REED Instruments RL-22 22MM LENS FOR R2100 For use with REED R2100 Thermal Imaging Camera. Distance to Spot Size at 100' (30.5m): 18.2 x 13.7' with a resolution of 1.37" (34.8mm). REED RL-22 Offers This REED RL-22 22mm, 10.4° Replacement Lens is an optional lens to the REED R2100 Thermal Imager. This lens will increase camera resolution at longer distances. No camera calibration required. Features For use with REED R2100 Thermal Imager Plug-n-play, calibration required