The iRis DVR 5 from Advanced Inspection Technologies is a Borescope with Depth of Field(DOF) 3 to 50 mm, Viewing Angle 0 Degree, 90 Degree, Field of View(FOV) 28 Degree, 60 Degree, 90 Degree, 120 Degree, Operating Temperature -25 to 80 Degree C (Tip), -25 to 46 Degree C (System), Storage Temperature -25 to 60 Degree C. More details for iRis DVR 5 can be seen below.