Optoma - 21.50 mm to 28.70 mmf/2 - Short Throw Zoom Lens

The Optoma 21.50 mm to 28.70 mm f/2 Short Throw Zoom Lens is a purpose-built projection accessory designed to unlock new levels of versatility, clarity, and ease in any display space. With a practical 21.50 mm to 28.70 mm focal range, this lens covers everything from wide classroom setups to intimate conference room presentations, all while preserving brightness and edge-to-edge sharpness thanks to its 1.2x optical zoom. Its fast f/2 aperture helps you achieve standout image quality in a variety of lighting conditions, letting you maintain vivid colors and strong subject separation without over-relying on digital brightness. The short throw design reduces the distance needed between projector and screen, giving you more placement flexibility and minimizing shadows from presenters for smoother, more natural presentations. Built for efficient, reliable performance, this compact lens integrates seamlessly with Optoma projectors, delivering consistent color fidelity, crisp detail, and robust construction that stands up to daily use in classrooms, corporate spaces, creative studios, and on-demand event environments. Whether you’re delivering lectures, streaming media, or showcasing dynamic content, this lens is engineered to help you frame scenes quickly, focus precisely, and transition between setups with minimal effort. In short, it’s a practical, high-performance upgrade that elevates projection quality while preserving portability, making it a standout choice for educators, business professionals, and rental fleets alike.

• 1.2x Optical Zoom with Flexible Framing: Seamlessly move from wide to mid-tele perspectives (21.50 mm to 28.70 mm) without sacrificing image integrity, enabling rapid re-framing for different screen sizes and seating layouts.
• Bright f/2 Aperture for Clearer Images: The fast aperture helps maintain brightness and color vibrancy in rooms with ambient light, delivering punchy foregrounds and smoother gradations across the image.
• Short Throw Design for Small Spaces: Engineered to minimize the distance between projector and screen, reducing shadowing from presenters and enabling flexible installations in classrooms, studios, and compact conference rooms.
• Compact, Lightweight Build: A portable, easy-to-maneuver lens that fits a wide range of projector rigs, enabling quick swaps, mobile deployments, and simplified maintenance in rental or education environments.
• Designed for Optoma Projectors: Optimized integration with Optoma imaging systems and color profiles, helping to preserve image quality, consistency, and reliability across supported models.

Technical Details of Optoma - 21.50 mm to 28.70 mm f/2 Short Throw Zoom Lens

• Focal Length: 21.50 mm – 28.70 mm
• Maximum Aperture: f/2
• Optical Zoom: 1.2x
• Throw Type: Short throw designed for projection
• Compatibility: Designed for Optoma projectors
• Design and Build: Compact, lightweight lens suitable for portable installations and quick mounting

how to install Optoma 21.50 mm to 28.70 mm f/2 Short Throw Zoom Lens

To install the Optoma short throw zoom lens, start with the projector powered off and unplugged. If your projector currently has a lens, remove it following the manufacturer’s instructions, ensuring you keep any securing screws in a safe place. Align the new lens with the projector’s lens mount, making sure the alignment marks line up to prevent tilting or misalignment. Carefully insert the lens and rotate the locking ring or screws as directed by the projector’s assembly guide until the lens sits firmly in place without any play. After mounting, attach any protective caps or covers as required and secure the camera/target alignment if your setup includes alignment tools. Power on the projector and navigate to the lens control or settings menu to perform a quick focus and zoom calibration. Use the 21.50 mm to 28.70 mm range to frame your screen, adjusting focus until the image is sharp edge-to-edge. If your environment requires keystone correction, apply it sparingly to maintain image geometry, and verify brightness and color consistency across the full screen. Finally, test a few typical content scenarios—text, graphics, and video—to ensure the lens maintains even brightness and color fidelity across the projectors’ throw distance. With the lens properly mounted, you will enjoy a lightweight, reliable upgrade that delivers flexible projection options for a wide range of rooms and use cases.

Frequently asked questions

• Q: What focal range does this lens cover? A: It covers 21.50 mm to 28.70 mm, offering a 1.2x optical zoom for flexible framing from wide to mid-tele in projection setups.
• Q: What is the maximum aperture? A: The lens features a fast maximum aperture of f/2, designed to boost brightness and color richness in a variety of lighting conditions.
• Q: Is this lens suitable for all Optoma projectors? A: It is designed for Optoma projectors with compatible lens mounts; always verify compatibility with your specific model before installation.
• Q: How does the short-throw design help? A: The short-throw design reduces the distance between the projector and screen, minimizing presenter shadows and enabling flexible placements in tighter spaces.
• Q: What makes this lens a good upgrade? A: Its combination of flexible focal range, bright aperture, compact form, and Optoma‑optimized imaging ensures sharper images, easier installation, and improved versatility for classrooms, meeting rooms, and creative environments.