Lee Big Stopper (100x100mm) brand_ROR It features a trick hybrid

It features a trick hybrid electro-mechanical shutter with speeds from 1s to 1/4000s (plus Bulb) and aperture-priority autoexposure

so keep it in mind

Shutter speeds are good from 1/2s and up (1s is a touch slow) and the included Voigtlander Ultron 50mm f2 lens is free of haze or fungus

but this lens has got a bit of extra reach and about half the size and weight: not a bad tradeoff

Ample room for movements with 4x5" and can cover 5x7" when stopped down

Lee Big Stopper (100x100mm) brand_ROR It features a trick hybridThe Lee Big Stopper is a 10 stop ND filter designed to fit a 100x100mm Lee filter holder or compatible. Neutral, high quality glass and a foam pad to prevent light leaks a well designed filter for long exposures. Requires a compatible filter holder (not included). In excellent condition, with carrying tin.