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Alvium USB Cameras User Guide V3.3.0
Lenses: Focal length vs. field of view
Alvium 1800 U-1240m/c
Values apply to 1800 U-1240m/c
cameras with Type 1/1.7 (9.33 mm diagonal)
sensors.
Alvium 1800 U-1620m/c
Values apply to 1800 U-1620m/c
cameras with Type 1.1 (16.8mm diagonal)
sensors.
Focal length [mm]
Field of view (H × V in [mm])
Object distance = 500 mm
Object distance = 1000 mm
4.8
763 × 578
1534 × 1161
6
609 × 461
1226 × 928
8
455 × 344
918 × 694
12
301 × 228
609 × 461
16
224 × 169
455 × 344
25
141 × 106
289 ×218
35
98 × 74
204 × 154
50
67 × 50
141 × 106
Table 79: Focal length versus field of view for Alvium 1800 U-1240m/c
Focal length [mm]
Field of view (H × V in [mm])
Object distance = 500 mm
Object distance = 1000 mm
5
1445 × 825
2905 × 1658
6
1202 × 686
2419 × 1380
8
898 × 512
1810 × 1033
12
594 × 339
1202 × 686
16
442 × 252
898 × 512
25
277 × 158
569 × 325
35
194 × 111
403 × 230
50
131 × 75
277 × 158
75
83 × 47
180 × 103
Table 80: Focal length versus field of view for Alvium 1800 U-1620m/c