• Front side - 52mm inner diameter with M50x0.75 thread at the bottom
• Rear side - M77x0.85 male thread

This adapter allows using Kowa Prominar Anamorphic 16-H attachment in front of lenses with M77x0.75 filter thread.

Features of this adapter are:

• Bottom thread to catch and hold Kowa's back securely during adjustments;
• Flat tension spring to protect Kowa's body from damage by adapter screws.

Recommended installation procedure:

1. Loose secure screws on the adapter.

2. Mount the adapter on to your taking lens securely (tight it a bit).

3. Insert Kowa attachment and screw it till stop (do not tight it).

4. Turn the Kowa attachment to achieve a squeezed image without skew.

5. Secure the Kowa with three screws of the adapter.

Sample setup shows how the whole assembly may look. Two marked position are our adapters - filter adapter (available separately if necessary) and attachment to lens adapter (clamp) that is for sale on this page.