AP Universal Developing Tank Spare Spiral (Classic) spo-disabled The filter is generally used

The filter is generally used to convert the light's approximately 5500K daylight colour to about 2900K tungsten balance to match other fixtures or ambient light conditions

Multi-coated to help eliminate internal ghosting and reflections

and the easy portability of the former without sacrifice

with only a one-stop loss in exposure

Important to note: Only to be used with Profoto flashes with LED modeling light

AP Universal Developing Tank Spare Spiral (Classic) spo-disabled The filter is generally usedThis AP Universal Developing Tank Spare Spiral is of the Classic design, and fits most developing tanks. It is a self fed spiral, so once the film is properly located, by simply twisting the spiral your film is fed correctly into the spiral. The spiral can be extended to fit a number of different film sizes.