How to Use the Adapter to Adapter Calculator

1. Select the existing adapter you are using or planning to use from the "Existing Adapter" dropdown menu.
2. Select the lens you are using or planning to use from the "Lens" dropdown menu.
3. Click the "Calculate" button to calculate the adapter length needed for your setup.
4. The result will be displayed in the "Adapter Length" section below the button.

Please note that while we do our best to provide accurate flange focal distance (FFD) information for existing adapters and lenses, it is possible that the FFDs listed in this calculator may not be completely accurate. We recommend double-checking the FFD values with the manufacturer or other reliable sources to ensure the accuracy of your calculations.

If you need to calculate the adapter length for a different existing adapter and/or lens, simply repeat the steps above with the new selections.

What's New

Here are the latest additions to our database: