ETC S4ZOOM-25-50A-RST-AG Ellipsoidal Zoom Lens Edison S4ZOOM-25/50A-RST-AG 750W

( Brand: Etc ), ( Manufacturer Part Number: S4ZOOM-25/50A-RST-AG ), ( Type: Lighting )

Review ETC S4zoom-25/50a-rst-ag S4zoom-25/50a-rst 750w Ellipsoidal To 50 Degree Zoom Lens And Edison

The **S4Zoom-25/50A-RST-AG** is a high-performance, professional-grade **25-50mm ellipsoidal zoom lens** designed for advanced stage lighting applications, offering unparalleled versatility and precision in theatrical, concert, and live event productions. Engineered with **Edison s legendary craftsmanship**, this lens combines cutting-edge optical technology with robust mechanical reliability, making it an indispensable tool for lighting designers seeking seamless transitions between wide-angle and telephoto perspectives. The **750-watt equivalent** rating underscores its ability to handle intense light output while maintaining exceptional clarity and color fidelity, ensuring vibrant, distortion-free illumination across a wide range of focal lengths. With a **2.5x zoom ratio**, the lens effortlessly bridges the gap between a broad, immersive stage view (25mm) and a tightly focused, dramatic spotlight (50mm), allowing for dynamic lighting effects without the need for manual lens changes. Its **RST (Remote Switchable Technology)** feature enables seamless presets and automated adjustments via DMX control, streamlining complex lighting sequences with precision. The **A-Grade** designation signifies superior build quality, featuring a durable, anodized aluminum housing, precision-machined components, and a robust mounting system compatible with standard E27 or E39 fixtures. Whether illuminating a grand theatrical stage, a high-energy concert venue, or a meticulously staged film set, this lens delivers **exceptional optical performance**, minimizing chromatic aberration and maintaining consistent brightness throughout its zoom range. Ideal for professionals who demand both artistic flexibility and technical excellence, the **S4Zoom-25/50A-RST-AG** represents the pinnacle of modern ellipsoidal zoom technology, blending innovation with the timeless elegance of Edison s legacy.

### **Pros and Cons of the S4Zoom-25/50A-RST-AG (750W Ellipsoidal Zoom Lens)**

1. **Versatile Zoom Range** The 25-50mm zoom range provides flexibility for stage lighting, allowing adjustments from wide coverage to focused spots without changing fixtures.

2. **High Power Output (750W Equivalent)** Sufficient brightness for medium to large venues, though actual lumen output depends on beam angle and beam spread.

3. **Ellipsoidal Optics** Offers precise beam shaping, gobos, and lensing effects, making it suitable for detailed lighting designs (e.g., character lighting, architectural accents).

4. **RST (Remote Scene Selection) Functionality** Allows for preset scene changes via DMX, improving automation and show control.

5. **AG (Automatic Gel) Compatibility** Supports automatic gel changes, enhancing color-shifting capabilities without manual intervention.

6. **Durable and Professional Build** Designed for stage use, with robust construction for frequent operation.

7. **Compatibility with DMX Systems** Works seamlessly with most lighting consoles, enabling integration into larger stage setups.

8. **Adjustable Beam Spread** The zoom feature allows for dynamic lighting adjustments without moving the fixture physically.

1. **High Cost** Ellipsoidal zoom lenses are generally more expensive than standard moving lights or fresnels, making them a significant investment.

2. **Complex Operation** Requires familiarity with DMX programming and scene presets, which may be overwhelming for beginners.

3. **Power Consumption** The 750W equivalent rating means higher energy usage compared to LED or lower-wattage fixtures.

4. **Limited Color Output Without Gels** While it supports automatic gels, it may lack the full RGB/Wheel capabilities of modern moving lights.

5. **Maintenance Requirements** Ellipsoidal lenses and gobos need periodic cleaning to maintain optical clarity.

6. **Size and Weight** Bulkier than LED fixtures, which may limit placement options in tight spaces.

7. **Learning Curve for Optimal Use** Mastering the zoom, lensing, and gobos effectively takes practice, especially for those new to ellipsoidal lighting.

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### **Conclusion**

The **S4Zoom-25/50A-RST-AG** is a high-end ellipsoidal zoom lens ideal for professional stage lighting where precision, flexibility, and dynamic effects are prioritized. It excels in applications requiring detailed beam shaping, gobos, and automated scene changes, making it a strong choice for theaters, concerts, and large-scale productions. However, its cost, complexity, and maintenance demands make it less suitable for small-scale or budget-conscious setups. If you need advanced lighting control and are willing to invest in professional-grade equipment, this lens delivers exceptional performance. For simpler or more cost-effective solutions, alternatives like LED moving lights or fresnels may be more practical.

### **Recommendation**

- You require an ellipsoidal zoom lens for professional stage lighting.

- Your budget allows for a high-end fixture with advanced features (RST, AG, precise optics).

- You need flexibility in beam shaping, gobos, and automated scene changes.

- The venue size and lighting demands justify the investment.

- You need RGB/Wheel color mixing without gels.

- Budget constraints make this lens impractical.

- Your setup is small-scale or requires more energy-efficient options.

- You prefer simpler, easier-to-use fixtures with fewer moving parts.

For most professional theaters or large productions, this lens is a worthwhile investment due to its versatility and performance. However, weigh the pros and cons carefully against your specific needs before purchasing.

Details:

Etc patented one-handed zoom operation makes adjustments quick, simple and safe. Rugged die-cast and extruded aluminum construction. But the best part is that Source Four Zoom has all advantages of revolutionary fixed-focus Four: bright even field, cool beam, and amazing efficiency. Super-efficient HPL lamp.

Insulated rear handle. Faceted dishrag reflector removes 90% of IR heat from beam. Supports Dimmer Doubling. Note: NOTE: With Edison connector installed.

Easy access lens cleaning. ETC 42550-0A Source Four Features:: Rated up to 750W. Technicians can focus with one hand and hold the ladder other. Positive zoom lock.

Lamp NOT Included. Field angle and focus scale markings. Three-plane stainless-steel shutter blade assembly. Tool-free lamp adjustment.

With a zoom you only need one fixture to achieve variety of field angles, and with Source Four Zoom its easy too. 25 50 Zoom range. And the lens tube door provides quick and easy access when you want to clean assembly tool-free. Rated up to 750W, Source Four Zoom gives you Fours crisp optics for excellent imaging and field quality.

The Source Four Zoom is UL and cull listed, CE compliant, TUV approved GS marked.

part #: s4zoom2550arst price

• $860.00

specifications singlelightiq:

• brand: Etc
• mpn: S4zoom-25/50a-rst-ag
• type: Lighting

payments singlelightiq:

• wallet: Apple-pay
• other
• credit card: Discover

shipping singlelightiq:

• class: Standard
• cost: $0.00
• type: Fixed
• service: Standard
• transit: 2-5 Days

seller singlelightiq:

• # reviews: 17965
• rating: 99.9%
• city: Verona, Wisconsin

offer singlelightiq:

• options: Ship-to-home
• availability: In Stock
• started: February 19, 2026
• sold: 0
• quantity: 4

general singlelightiq:

• Musical Instruments Gear > Stage Lighting Effects > Stage Lighting: Single Units
• condition: Used

returns singlelightiq:

• paid by: Buyer
• time: 30 Days
• method: Money back
• policy: Returns Accepted

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