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Alvium USB Cameras User Guide V3.6.4
Lenses: Focal length vs. field of view
Alvium 1800 U-052m/c
Values for 1800 U-052m/c cameras with Type 1/1.7 (9.2 mm diagonal) sensors:
Alvium 1800 U-120m/c
Values for 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
5
671 × 560
1348 × 1125
6
558 × 466
1122 × 937
8
417 × 348
840 × 701
12
275 × 230
558 × 466
16
205 × 171
417 × 348
25
129 × 107
264 × 221
35
90 × 75
187 × 156
50
61 × 51
129 × 107
Table 80: Focal length versus field of view for Alvium 1800 U-052m/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 81: Focal length versus field of view for Alvium 1800 U-120m/c
