The Time Machine
The Polaroid SX-70 does not provide full manual control over exposure. SLR670m comes with the 'Time Machine', which enables manual control over shutter speed. MiNT re-designed the camera motherboard to provide a port of communication for the Time Machine. Shutter speeds on Time Machine range from 1s to 1/2000s plus bulb, time and auto exposure. The Time Machine only works with the SLR670m produced by MiNT, the standard Polaroid SX-70 will not respond to the Time Machine. ISO 160 when Time Machine is removed, or under Auto mode.