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Alvium USB Cameras User Guide V3.6.4
Lenses: Focal length vs. field of view
Alvium 1800 U-811m/c
Values for 1800 U-811m/c cameras Type 2/3 (11 mm diagonal) sensors:
Alvium 1800 U-1236m/c
Values for 1800 U-1236m/c cameras with Type 1.1 (17.6 mm diagonal) sensors:
Focal length [mm]
Field of view (H × V in [mm])
Object distance = 500 mm
Object distance = 1000 mm
5
773 × 773
1553 × 1553
6
642 × 642
1293 × 1293
8
480 × 480
968 × 968
12
317 × 317
642 × 642
16
236 × 236
480 × 480
25
148 × 148
304 × 304
35
104 × 104
215 × 215
50
70 × 70
148 × 148
Table 90: Focal length versus field of view for Alvium 1800 U-811m/c
Focal length [mm]
Field of view (H × V in [mm])
Object distance = 500 mm
Object distance = 1000 mm
8
872 × 638
1759 × 1287
12
577 × 422
1168 × 854
16
429 × 314
872 × 638
25
270 × 197
553 × 405
35
188 × 138
391 × 286
50
128 × 93
270 × 197
75
80 × 59
175 × 128
Table 91: Focal length versus field of view for Alvium 1800 U-1236m/c
