• sFront side - M58x0.75 female thread
• Rear side - M56x0.7 male thread
• Thickness - 4 mm
• Weight - 6 g

This adapter allows using standard screw-in 58mm filters on lenses with M56x0.7 filter thread.

Machined from high quality aluminium alloyWhy aluminium?.

Known compatible lenses:

• Angenieux Type 6x12.5 12.5-75mm zoom lens
• Angenieux Paris Retrofocus 3.5/28mm Type R11 lens

Setup photos and test images below are provided by David V. Kutaliya. The lens is P.Angenieux Paris Retrofocus 3.5/28mm.

For the experiment, he used a tripod and a Leica M10 camera. The distance to the mirror frame is 132 cm, ISO sensitivity is 100. The shots were made without the adapter, with the adapter and without filters, and then with the adapter and filter.

The purpose of this test is to check how much vignetting the adapter and filter adds for the wide angle Retrofocus 3.5/28mm lens. The photos size is reduced to load faster. If you need original photos, please let me know.

This wide angle lens vignettes with 58mm filter. If you don't like this, you will need a step-up ring to a larger size (at least 62mm). You need such larger step ring INSTEAD of this one, not additionally.

But David noticed something strange: "In addition, when recording video on Sony A9, there is barely noticeable vignetting in the corners precisely when the camera moves. The effect is strange, but it's true."

I don't know how to explain this either.