Optoma - 21.50 mm to 28.70 mmf/3 - Standard Throw Zoom Lens
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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Chad
New York, US
★★★★★ 2
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Color: Orange
I had high hopes for the PetDroid Interactive Dog Ball, especially with the newly upgraded features and promises of durable, motion-activated fun. Unfortunately, it didn’t quite live up to expectations for my furry friend. Here’s why I’m giving it 2 stars. Promising Features, Lackluster Results The idea behind this toy is fantastic: a durable, motion-activated ball that would entertain my dog without much effort on my part. The ball is supposed to roll around on its own, keeping my dog engaged and active. However, in practice, it just didn’t capture my dog’s interest. Durability I will give credit where it’s due: the ball is well-made and seems durable. It can withstand some rough handling, which is great for more aggressive chewers. Unfortunately, durability doesn’t mean much if your dog won’t play with it in the first place. Motion Activation The motion activation feature is hit or miss. While the ball does move around as advertised, it didn’t seem to move in a way that intrigued my dog. He gave it a sniff, watched it for a minute, and then walked away, unimpressed. I tried multiple times to get him interested, but he simply wasn’t having it. Lack of Engagement The biggest issue is that the ball just didn’t engage my dog at all. It might be more suitable for a different personality type or breed, but for my pooch, it was a total flop. He’s usually quite playful and curious, so I was surprised by his lack of interest. Final Thoughts Overall, the PetDroid Interactive Dog Ball might work for some dogs, but it was a miss for mine. If your dog is easily entertained by automated toys, it might be worth a try. However, based on my experience, I can’t wholeheartedly recommend it. Pros: Durable construction Motion-activated as advertised Cons: Did not engage my dog Motion activation wasn’t intriguing enough Might be more suitable for specific dog types or personalities If you decide to give it a shot, just be prepared for the possibility that your dog might not find it as entertaining as you hope. For us, it’s back to the drawing board for a more engaging toy.
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Reviewed in the United States on June 14, 2024
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Sally
Los Angeles, US
★★★★★ 4
Pup Loves It, Some Other Notes
Color: Orange
We've had this for about six months and my 75 lb, 14-month-old German Shepherd pup LOVES IT. Her favorite is "Crazy Bouncing Mode." In fact, she doesn't care much for the normal mode. She chews it a lot - even drops it in her water bowl at times - and it's still going strong. This is a great purchase. It's nice hands-off entertainment. Do know that it is heavy compared to a normal ball - if your pup likes dropping it on the ground like mine does, it will land with a hard "thud," even with the included sleeve. Hopefully you don't have downstairs neighbors. Also know that the cover that goes over the charging port is removable and your dog may choke on it if they chew it in just the right manner. Definitely only let the pup play with it while supervised. All in all, great toy.
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Reviewed in the United States on February 11, 2026
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RR
Waukegan, US
★★★★★ 5
So Far So Good
I adopted a young adult dog less than 2 weeks ago. She had spent over 12 hours a day in a crate and has excessive energy and anxiety built up. She is a strong chewer. So far, out of 6 toys, this is the only one still in one piece. It appears sturdy and extra bouncy. So much better than regular tennis balls.
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Reviewed in the United States on January 17, 2024
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Lisa B
Lexington, US
★★★★★ 5
My dogs favorite!
My dogs love these! They will play all day if you'd let them, these balls are their favorites. I use the chuck-it handle and they get tons of exercise in the big yard!
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Reviewed in the United States on April 22, 2026
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Theredirishman
Chelsea, US
★★★★★ 5
The Dog LOVES IT!
I bought this for my ex-wife's Pitbull. He is an aggressive chewer and usually destroys any toy I buy him. But not this one! The ball is small enough and pliable that it gives when he chomps on it. He loves this ball and seems to be his favorite toy. Thank you for making a product that he likes and can't destroy!
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Reviewed in the United States on December 30, 2024

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