Up for sale is a beautifully preserved, vintage Kopil CdS TTL Meter (also known as the Lens-Lite Meter). Manufactured in Japan during the 1960s by Kobayashi Seiki Seisakusho, this unique analog tool was designed for direct, through-the-lens ambient light measurement. It serves as an excellent collector's piece or a functional accessory for analog photographers seeking period-accurate, high-quality gear.
Specifications
| Feature | Detail |
| Brand | Kopil (Kobayashi Seiki Seisakusho) |
| Type | CdS TTL Exposure Meter |
| Mount | Threaded screw mount (Engraved "CS") |
| ASA/ISO Range | 6 to 1600 |
| Shutter Speeds | 60 seconds to 1/1000th of a second |
| Aperture Range | f/1 to f/22 |
| Origin | Made in Japan |
Key Features & Visual Condition
Calculator Dial: Features a clean, highly visible striped calculator dial with a zero-calibration screw (0) for precise needle alignment.
Cosmetic Condition: The meter is in exceptional vintage condition. The glossy black cylindrical body shows minimal surface wear, and the silver-toned rims remain bright.
Controls: The dedicated red sliding OFF / ON switch is fully intact, brightly colored, and moves cleanly.
Authentication: Retains the original gold "JCII PASSED" inspection sticker, ensuring vintage Japanese manufacturing quality.
Accessories: Includes the original olive-green protective screw-on cover.
Operating Notes for Modern Use
Power Source: This device originally relied on a 1.35V mercury battery (such as a PX625 or PX635), which is no longer in production.
Modern Adaptation: To operate this meter accurately today, you will need a zinc-air Wein cell or a standard 1.5V battery paired with a voltage-reducing adapter to prevent over-exposure readings from higher-voltage modern cells.