Model  | Focal Length (mm)  | Iris (F/#)  | Working Distance (mm)  | Distortion (%)  | Relative Illumination (%)  | Filter Screw  | Format (inch)  | Mount  | 
X0820M11F24  | 8  | 2.4 - 16  | 100 - ∞  | <1  | >65  | M82*P0.75  | 1.1  | C  | 
X1220M11F24  | 12  | 2.4 - 16  | 100 - ∞  | <0.5  | >70  | M49*0.75  | 1.1  | C  | 
X1620M11F24  | 16  | 2.4 - 16  | 100 - ∞  | <0.3  | >65  | M40.5*P0.5  | 1.1  | C  | 
X2520M11F24  | 25  | 2.4 - 16  | 100 - ∞  | <0.2  | >70  | M35.5*P0.5  | 1.1  | C  | 
X3520M11F24  | 35  | 2.4 - 16  | 200 - ∞  | <0.1  | >70  | M35.5*P0.5  | 1.1  | C  | 
X5020M11F24  | 50  | 2.4 - 16  | 300 - ∞  | <0.1  | >70  | M40.5*P0.5  | 1.1  | C  |