## Common ground
All options are types of viewfinders—devices used to view images, typically in cameras, telescopes, or electronic systems.
## Options at a glance
**8528.52 – Display-connected to computer**
- **Defining trait:** Designed to directly connect to and work with a computer.
- **Typical examples:** OLED viewfinder for laptop or desktop use.
- **Best fit when:** Used as a secondary display for a computer, not a camera.
**8528.59 – Display-connected to camera**
- **Defining trait:** Built for direct connection to a camera system.
- **Typical examples:** Electronic viewfinder for DSLR or mirrorless cameras.
- **Best fit when:** Integrated with a camera body, not standalone.
**8529.90 – Mounting on TV cameras/camcorders**
- **Defining trait:** Designed for professional video equipment like broadcast camcorders.
- **Typical examples:** Viewfinder used in studio or field video cameras.
- **Best fit when:** Used with large-format or professional video gear.
**8543.70 – For digital film cameras**
- **Defining trait:** Specifically made for viewing images from digital cinema cameras.
- **Typical examples:** High-resolution viewfinder for ARRI or RED cameras.
- **Best fit when:** Used in professional filmmaking, not general photography.
**9002.11 – Optical with lens**
- **Defining trait:** Uses optical elements (lens) to magnify the image without electronics.
- **Typical examples:** Viewfinder on a film SLR camera.
- **Best fit when:** No power or display; purely mechanical viewing.
**9002.90 – Optical without lens**
- **Defining trait:** Pure optical view, no magnifying lens (e.g., simple peephole).
- **Typical examples:** Viewfinder on a compact film camera or toy.
- **Best fit when:** Minimalist, low-cost, non-magnified viewing.
**9005.90 – Part of a telescope**
- **Defining trait:** Integrated into a telescope system for astronomical use.
- **Typical examples:** Eyepiece viewfinder on a refractor telescope.
- **Best fit when:** Used in astronomy or long-distance observation.
**9013.10 – For fitting to arms**
- **Defining trait:** Designed to be mounted on a user’s arm (e.g., for hands-free use).
- **Typical examples:** Arm-mounted viewfinder for industrial or military use.
- **Best fit when:** Used in wearable or mobile applications.
## Key differences
| Option | Type | Connection | Primary Use | Lens? |
|-------|------|------------|-------------|--------|
| 8528.52 | Electronic | Computer | PC display | No |
| 8528.59 | Electronic | Camera | Photography | No |
| 8529.90 | Electronic | Camcorder | Video | No |
| 8543.70 | Electronic | Digital film camera | Cinema | No |
| 9002.11 | Optical | — | Photography | Yes |
| 9002.90 | Optical | — | General viewing | No |
| 9005.90 | Optical | — | Astronomy | No |
| 9013.10 | Mechanical | — | Wearable | No |
## How to choose
- Does it connect directly to a computer? → 8528.52
- Is it for a camera (DSLR/mirrorless)? → 8528.59
- Is it used with a professional video camcorder? → 8529.90
- Is it for digital film cameras (e.g., ARRI)? → 8543.70
- Does it use optics and have a lens? → 9002.11
- Is it purely optical, no lens? → 9002.90
- Is it part of a telescope? → 9005.90
- Is it mounted on an arm? → 9013.10
## Overlaps & pitfalls
- **Optical vs electronic:** A viewfinder can be both optical and have a lens (e.g., 9002.11), but not electronic.
- **Camera use overlap:** 8528.59, 8529.90, and 8543.70 all relate to cameras—distinguish by device type (still vs video vs film).
- **No priority rule given:** Choose based on the product’s MAIN function—e.g., if it's for a film camera, use 8543.70 even if it has a display