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Alvium USB Cameras User Guide V3.3.0
Lenses: Focal length vs. field of view
Alvium 1800 U-050m/c
Values apply to 1800 U-050m/c cameras with Type 1/3.6 (4.9 mm diagonal)
sensors.
Alvium 1800 U-120m/c
Values apply to 1800 U-120m/c cameras with Type 1/3 (6 mm diagonal) sensors.
Focal length [mm]
Field of view (H × V [mm])
Object distance = 500 mm
Object distance = 1000 mm
2.8
689 × 517
1381 × 1036
3.6
535 × 401
1073 × 805
4.8
400 × 300
804 × 603
6
319 × 239
643 × 482
8
239 × 179
481 × 361
12
158 × 118
319 × 239
16
117 × 88
239 × 179
25
74 × 55
151 × 113
Table 71: Focal length versus field of view for Alvium 1800 U-050m/c
Focal length [mm]
Field of view (H × V [mm])
Object distance = 500 mm
Object distance = 1000 mm
2.8
852 × 639
1709 × 1282
3.6
662 × 496
1329 × 996
4.8
495 × 371
995 × 746
6
395 × 296
795 × 596
8
295 × 221
595 × 446
12
195 × 146
395 × 296
16
145 × 109
295 × 221
25
91 × 68
187 × 140
Table 72: Focal length versus field of view for Alvium 1800 U-120m/c
