Aperture Assembly M42 Projection Lens Change Adjustable Grating Night Vision

Small aperture assembly (adapter ring with aperture adjustment).

Professional leaf matting process. It is suitable for lens production and transformation of non-aperture lenses such as projection heads and slide lenses.

The front and rear ports are standard threads, which are easy to connect, strong and reliable, and the central axis is straight. The product has been continuously improved in practice and is practical and easy to use.

Standard sizes:
Small size, 50mm outer diameter; ultra-thin 10.5mm thickness, the rear lens can be closer to the aperture blade to prevent black circles and leave more space for lens modification.

(This indicator is very important, you can ask if you don’t understand).

The front and rear ports are all standard threads of the lens: M42 internal thread of the front port (this front port must be connected to a lens or adapter with an external m42 thread, otherwise the aperture ring will come out), the external thread of the rear port is M42, and the internal thread of the rear port is M39.

The aperture ring reserves the position of the aperture value mark. The maximum aperture of the aperture is 25mm; the ultra-circular aperture. The case is available in black and silver. The default is black.

Note: This product can be used in the rear and middle of the lens, and some film friends also add it in front of the lens.

Packing: 1pcs
Warranty period: 120 day