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Alvium USB Cameras User Guide V3.6.4
Lenses: Focal length vs. field of view
Alvium 1800 U-1240m/c
Values for 1800 U-1240m/c
cameras with Type 1/1.7 (9.33 mm diagonal) sensors:
Alvium 1800 U-1242m/c
Values for 1800 U-1242m/c
cameras with Type 1/1.1 (14 mm diagonal) sensors:
Focal length [mm]
Field of view (H × V in [mm])
Object distance = 500 mm
Object distance = 1000 mm
4.8
763 × 578
1534 × 1161
6
609 × 461
1226 × 928
8
455 × 344
918 × 694
12
301 × 228
609 × 461
16
224 × 169
455 × 344
25
141 × 106
289 ×218
35
98 × 74
204 × 154
50
67 × 50
141 × 106
Table 92: Focal length versus field of view for Alvium 1800 U-1240m/c
Focal length [mm]
Field of view (H × V in [mm])
Object distance = 500 mm
Object distance = 1000 mm
6
931 × 679
1874 × 1365
8
696 × 507
1403 × 1022
12
460 × 335
931 × 679
16
342 × 249
696 × 507
25
215 × 157
441 × 321
35
150 × 109
312 × 227
50
102 × 74
215 × 157
75
64 × 47
139 × 102
Table 93: Focal length versus field of view for Alvium 1800 U-1242m/c
