The flow chart of Fig. 1 shows the process. 1. Refer to page 17 in the DMV3000 User Manual (Fig. 2). 2. Define a camera FOV range. 3. Select a camera and a lens. 4. Find an online lens calculator to calculate the optical resolution. If the resolution does not meet your requirements, go back to Step 3 and reselect a camera and lens. Fig. 1: Flow Chart Fig. 2: Page 17 in the DMV3000G User Manual