Focal Length

50mm

54mm

50mm

F/#

2.0

1.0

1.0

Wavelength

7.5-9.5μm

8-12μm

8-12μm

Focus Mechanism

Manual

Manual

Fixed Athermalized

Dimensions (mm)

Ø50× 31.6

Ø57×68.6

Ø59×69.56

Weight

126g

<240g

<188g

Operating Temperature

-40°C to +60°C (Depends on Motor)

-40°C to +60°C

-40°C to +60°C

Storage Temperature

-45°C to +65°C

-50°C to +80°C

-50°C to +85°C

External Coating

AR

DLC/AR

DLC

Front Element Sealing

IP67

IP67

IP67

Focus Range

5m-Infinity

Format

Ø10

Ø19.7

Interface

Thread

Thread