SZ650/680/SZ810 Zoom Stereo Microscope
The SZ650/680/SZ810 series are Greenough stereo zoom microscopes with built-in digital imaging and variable video output distribution.

Product Overview
The SZ650/680/SZ810 series are Greenough stereo zoom microscopes with built-in digital imaging and variable video output distribution. They offer 0.65X to 5.3X zoom across three models, with a 110mm working distance and 12° stereo angle for depth perception during precision tasks. The system supports LED, halogen, or cold light source illumination (100V-240V wide voltage input), and allows users to set custom zoom ranges. Video output can be configured as 100% distribution or 50:50 split, with full light transmission through a rotating switch.
- ModelSZ650, SZ680, SZ810
- Zoom range0.7X-4.5X (SZ650), 0.68X-4.7X (SZ680), 0.65X-5.3X (SZ810)
- Zoom ratio1:6.5 (SZ650), 1:6.8 (SZ680), 1:8.1 (SZ810)
- Field diameterΦ22mm (SZ650), Φ23mm (SZ680), Φ24mm (SZ810)
- Working distance110mm
- Stereo angle12°
Key Benefits
- 110mm working distance allows room for tools like tweezers, probes, or soldering irons under the optics
- 12° stereo angle maintains depth perception across the full zoom range for accurate hand-eye coordination
- Rotating switch enables 100% light distribution to the eyepieces or 50:50 split to video output
- Built-in digital image model supports multiple video output connectors for integration with monitors or recorders
- Custom zoom range limitation allows operators to restrict the zoom span to match specific inspection tasks
- Interpupillary adjustment 50-75mm accommodates different user eye spacing for consistent viewing
- Wide voltage input (100V-240V) enables use in diverse international lab or workshop environments
Application Scenarios
- Jewellery and watchmaking assembly where hands work under the optics with a clear stereo view
- Precision inspection of small components in electronics or medical devices with a stable, tool-clear working distance
- Teaching or demonstration sessions using a monitor to show a live image to a group
- Quality control in a production line where the same instrument must serve both a human operator and a digital recording system
- Gemstone or mineral inspection requiring consistent lighting and depth perception across variable magnifications
Who It Is For
- Jewellery, watchmaking and precision assembly workshops
- Electronics manufacturers doing SMD and BGA rework and inspection
- Teaching laboratories in technical schools and universities
- Quality inspection teams needing both visual and digital documentation
- Research labs requiring stable stereo imaging for long-duration observations
Problems It Solves
- A fixed zoom range forces an operator to use multiple instruments for locating and inspecting a defect
- Lack of video output splitting means the operator must choose between viewing through the eyepieces or capturing the image
- Short working distance prevents the use of tools like soldering irons or probes under the microscope head
- Inconsistent illumination across models causes image quality variation when switching between setups
- No option to limit the zoom range leads to accidental over-zooming and loss of focus during routine tasks
Technical Features
- Greenough optical system with 12° stereo angle for depth perception at all magnifications
- Rotating switch for 100% light distribution to eyepieces or 50:50 split to video output
- Interpupillary adjustment 50-75mm for user-specific eye spacing
- Wide voltage input 100V-240V for global use without external converters
- Built-in digital image model with multiple video output connectors
- Custom zoom range limitation based on user-defined start and end points
- Support for optional illumination sources: LED, halogen lamp, cold light source
- Focusing arm and pillar stand options for flexible bench mounting
- Compatibility with multiple objective and eyepiece combinations for extended magnification
Specifications
| Model | SZ650, SZ680, SZ810 |
|---|---|
| Zoom range | 0.7X-4.5X (SZ650), 0.68X-4.7X (SZ680), 0.65X-5.3X (SZ810) |
| Zoom ratio | 1:6.5 (SZ650), 1:6.8 (SZ680), 1:8.1 (SZ810) |
| Field diameter | Φ22mm (SZ650), Φ23mm (SZ680), Φ24mm (SZ810) |
| Working distance | 110mm |
| Stereo angle | 12° |
| Viewing angle | 40° (SZ650), 35° (SZ680), 35° (SZ810) |
| Interpupillary adjustment | 50-75mm |
| Video output distribution | 100% (0:100 standard), 50:50 optional |
| Illumination | LED, halogen lamp, cold light source (100V-240V wide voltage input) |
| Focusing arm stand focusing distance | 80mm |
| Pillar stand focusing distance | 115mm |
| Built-in objective | 1X |
| Additional objectives | 0.5X, 2X |
| Optional eyepieces | 10X (Φ22mm, Φ23mm, Φ24mm), 15X (Φ16mm), 20X (Φ12mm) |
| Optional working distance | 189mm (0.5X), 36mm (2X) |
| Optional magnification range | 3.5X-22.5X (0.5X objective), 14X-90X (2X objective) for SZ650; similar ranges for SZ680 and SZ810 with adjusted values |
| Optional field of view | 62.9-9.8mm (SZ650, 10X, Φ22mm), 72.73-9.41mm (SZ810, 10X, Φ24mm) |
| Video output | Multiple connectors available, configuration depends on model and setup |
Specifications are taken from the AMADA product data for this item. Confirm critical dimensions with us in writing before ordering.
Customization Options
- Choose between binocular or trinocular head configurations
- Select from multiple objective and eyepiece combinations to extend magnification and adjust field of view
- Set a custom zoom range to limit the span for repetitive tasks
- Choose between focusing arm stand and pillar stand for different bench layouts
- Select illumination source: LED, halogen lamp, or cold light source
- Configure video output as 100% to eyepieces or 50:50 split to video
- Order with or without built-in digital imaging model based on recording needs
Comparison With Other Options
| SZ650/680/SZ810 without video output | The same optical system and working distance are retained, but the model with built-in digital imaging allows live video output without a separate camera or adapter. |
|---|---|
| SZ650/680/SZ810 with fixed zoom range | The ability to limit the zoom range prevents accidental over-zooming and maintains focus during routine inspection tasks. |
| LCD digital microscope | An LCD digital microscope lacks a binocular view and stereo depth; the SZ650/680/SZ810 retains full stereo vision for hand work while adding digital output. |
Use Guide
- Adjust the interpupillary distance to 50-75mm before focusing to ensure both eyes see a single merged image
- Set the desired zoom range before starting inspection to avoid accidental over-zooming
- Use the rotating switch to select 100% light distribution to the eyepieces or 50:50 split to video output based on whether the operator or the camera needs full brightness
- Connect the illumination source to the 100V-240V input to match the local power supply
- For extended working distance, use the 0.5X objective; for higher magnification, use the 2X objective with its 36mm working distance
- When using a monitor, ensure the video output connector matches the input on the display or recorder
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Frequently Asked Questions
What is the working distance under the standard 1X objective?
110mm. With the 0.5X objective, the working distance extends to 189mm; with the 2X objective, it reduces to 36mm.
Can I use this microscope for soldering and rework?
Yes. The 110mm standard working distance allows space for a soldering iron, hot air pencil, or probe under the optics.
Does the video output split the light?
Yes. The rotating switch allows 100% light to the eyepieces or 50:50 split between the eyepieces and video output.
Can I limit the zoom range to a specific span?
Yes. The system allows users to set a custom zoom range based on their inspection task.
Which illumination sources are supported?
LED, halogen lamp, and cold light source are supported, all with 100V-240V wide voltage input.
Can I order a trinocular head?
Yes. The SZ650/680/SZ810 series are available in both binocular and trinocular configurations; specify when requesting a quote.
Request A Price On The SZ650/680/SZ810 Zoom Stereo Microscope
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