M40.5x0.5 male to M33x0.5 female thread adapter, flangeless

• Front side - M33x0.5 female thread
• Rear side - M40.5x0.5 male thread
• Machined from high quality aluminium alloyWhy aluminium?

This adapter allows using attachment with M33x0.5 thread in front of lenses with M40.5x0.5 filter thread.

Flangeless design prevents increasing of the optical path and reduces risk of vignetting.