Use these Siemen's star focus cards to focus your camera lens

These Camera Lens Focus Cards are perfect for any camera HW engineer, hobbyist, or photographer. These square-wave Siemens Star cards are not appropriate for objective image quality measurements but provide an efficient/easy/low-cost way to focus your camera.

Each set includes 10 cards that you can place around a room and at different distances.

Read our blog post about how to focus a camera to learn how to use the cards or download the file to print your own targets.