We have just launched our new Luma Surveillance Calculator tool which�can be found�under the 'Support' section of our website. This brand new tool allows�you to calculate Lens Field of View and Power Wire Length options for Luma Surveillance Cameras. You can can also use the tool to calculate DVR / NVR storage needs for all Luma Surveillance DVR and NVR products. Please visit the Support page to access the Luma Surveillance Calculator tool online.