New Adapter IRIS DIAPHRAGM Aperture Blade with M42 x1mm for Camera Lens
Product Feature:
The reason to have both M42x1mm female/ male threads is that you can use easy-to-get universal M42X1mm adapters with this one for your application... Otherwise, with only the Iris Diaphragm itself, you need to find a way to attach it to your lens/adapters, etc... which often times is not easy or at least not elegant :-)
these are high quality item, usually used in camera or projection lenses, can also be used with some mount adapters for adjusting the aperture.
the dimension of the Iris:
Max. aperture diameter: appro 25mm
min. aperture diameter: appro 1mm
the dimension of the outer casing:
outside diameter: appro 54mm
thickness: appro 13mm (w/o the male M42 thread); appro 17mm (w/ the male M42x1mm thread)
Diaphragm blades amount: 14
Material for metal,reliable performance.Durable.
When you close or open the diaphrag, both screws (male and female) remain at the same position
Packing List
one pc adjustable Iris aperture 1-25mm with male / female thread M42x1mm for camera