At a glance
- Zorsika WB373 Lens Specification Table
- Zorsika WB373 Projector Lens Parameters
- Why the Zorsika WB373 Lens Is a Continuous Focus for Buyers
- Key Points to Avoid Pitfalls in Selection and Installation
- Additional Notes on the Zorsika WB373
- Related Reading:
- FAQ — Zorsika WB373 Frequently Asked Questions
- Q: What does the throw ratio of the Zorsika WB373 lens mean?
- Q: Which projector models are compatible with the Zorsika WB373 lens?
- Q: What does the MTF (Modulation Transfer Function) of the lens represent?
- Q: Do I need to recalibrate after installing the lens?
- Q: Does the Zorsika WB373 lens support 4K projection?
- Q: What is the installation method for the Zorsika WB373 lens?
- Purchasing Inquiries
- Data Source Description
Zorsika WB373 is a compatible lens for Optoma projectors, applicable to 6 models, custom-made to original factory specifications, and can be directly replaced and installed.
Zorsika WB373 Ultra-Short Throw Projector Lens — 6 Compat...

Zorsika WB373 Lens Specification Table
| Specification | Parameter |
|---|---|
| Brand | Zorsika |
| Zorsika Model | WB373 |
| Throw Ratio | 0.60-0.62:1 |
| F Number / Focal Length | 2.2/11.1mm |
| Recommended Screen Size (inches) | 500 |
| MTF (Modulation Transfer Function) | for 66lp/mm |
| Lens Dimensions | φ94.2*169.34 |
| Resolution | 4K |
| Horizontal Shift | 11% |
| Vertical Shift | 6% |
This article is a complete selection guide for the Zorsika WB373 projector lens, covering 6 compatible Optoma models, full specifications (throw ratio, MTF, F-number, lens construction), a comparison table of overall projector specifications when using this lens, key points to avoid pitfalls in selection and installation, and a FAQ section. To view other lens models, please visit the Zorsika official website www.zorsika.com.
Zorsika WB373 Projector Lens Parameters
Why the Zorsika WB373 Lens Is a Continuous Focus for Buyers
The Zorsika WB373 is compatible with mainstream Optoma projector models. The most common challenges buyers face during selection are: high prices of original lenses, unstable supply cycles, and inconsistent quality of third-party lenses that fail to meet MTF/resolution standards. Zorsika addresses this pain point by offering a replacement lens solution with specifications equivalent to the original, all tested optically, with a free replacement warranty (excluding man-made damage) within the warranty period.
Key Points to Avoid Pitfalls in Selection and Installation
- Confirm Throw Ratio and Installation Distance — Calculate the required throw ratio based on the room depth and target screen size. The optimal installation distance for an ultra-short throw lens is 1-2 meters for a 100-inch screen.
- Check the Shift Range — Before installation, ensure there is sufficient horizontal/vertical shift margin for the projector position to avoid image spillover or inability to center the image.
- Verify Lens Mount Compatibility — The Zorsika WB373 lens uses the standard lens mount for Optoma projectors. Please confirm with sales that your projector model is on the compatibility list before purchasing.
Additional Notes on the Zorsika WB373
As a Zorsika projector lens, the Zorsika WB373 is suitable for 6 Optoma projector models. The lens is a precision optical component that plays a key role in light path transmission and image formation in the projector's optical system. All lenses provided by Zorsika undergo MTF testing (modulation transfer function test) and focus accuracy calibration to ensure the full presentation of 4K resolution (4K resolution). To view lenses of other brands or focal lengths, please visit www.zorsika.com.
