Focal Length

50mm

4mm

5.7mm

F/#

1.2

1.2

1.0

Wavelength

8-12μm

8-12μm

8-12μm

Format

Ø21.8

Ø8.2

Interface

Thread

Thread

Thread

Focus Mechanism

Fixed Athermalized

Fixed Athermalized

Fixed Athermalized

Dimensions

Ø49mm×55.6mm

Ø34mm×29.2mm

Ø31mm×34.5mm

Weight

<144g

≤52.6g

<55g

Operating Temperature

-40°C to +80°C

-40°C to +60°C

-40°C to +80°C

Storage Temperature

-50°C to +85°C

-45°C to +65°C

-45°C to +85°C

Front Element Sealing

IP67

IP67

IP67

External Coating

AR

DLC

AR

Focus Range

0.3m-Infinity