Help

Please take your time to make measurements, this step is the most important for a perfect focus ring fit. We have a lot of lenses in our database but we don’t have every lenses. If yours is in our database, we will double check the measure. If you don’t feel confortable measuring the lenses please send us the lenses we will make the measurements and installation.

How to measure your lens?

Use a Callipster:

Measure the diameter of the focus ring and its width.
Measure several times to be as accurate as possible.