Lenses: Focal length vs. field of view
163Alvium G1 User Guide V1.7.0
About S-Mount lenses
Alvium G1 S-Mount models have no filter. We recommend using S-Mount lenses
with an integrated IR-cut filter for a better image quality.
Read Mounting and focusing S-Mount lenses on page 187 to avoid damage when
using S-Mount lenses.
Focal length versus field of view
Alvium G1-030 VSWIR
Values for G1-030 VSWIR cameras with Type 1/4 (4.1 mm diagonal) sensors:
Focal length [mm]
Field of view (H × V [mm])
Object distance = 500 mm Object distance = 1000 mm
4 407 × 322 817 × 647
5 775 × 773 1557 × 1553
6 644 × 642 1296 × 1293
8 481 × 480 970 × 968
12 318 × 317 644 × 642
16 237 × 236 481 × 480
25 149 × 148 305 × 304
35 104 × 104 216 × 215
50 70 × 70 149 × 148
Table 77: Focal length versus field of view for Alvium G1-030 VSWIR
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