SKU: 92421581356

Optoma - 21.50 mm to 28.70 mmf/3 - Standard Throw Zoom Lens

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Description

Optoma - 21.50 mm to 28.70 mmf/3 - Standard Throw Zoom LensOptomas 21. 50 mm to 28. 70 mm f 3 Standard Throw Zoom Lens is a precision projection accessory built for versatility, creativity, and reliable performance. This 1. 3x optical zoom lens expands your projection toolkit, letting you adapt quickly to a wide range of room sizes and throw distances without swapping lenses. Whether youre teaching in a classroom, delivering a high stakes business presentation, or enjoying immersive home entertainment, this

Optoma’s 21.50 mm to 28.70 mm f/3 Standard Throw Zoom Lens is a precision projection accessory built for versatility, creativity, and reliable performance. This 1.3x optical zoom lens expands your projection toolkit, letting you adapt quickly to a wide range of room sizes and throw distances without swapping lenses. Whether you’re teaching in a classroom, delivering a high-stakes business presentation, or enjoying immersive home entertainment, this lens enhances image sharpness, color fidelity, and overall clarity. The f/3 lens aperture balances brightness with depth of field, ensuring vivid, legible text and crisp graphics even in rooms with moderate ambient light. Its compact, robust construction is designed to withstand daily classroom and meeting-room usage while maintaining smooth, precise focus and easy handling. Designed to work with Optoma projectors that support interchangeable lenses, this standard throw zoom lens makes it effortless to tailor image size and throw ratio on the fly, enabling you to frame the screen perfectly for any audience. The result is consistent brightness across the screen, reduced keystone distortion, and a more natural, lifelike projection that brings content to life with minimal setup. If you value flexibility, fast response, and dependable image quality, this Optoma lens delivers an essential upgrade to your projection system, enabling dynamic presentations, engaging lessons, and entertaining home cinema experiences in a single, compact accessory.

  • Versatility in every throw – With a focal range of 21.50 mm to 28.70 mm and a 1.3x optical zoom, you can cover standard throw distances for many room sizes, enabling quick transitions from classroom demonstrations to full-room projections without moving the projector or changing lenses.
  • Bright, sharp images – The f/3 aperture delivers solid brightness while maintaining sharpness across the image. Expect clean, readable text, crisp line work, and vibrant color reproduction that remains consistent from center to edge, ideal for data-heavy slides and multimedia content.
  • Fast, reliable focus – This lens is designed for fast focusing with minimal hunting, helping you keep up with live presentations, lectures, and dynamic video content. The manual focus ring offers precise, tactile control for fine-tuning focus on the fly.
  • Compact, durable design – Engineered for everyday use, the lens features a compact footprint and a robust build that fits easily into crowded setups. Its compatibility with Optoma projector lens mounts ensures a secure, stable fit and long-term reliability.
  • Creative projection options – The standard throw capability and smooth zoom allow for a range of creative setups, from close-up product demonstrations to wide-angle room-filling displays, giving you flexibility to adapt to different audiences and environments without changing equipment.

Technical Details of Optoma - 21.50 mm to 28.70 mmf/3 - Standard Throw Zoom Lens

  • Focal length range: 21.50 mm to 28.70 mm
  • Maximum aperture: f/3
  • Zoom ratio: 1.3x optical zoom
  • Projection compatibility: Standard throw lens designed for Optoma projectors with interchangeable lens mounts
  • Weight (approximate): varies by model and configuration; consult product packaging for exact specifications

how to install Optoma - 21.50 mm to 28.70 mmf/3 - Standard Throw Zoom Lens

  • Power off and unplug the projector before handling lenses to prevent damage and ensure safety.
  • Remove any existing lens following the projector’s manual instructions, taking care to keep the lens mount clean and free of dust.
  • Align the new lens with the projector’s interchangeable lens mount. Gently insert the lens, then rotate or click into place until you feel a secure engagement.
  • Tighten any locking screws or locks as required by your model. Confirm the lens is firmly attached and does not wobble or misalign.
  • Power on the projector, then use the zoom and focus controls to frame the image. Adjust the throw distance as needed to achieve the desired screen size, ensuring sharp focus across the screen.

Frequently asked questions

  • What is the focal length range of this lens? The lens covers a focal length range from 21.50 mm to 28.70 mm, enabling flexible throw distances for various room sizes.
  • What is the maximum aperture? The lens has a maximum aperture of f/3, which helps maintain brightness while delivering good depth of field for projection content.
  • What is the zoom type and ratio? It features a 1.3x optical zoom, allowing you to smoothly adjust image size without moving the projector.
  • Is this lens compatible with all Optoma projectors? It is designed for Optoma projectors that support interchangeable lenses. Always verify compatibility with your specific projector model and lens mount.
  • How should I maintain image quality? Keep the lens clean and free of dust, use the projector's lens protection when not in use, and perform periodic basic maintenance as recommended by Optoma to preserve sharpness and color accuracy.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 92421581356

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For a five month old puppy with sharp teeth it’s holding up pretty well.
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Reviewed in the United States on March 27, 2026
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Shaienne
Chelsea, US
★★★★★ 5
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Size: Medium 20", Style: 3 Knot, Pattern Name: Dog
I have a German Shepherd/Pointer mix who is 10 months old. He has been in the throes of teething and destructive exploration. He's chewed up clothing and shoes. He chewed a hole in our couch and one in our brand new mattress (He was never left home alone until this point but as my mother came to visit and my boyfriend was back at work, I had no choice but to trust him alone for about an hour a day for 3 or 4 days... he clearly didn't earn that trust). He loves ropes because he can gnaw them, whip them around, and play tug of war or fetch with them at any given time. We love ropes because they keep him occupied and relieve his desire to chew things. Unfortunately, he was destroying rope after rope after rope. Some ropes were worrisome because they would quickly start fraying and falling apart. We would have to help remove strings he has swallowed from his behind while he was out doing his business... My boyfriend's mother picked up a Mammoth TireBiter tire and rope toy for him but it was much too small. Still, he loved it and it stood up very well to his chompers despite being way too small/weak for him. Looking for a larger version of the Mammoth TireBiters, I stumbled across this rope toy and gave it a shot. Let me tell you, I don't think I will ever buy rope toys from any other brand! We have had this rope for over a month and it is still going strong. It does show some small signs of wear and tear but you would swear we bought it last week. It is very strong and durable. It has held up through many long gnawing sessions. It has been put through countless hours of fetch and tug of war with no signs of giving out any time soon. I am so in love with this rope and so is my pup!
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