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Alvium USB Cameras User Guide V3.6.4
Lenses: Focal length vs. field of view
Alvium 1800 U-040m/c
Values for 1800 U-040m/c cameras with Type 1/2.9 (6.3 mm diagonal) sensors:
Alvium 1800 U-050m/c
Values for 1800 U-050m/c cameras with Type 1/3.6 (4.9 mm diagonal) sensors:
Focal length [mm]
Field of view (H × V [mm])
Object distance = 500 mm
Object distance = 1000 mm
2.8
892 × 667
1789 × 1337
3.6
693 × 518
1390 × 1039
4.8
518 × 387
1041 × 778
6
414 × 309
832 × 622
8
309 × 231
623 × 465
12
204 × 153
414 × 309
16
152 × 114
309 × 231
25
95 × 71
196 × 146
Table 78: Focal length versus field of view for Alvium 1800 U-040m/c
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 79: Focal length versus field of view for Alvium 1800 U-050m/c
