Pentax Screw-K Mount Adapter Brand_FUJIFILM and it can be used

and it can be used to activate long exposures (bulb)

EOS 5D Mark III

It also features a removable tripod mount for better balance when used on a tripod or monopod

The extremely shallow depth of field (DOF) at open aperture produces portraits and detailed studies of unequalled aesthetic effect

It includes a retro-styled electronic flash which fires a burst of white or coloured light at your subject

Pentax Screw-K Mount Adapter Brand_FUJIFILM and it can be usedThis Pentax Lens Mount Adapter allows screw mount lenses to fit on modern K bayonet mount cameras. When used with this adapter, a screw mount (Universal Thread) lens will focus to infinity (cannot be used for automatic diaphragm or open aperture metering). When used on any Pentax automatic camera aperture priority camera automation is retained when using screw mount lenses and accessories.