• Front side - 52mm inner diameter
• Rear side - M49x0.75 male thread

This adapter allows using Kowa Prominar Anamorphic 16-H attachment in front of lenses with M49x0.75 filter thread.

Inner diameter of the adapter is 52mm, so it fits the attachment perfectly (we prefer perfect fit instead of 'universal' solutions with long screws).

Depth is 15mm.

Recommended installation procedure:

1. Mount the adapter into a lens filter thread till stop.

2. Insert Kowa attachment accurately into the adapter and slide it till stop.

3. Turn the attachment to achieve a squeezed image without skew.

4. 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 in this listing.