Focal Length

25mm

50mm

4mm

F/#

1.0

1.2

1.2

Wavelength

8-12μm

8-12μm

8-12μm

Focus Range

0.3m-Infinity

40m-Infinity

0.3m-Infinity

Interface

Thread

Thread

Thread

Focus Mechanism

Manual

Fixed Athermalized

Fixed Athermalized

Dimensions

Ø41mm×41.34mm

Ø47.8mm×45.77mm

Ø34mm×29.2mm

Weight

88g

97g

≤52.6g

Operating Temperature

-40°C to +60°C

-40°C to +80°C

-40°C to +60°C

Storage Temperature

-40°C to +80°C

-50°C to +85°C

-45°C to +65°C

Front Element Sealing

IP67

IP67

IP67

External Coating

DLC/AR

AR

DLC