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VS-LDA25
LDA Series is design for producing low distortion image even when using with extension tubes 10 models from focal lengths f4mm～f75mm with reduced shading. Consistence Compact size: of 32mm in diameter (except for VS-LD 6.5). For VGA ～3 Megapixel sensors
| Model | VS-LDA25 | ||||
|---|---|---|---|---|---|
| Focal Length | 25mm | ||||
| Maximum Aperture Ratio | 1:2.0 | ||||
| Optical mag. range | x 0.05 ~ × 0.25 | ||||
| Optical mag. | x 0.05 | x 0.1 | x 0.20 | x 0.25 | |
| 2/3" | 142.0 × 168.0 | 71.0 × 84.0 | 35.5 × 42.0 | 28.4 × 33.6 | |
| FOV (VxH mm) | 1/2" | 96.0 × 128.0 | 48.0 × 64.0 | 24.0 × 32.0 | 19.2 × 25.6 |
| 1/3" | 72.0 × 96.0 | 36.0 × 48.0 | 18.0 × 24.0 | 14.4 × 19.2 | |
| WD | 508.2 mm | 253.2 mm | 125.7 mm | 100.2 mm | |
| O/I (Object & Imager distance) | 559.2 mm | 305.5 mm | 180.5 mm | 156.3 mm | |
| Working F/# *Value at Iris open | 2.1 | 2.2 | 2.4 | 2.6 | |
| TV distortion | 0.06 % | 0.02 % | -0.04 % | -0.06% | |
| Operation of Iris & Zoom | Manual (Lock crew M2) | Manual (Lock crew M2) | Manual (Lock crew M2) | Manual (Lock crew M2) | |
| Wavelength | Visible | Visible | Visible | Visible | |
| Camera mount | C-mount | ||||
| Flange Back | 17.526 mm | ||||
| Sensor size (max.) | 2/3" | ||||
| Filter Thread | M 27 P= 0.5 | ||||
| Weight (approx.) | 49 g | ||||
| Dimension | Φ 30.5 (MAX) × | L = 33.5 (×0.05) | ~ 38.6 (×0.25) mm |
| Lens Model | VS-LDA25 | |||
|---|---|---|---|---|
| Extension Ring (mm) | WD Minimum(mm) | WD Maximum (mm) | Mag @ Min WD | Mag @ Max WD |
| 0.5 | 92.7 | 362.5 | 0.070x | 0.270x |
| 1.0 | 86.5 | 284.7 | 0.089x | 0.289x |
| 1.5 | 80.7 | 232.1 | 0.109x | 0.309x |
| 2.0 | 76.0 | 197.4 | 0.128x | 0.328x |
| 5.0 | 55.4 | 101.9 | 0.246x | 0.446x |
| 10.0 | 37.9 | 55.9 | 0.442x | 0.642x |
