Adjustable Iris Aperture Diaphragm M30 to M37 Iris Aperture Diaphragm Adapter Optical Diaphragm 1.5-26mm Lens Module Adapter Ring Optics PVS14

SKU: KF31.101

Q
What is an adjustable diaphragm?
Answer Question
A
It's an adapter for different caliber lenses and filters, and an accessory for adjusting the amount of incoming light.