The King Regula Picca CLK is a viewfinder camera. It was built in the 60s by King KG in Bad Liebenzell.
The lens of the King Regula Picca CLK cannot be exchanged. The name of the manufacturer for the lens is “Color-Isconar 40mm f/2.8”. The focal length is 40 mm and the largest aperture of the lens is f/2.8. There is no autofocus with the 35mm camera. You have to focus on the subject manually.
The 35 mm camera has a selenium exposure meter. It is designed for films from ISO 25 to ISO 400. The aperture and exposure time can be set, but the values can only be set together.
The King Regula Picca CLK has a bulb setting. In the bulb setting, it remains open as long as the photographer keeps the shutter button pressed. However, this function can only be used with a cable trigger.
An external flash can be connected via Hot Shoe. It has a thread for a tripod. Additionally there is a connection for a self-timer.
The 35 mm camera does not need batteries.
Films for the King Regula Picca CLK
The King Regula Picca CLK must be equipped with 35mm films. The 35mm format is very common, which is why there are still some manufacturers and many development laboratories. One option for b/w images is the Ilford FP4 Plus*. A possible film for color pictures is the Agfaphoto Vista 400*.
Technical datasheet
| Attribute | Specification |
|---|---|
| Type of Camera | Viewfinder camera |
| Film format | 35mm |
| Film transport | Manual |
| Picture format | 24 mm x 36 mm |
| Focal length | 40 mm |
| Widest aperture | f/2.8 |
| Focus | Manual |
| Exposure times | 1/500 second to 1/30 second, Bulb |
| Bulb mode | Yes |
| Light meter | Selenium light meter |
| Supported film speeds | ISO 25 to 400 |
| Exposure modes | Manual mode |
| Auto DX (Film sensitivity) | No |
| Built-in flash | No |
| Flash Connection | Hot Shoe |
| Tripod mount | Yes |
| Cable release thread | Yes |
| Self-timer | Yes |
| Power supply | Not necessary |
| Estimated value / Used price | 71,50 Euro Estimate based on used prices of 4 offers (possibly with different scope of delivery and/or condition). As of June 15, 2026 |
| Average used price in the year 2023 | 81,25 Euro (87.67 US-Dollar) |
| Average used price in the year 2024 | 76,98 Euro (82.26 US-Dollar) |
| Average used price in the year 2025 | 73,40 Euro (79.02 US-Dollar) |
FAQ about the King Regula Picca CLK
Is the King Regula Picca CLK a rangefinder camera or a viewfinder camera?
It's a viewfinder camera, meaning you look through the viewfinder to compose your shot. This differs from rangefinder cameras which use a separate rangefinder patch.
Does this camera have autofocus?
No, the King Regula Picca CLK is a manual focus camera. You have to manually adjust the focus ring to achieve a sharp image.
What kind of lens does the camera use, and can I change it?
It uses a fixed Color-Isconar 40mm f/2.8 lens. The lens cannot be changed; it's a built-in feature of the camera.
How does the light meter work in the camera?
It has a selenium light meter, which doesn't require batteries. It works by directly measuring the light intensity; it's designed for films with ISO sensitivities between 25 and 400.
Can I use a tripod and flash with the camera?
Yes, the King Regula Picca CLK has a tripod mount and a hot shoe for connecting an external flash. It is completely mechanical so no battery is needed for the flash to fire.