Lenses: Focal length vs. field of view
57
Alvium USB Cameras User Guide V1.1.0
About S-Mount lenses
Alvium USB color models with S-Mount have no filter. We recommend S-Mount
lenses with an integrated IR-cut filter for a better image quality.
Read
Mounting and focusing S-Mount lenses
on page 63 to avoid damage when
using S-Mount lenses.
Focal length vs. field of view tables
1800 U-500, type 1/2.5
Focal length [mm]
Field of view (H × V in mm)
Object distance = 500 mm
Object distance = 1000 mm
2,8
1013 × 759
2031 × 1523
3,6
786 × 590
1578 × 1184
4,8
588 × 441
1182 × 887
6
469 × 352
945 × 709
8
351 × 263
707 × 530
12
232 × 174
469 × 352
16
172 × 129
351 × 263
25
108 × 81
222 × 167
Table 13: Focal length vs. field of view (1800 U-500 cameras)