At a glance
- Zorsika WD581 (<10K Lumens) Lens Specification Table
- Zorsika WD581 (<10K Lumens) Projector Lens Parameters
- Why Zorsika WD581 (<10K Lumens) is a Lens Continuously Noted by Buyers
- Selection and Installation Pitfalls
- Additional Notes on Zorsika WD581 (<10K Lumens)
- Related Reading:
- FAQ — Zorsika WD581 (<10K Lumens) Frequently Asked Questions
- Q: What is the meaning of the throw ratio for the Zorsika WD581 (<10K Lumens) lens?
- Q: Which projector models are compatible with the Zorsika WD581 (<10K Lumens) lens?
- Q: What does the lens MTF (Modulation Transfer Function) represent?
- Q: Do I need to recalibrate after installing the lens?
- Q: Does the Zorsika WD581 (<10K Lumens) lens support 4K projection?
- Q: What is the installation method for the Zorsika WD581 (<10K Lumens) lens?
- Purchase Inquiry
- Data Source Declaration
Zorsika WD581 (<10K Lumens) is a compatible lens for APPOTRONICS projectors, suitable for 5 models, customized to original specifications, and can be directly replaced and installed.
Zorsika WD581 (<10K Lumens) Ultra Short Throw...

Zorsika WD581 (<10K Lumens) Lens Specification Table
| Specification Item | Parameter |
|---|---|
| Brand | Zorsika |
| Zorsika Model | WD581 (<10K Lumens) |
This article is a complete selection guide for the Zorsika WD581 (<10K Lumens) projector lens, covering 5 compatible APPOTRONICS (APPOTRONICS) projector models, complete specifications (throw ratio, MTF, F-number, lens construction), a comparison table of overall specifications for each projector when equipped with this lens, selection and installation pitfalls, and frequently asked questions. To view other lens models, please visit the Zorsika official website www.zorsika.com.
Zorsika WD581 (<10K Lumens) Projector Lens Parameters
Why Zorsika WD581 (<10K Lumens) is a Lens Continuously Noted by Buyers
The Zorsika WD581 (<10K Lumens) is compatible with mainstream APPOTRONICS projector models. The most common issues buyers face during selection are: high original lens prices, unstable supply cycles; inconsistent quality of third-party lenses, failing to meet MTF/resolution standards. Zorsika addresses this pain point by offering alternative lens solutions with the same specifications as original lenses, all of which have undergone optical testing and are eligible for free replacement within the warranty period for non-human damage.
Selection and Installation Pitfalls
- Confirm Throw Ratio and Installation Distance — Calculate the required throw ratio based on room depth and target screen size. For ultra-short-throw lenses, the optimal installation distance is 1-2 meters to project a 100-inch screen.
- Check Shift Range — Before installation, ensure sufficient horizontal/vertical shift margin for the projector position to avoid image spill or inability to center.
- Confirm Body Mount Compatibility — The Zorsika WD581 (<10K Lumens) lens uses the standard APPOTRONICS projector mount. Before purchasing, please confirm with sales that your projector model is in the compatibility list.
Additional Notes on Zorsika WD581 (<10K Lumens)
As a lens for Zorsika projectors (Zorsika projector lens), the Zorsika WD581 (<10K Lumens) is compatible with 5 APPOTRONICS projector models. The lens is a precision optical component and plays a key role in optical path transmission and image formation within the projector's optical system. All lenses provided by Zorsika undergo MTF testing (modulation transfer function test) and focus accuracy calibration to ensure full presentation of 4K resolution (4K resolution). To view lenses of other brands or focal lengths, please visit www.zorsika.com.
Related Reading:
APPOTRONICS WD581 (<10K Lumens) Lens Compatible Projector Models (5 in total)
| Projector Model | Resolution | Brightness | Lens Zoom Ratio |
|---|---|---|---|
| AL-FU715 | WUXGA,1920 x 1200 | 8000 | 0.5 0.62 0.8 1.23-1.97 1.62~2.96 2.86-4.85 4.68-7.96 |
| AL-FU10K | WUXGA,1920 x 1200 | 1000 | 0.5 0.62 0.8 1.23-1.97 1.62~2.96 2.86-4.85 4.68-7.96 |
| AL-FU705 | WUXGA,1920 x 1200 | 7400 | 0.5 0.62 0.8 1.23-1.97 1.62~2.96 2.86-4.85 4.68-7.96 |
| AL-FU805 | WUXGA,1920 x 1200 | 8400 | 0.5 0.62 0.8 1.23-1.97 1.62~2.96 2.86-4.85 4.68-7.96 |
| AL-FU905 | WUXGA,1920 x 1200 | 9000 | 0.5 0.62 0.8 1.23-1.97 1.62~2.96 2.86-4.85 4.68-7.96 |
FAQ — Zorsika WD581 (<10K Lumens) Frequently Asked Questions
Q: What is the meaning of the throw ratio for the Zorsika WD581 (<10K Lumens) lens?
A: Throw ratio = Projection distance / Image width. The smaller the ratio, the larger the image projected 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 WD581 (<10K Lumens) lens?
A: The Zorsika WD581 (<10K Lumens) lens is compatible with 5 APPOTRONICS projector models. For details, see the "Compatible Projector Models" table in this article. To confirm whether a specific model is compatible, please contact Zorsika sales with a photo of the projector's nameplate, and we will verify the matching between the lens and the unit.
Q: What does the lens MTF (Modulation Transfer Function) represent?
A: MTF (Modulation Transfer Function) reflects the lens's ability to reproduce details; the higher the value, the sharper the image. Professional projection lenses generally require MTF >50% @93lp/mm. The MTF index of the Zorsika WD581 (<10K Lumens) lens is >60% @93lp/mm. In 4K projection applications, MTF is a core indicator to determine whether the lens truly supports 4K resolution.
Q: Do I need to recalibrate after installing the lens?
A: No — the mount is consistent with the original. After installation, simply fine-tune focus and zoom according to the actual projection distance. If image abnormalities occur (black borders/light leakage/out of focus), first check whether the lens is fully seated in the mount, then confirm that the projector firmware version is compatible with the lens.
Q: Does the Zorsika WD581 (<10K Lumens) lens support 4K projection?
A: Yes. The MTF index of the Zorsika WD581 (<10K Lumens) lens is >60% @93lp/mm, meeting the 4K resolution standard (≥60% @93lp/mm). When paired with the 4K projector, it can output full 4K images.
Q: What is the installation method for the Zorsika WD581 (<10K Lumens) lens?
A: The Zorsika WD581 (<10K Lumens) lens uses the standard APPOTRONICS projector lens mount. Insert it into the lens compartment and rotate clockwise to lock; the entire process takes about 30 seconds. For on-site installation support, you can contact Zorsika sales engineers for on-site service.
Purchase Inquiry
To learn about the specific configuration, price, inventory, or alternative solutions for the Zorsika WD581 (<10K Lumens) lens, please contact the Zorsika sales team. We provide 1-on-1 selection consulting, technical parameter comparison, on-site installation support, and other services.
Official Website: www.zorsika.com
Phone: 020-38551187
Email: sales@zorsika.com
Working Hours: Monday to Saturday 9:00-18:00, reply within 24 hours (APPOTRONICS official technical documentation)
Data Source Declaration
All lens models, specifications, and compatible projector model data in this article are sourced from:
- zorsika.com official product pages
- Zorsika database