245Alvium USB Cameras User Guide V4.6.1
Lenses: Focal length vs. field of view
Alvium 1800 U-158m/c
Values for 1800 U-158m/c cameras with Type 1/2.9 (6.3 mm diagonal) sensors:
Alvium 1800 U-192m/c
Values for 1800 U-192m/c cameras with Type 1/1.8 (9.0 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 120: Focal length versus field of view for Alvium 1800 U-158m/c
Focal length [mm]
Field of view (H × V in [mm])
Object distance = 500 mm Object distance = 1000 mm
4.8 743 × 557 1493 × 1120
6 593 × 445 1193 × 895
8 443 × 332 893 × 670
12 293 × 220 593 × 445
16 218 × 163 443 × 332
25 137 × 103 281 × 211
35 96 × 72 199 × 149
50 65 × 49 137 × 103
Table 121: Focal length versus field of view for Alvium 1800 U-192m/c
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