Related Reading:
Optoma WB373 Lens Compatible Projector Models (6 Models Total)
| Projector Model | Resolution | Brightness | Lens Zoom Ratio |
|---|---|---|---|
| MSV9137 | 4K (3840 x 2160) | 13650 | BX-CTA28/0.34 ~ 0.37,BX-CTA10/0.5 ~ 0.65,BX-CTA11/0.78 ~ 0.9,BX-CTA12/0.9 ~ 1.3,BX-CTA07/1.3 ~ 1.8,BX-CTA08/1.25 ~ 2,BX-CTA20/1.44 ~ 1.8,BX-CTA21/1.8 ~ 2.4,BX-CTA22/2.4 ~ 4.8,BX-CTA23/4.8 ~8.6 |
| MSV9143 | 4K (3840 x 2160) | 13650 | BX-CTA28/0.34 ~ 0.37,BX-CTA10/0.5 ~ 0.65,BX-CTA11/0.78 ~ 0.9,BX-CTA12/0.9 ~ 1.3,BX-CTA07/1.3 ~ 1.8,BX-CTA08/1.25 ~ 2,BX-CTA20/1.44 ~ 1.8,BX-CTA21/1.8 ~ 2.4,BX-CTA22/2.4 ~ 4.8,BX-CTA23/4.8 ~8.6 |
| CKL1100T | 4K (3840 x 2160) | 11500 | BX-CTA28/0.34 ~ 0.37,BX-CTA10/0.5 ~ 0.65,BX-CTA11/0.78 ~ 0.9,BX-CTA12/0.9 ~ 1.3,BX-CTA07/1.3 ~ 1.8,BX-CTA08/1.25 ~ 2,BX-CTA20/1.44 ~ 1.8,BX-CTA21/1.8 ~ 2.4,BX-CTA22/2.4 ~ 4.8,BX-CTA23/4.8 ~8.6 |
| CKL1300T | 4K (3840 x 2160) | 13500 | BX-CTA28/0.34 ~ 0.37,BX-CTA10/0.5 ~ 0.65,BX-CTA11/0.78 ~ 0.9,BX-CTA12/0.9 ~ 1.3,BX-CTA07/1.3 ~ 1.8,BX-CTA08/1.25 ~ 2,BX-CTA20/1.44 ~ 1.8,BX-CTA21/1.8 ~ 2.4,BX-CTA22/2.4 ~ 4.8,BX-CTA23/4.8 ~8.6 |
| ZK1120 | 4K (3840 x 2160) | 11500 | BX-CTA28/0.34 ~ 0.37,BX-CTA10/0.5 ~ 0.65,BX-CTA11/0.78 ~ 0.9,BX-CTA12/0.9 ~ 1.3,BX-CTA07/1.3 ~ 1.8,BX-CTA08/1.25 ~ 2,BX-CTA20/1.44 ~ 1.8,BX-CTA21/1.8 ~ 2.4,BX-CTA22/2.4 ~ 4.8,BX-CTA23/4.8 ~8.6 |
| ZK1320 | 4K (3840 x 2160) | 13500 | BX-CTA28/0.34 ~ 0.37,BX-CTA10/0.5 ~ 0.65,BX-CTA11/0.78 ~ 0.9,BX-CTA12/0.9 ~ 1.3,BX-CTA07/1.3 ~ 1.8,BX-CTA08/1.25 ~ 2,BX-CTA20/1.44 ~ 1.8,BX-CTA21/1.8 ~ 2.4,BX-CTA22/2.4 ~ 4.8,BX-CTA23/4.8 ~8.6 |
FAQ — Zorsika WB373 Frequently Asked Questions
Q: What does the throw ratio of the Zorsika WB373 lens mean?
A: Throw ratio = Projection distance / Screen width. The smaller the ratio, the larger the projected image at the same distance. It is recommended to calculate the achievable screen size based on the installation distance, or consult Zorsika sales for selection calculations.
Q: Which projector models are compatible with the Zorsika WB373 lens?
A: The Zorsika WB373 lens is compatible with 6 Optoma projector models. Please refer to the "Compatible Projector Models" table in this article. To confirm compatibility with a specific model, please contact Zorsika sales with a photo of the projector nameplate. We will verify if the lens and projector match.
Q: What does the MTF (Modulation Transfer Function) of the lens represent?
A: MTF (Modulation Transfer Function) reflects the lens's ability to reproduce fine details; a higher value results in a sharper image. Professional projection lenses generally require MTF > 50% @93lp/mm. The MTF specification of the Zorsika WB373 lens is > 60% @93lp/mm. In 4K projection applications, MTF is a core indicator for determining whether the lens truly supports 4K resolution.
Q: Do I need to recalibrate after installing the lens?
A: No — the mount is the same as the original. After installation, only fine adjustments to focus and zoom based on the actual projection distance are needed. If image issues appear (such as black edges, light leakage, or out-of-focus), first check whether the lens is fully seated in the mount, then confirm the projector firmware version is compatible with the lens.
Q: Does the Zorsika WB373 lens support 4K projection?
A: Yes. The Zorsika WB373 lens has an MTF specification > 60% @93lp/mm, meeting the 4K resolution standard (≥ 60% @93lp/mm). When paired with an 4K projector, it can output a complete 4K image.
Q: What is the installation method for the Zorsika WB373 lens?
A: The Zorsika WB373 lens uses the standard lens mount for Optoma projectors. Insert it into the lens compartment and rotate it clockwise to lock, taking approximately 30 seconds. For on-site installation support, you can contact Zorsika sales engineers for an on-site service.
Purchasing Inquiries
For information on the specific configuration, price, stock, or alternative solutions for the Zorsika WB373 lens, please contact the Zorsika sales team. We provide 1-on-1 selection consultation, technical parameter comparisons, and on-site installation support services.
Website: www.zorsika.com
Phone: 020-38551187
Email: sales@zorsika.com
Working Hours: Monday to Saturday 9:00-18:00, response within 24 hours (Optoma official technical documentation)
Data Source Description
All lens models, specifications, and compatible projector model data in this article are sourced from:
- zorsika.com official product pages
- Zorsika database