Conversion between mm and degrees in FLIR A6xxx camera lenses

FLIR A6750sc SLS

Focal length	Field of view (FOV)	f number	Spectral region
13 mm	40.5° × 32.9°	f/2.3	7.5–9.5 µm
25 mm	21.7° × 17.5°	f/2.3	7.5–9.5 µm
50 mm	10.9° × 8.8°	f/2.3	7.5–9.5 µm
100 mm	5.5° × 4.4°	f/2.3	7.5–9.5 µm
200 mm	2.75° × 2.2°	f/2.3	7.5–9.5 µm

FLIR A6700sc and A6750sc MWIR

Focal length	Field of view (FOV)	f number	Spectral region
13 mm	40.5° × 32.9°	f/2.3	3.0–5.0 µm
25 mm	21.7° × 17.5°	f/2.3	3.0–5.0 µm
50 mm	10.9° × 8.8°	f/2.3	3.0–5.0 µm
100 mm	5.5° × 4.4°	f/2.3	3.0–5.0 µm
Close-up 15 µm	9.6° × 7.7°	f/4.0	3.0–5.0 µm
25 mm	21.7° × 17.5°	f/2.3	1.0–5.0 µm
50 mm	10.9° × 8.8°	f/2.3	1.0–5.0 µm
100 mm	5.5° × 4.4°	f/2.3	1.0–5.0 µm