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Alvium USB Cameras User Guide V3.6.4
Lenses: Focal length vs. field of view
Alvium 1800 U-2050m/c
Values for 1800 U-2050m/c cameras with Type 1 (15.86 mm diagonal) sensors:
Alvium 1800 U-2460m/c
Values for 1800 U-2460m/c
cameras with Type 1.2 (19.3 mm diagonal) sensors:
Focal length [mm]
Field of view (H × V in [mm])
Object distance = 500 mm
Object distance = 1000 mm
8
811 × 542
1636 × 1093
12
536 × 358
1086 × 726
16
399 × 267
811 × 542
25
251 × 167
514 × 344
35
175 × 117
364 × 243
50
119 × 79
251 × 167
75
75 × 50
163 × 109
85
64 × 43
142 × 95
100
53 × 35
119 × 79
Table 96: Focal length versus field of view for Alvium 1800 U-2050m/c
Focal length [mm]
Field of view (H × V in [mm])
Object distance = 500 mm
Object distance = 1000 mm
8
898 × 776
1810 × 1566
12
594 × 513
1202 × 1040
16
442 × 382
898 × 776
25
277 × 240
569 × 492
35
194 × 168
403 × 348
50
131 × 114
277 × 240
75
83 × 72
180 × 156
Table 97: Focal length versus field of view for Alvium 1800 U-2460m/c
