Yes, there are 16mm still film cameras with double exposure capability, although this feature is more commonly found in 35mm or medium format cameras. However, some 16mm cameras do offer this option or have a workaround for achieving double exposures.

Here are a few examples:

1. Bolex H16:
   • The Bolex H16 series, a well-known 16mm film camera, offers a manual double exposure feature. It allows the user to advance the film only partway, giving them control over overlapping images.
2. Canon 1014XLS (Super 8, but similar concept):
   • While this is a Super 8 camera, its double exposure capability is a good example of how cameras in the film world can do this. Similar features exist for 16mm models.
3. Arriflex 16SR:
   • While generally used for motion picture film, some 16mm cameras like the Arriflex 16SR can be used to manually achieve double exposure by stopping the film during shooting. Special techniques or accessories like optical printers can also achieve the effect.
4. Bell & Howell 16mm:
   • Some older Bell & Howell 16mm cameras are equipped with features or customizations that allow for double exposures.

For cameras like the Bolex, the process generally involves manually stopping the film advance at the correct point for each exposure, allowing two images to overlap on a single frame.

If you’re looking to achieve double exposures with 16mm, you may need to experiment a bit with manual settings or use specific techniques, but the cameras listed above are good starting points for exploring this possibility.