens mirrors the Arducam 4-12mm in offering a versatile focal range and simple CS adapter compatibility. It emphasizes a predictable field of view across the zoom range, with manual focus and iris adjustments for refined control. This makes it suitable for projects that transition between landscapes and tighter compositions without swapping lenses.
Important characteristics:
– 4-12mm focal range with manual focus and iris
– C-CS adapter included for Raspberry Pi HQ Camera setups
– Field of view shifts from wide to telephoto as you zoom
– Robust construction designed for consistent image quality
Buying Guide: Key Considerations for C-Mount Telephoto Lenses
- Camera compatibility: Most options here target IMX477-based Raspberry Pi HQ Cameras or similar CS-mount devices. Check your sensor size (1/2.3″, 1/2.3″ Z?) and mount type to ensure proper fit and clear optical alignment.
- Focal range and use case: Wider ranges (4-12mm, 5-50mm) cover creative versatility, while fixed telephotos (50mm, 75mm) excel at distant subjects. Consider whether a varifocal lens supports your planned framing changes without swapping lenses.
- Manual controls: Lenses with manual focus and aperture rings enable precise exposure and depth control, especially in variable lighting or when shooting through windows or reflective surfaces.
- Aperture and light transmission: Lenses with larger maximum apertures (lower f-number) capture more light, helping in low-light telephoto shots. Note that long focal lengths can reduce light throughput, so a well-lit scene is beneficial.
- Distortion and optical quality: Low-distortion designs help keep lines straight in architectural or macro-like scenes. Verify field-of-view consistency across focal lengths if your project demands predictable framing.
- Build quality and lens shading: A durable housing and consistent shading performance reduce post-processing needs. Some lenses are noted to avoid shading or dark corners, which matters for full-frame or higher-resolution sensors.
- Adapter and mounting: Ensure included adapters (C-CS) match your camera module. If you plan to switch between CS and C mounts, confirm compatibility and any needed spacers or mounts for optical alignment.
- Software and calibration: Some lenses require manual calibration to optimize exposure and focus. Have a plan for initial testing, MTF checks, and potential focus stacking if your project involves depth-heavy scenes.
Comparative summary
For users prioritizing flexibility and budget, zoom options like the 8-50mm or 5-50mm provide broad framing ability and quick adjustments. Fixed telephotos such as the 50mm lens deliver greater reach with a simpler optical path, which can yield consistent results in distance-focused projects. Varifocal 4-12mm lenses strike a balance between field of view and magnification, ideal for versatile shooting with a single lens. The Xenocam variant offers similar performance with its own build quality considerations. Each option has strengths depending on whether your focus is general-purpose telephoto reach, precise focus control, or a mix of close-ups and long-range shots.