The Pentaflex SL is a 35 mm camera. It belongs to the group of SLR cameras and was built in the GDR. The camera was built at the end of the 60s. In West Germany the camera was sold as “Porst Reflex FX3” for around 200 DM.
Pentaflex SL lenses are interchangeable. For this purpose, an M42 thread was used. There is a wide range of interchangeable lenses for the M42 lens mount. The Pentaflex SL does not have an autofocus and therefore requires manual focus.
The Pentaflex SL has no built-in exposure meter. The aperture and exposure time can be freely selected. Exposure times range from 1/500 second to 1/30 second.
The Pentaflex SL has a bulb mode. An external flash unit can be used via the PC flash socket.
Films for the Pentaflex SL
The Pentaflex SL needs photo film for taking pictures. Or more precisely 35mm film. 35mm films are still produced today and are quite easy to get. For black-and-white 35mm shots, the Ilford FP4 Plus* a good choice. For color images you can use the Kodak Gold 200*.
The Pentaflex SL can be connected to a cable release or tripod by means of the corresponding threads. The dimensions of the 35mm camera are 15 x 10 x 8 cm. The weight of the Pentaflex SL is 710 g. The camera is mechanical and requires no power to take pictures.
Today you can buy the Pentaflex SL only in used condition. The condition and, if available, accessories determine the price of a used copy.
Technical datasheet
| Attribute | Specification |
|---|---|
| Type of Camera | Single lens reflex camera |
| Film format | 35mm |
| Picture format | 24 mm x 36 mm |
| Lens mount | M42 lens mount |
| Focus | Manual |
| Exposure times | 1/500 second to 1/30 second, Bulb |
| Bulb mode | Yes |
| Built-in flash | No |
| Flash Connection | PC-Flash |
| Flash sync speed | 1/40 s |
| Tripod mount | Yes |
| Cable release thread | Yes |
| Self-timer | No |
| Power supply | Not necessary |
| Size | 15 x 10 x 8 cm |
| Dimensions in inches | 5.91 x 3.94 x 3.15 inches |
| Weight | 710 Grams |
| Country of production | GDR (German Democratic Republic) |
| Estimated value / Used price | 32,91 Euro Estimate based on used prices of 10 offers (possibly with different scope of delivery and/or condition). As of June 15, 2026 |
| Average used price in the year 2023 | 46,19 Euro (49.79 US-Dollar) |
| Average used price in the year 2024 | 60,56 Euro (64.94 US-Dollar) |
| Average used price in the year 2025 | 58,79 Euro (62.78 US-Dollar) |
FAQ about the Pentaflex SL
Is the Pentaflex SL a digital or film camera?
The Pentaflex SL is a film camera, specifically a 35mm camera. It uses roll film, not digital sensors. You'll need to develop the film after taking pictures.
How do I focus the camera?
This camera doesn't have autofocus. You need to manually focus the lens by turning the focusing ring until the image is sharp. It requires a bit more patience.
Does this camera have a built-in light meter?
No, the Pentaflex SL doesn't have a built-in light meter. You'll need to determine your exposure settings (aperture and shutter speed) yourself, perhaps using a separate light meter.
What kind of lenses can I use with the camera?
The Pentaflex SL uses M42 lenses. This is a popular mount, so many different lenses with varying focal lengths are available, both new and used.
Can I use a flash with this camera?
Yes, you can use an external flash. The camera has a PC flash sync socket for connecting a flash with a cable. Remember, it is not automatic.