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VS-LDA50
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-LDA50 | ||||
|---|---|---|---|---|---|
| Focal Length | 50 mm | ||||
| Maximum Aperture Ratio | 1:2.5 | ||||
| Optical mag. range | x 0.1 ~ × 0.25 | ||||
| Optical mag. | x 0.10 | x 0.15 | x 0.20 | x 0.25 | |
| 2/3" | 71.0 × 84.0 | 47.3 × 56.0 | 35.5 × 42.0 | 28.4 × 33.6 | |
| FOV (VxH mm) | 1/2" | 48.0 × 64.0 | 32.0 × 42.7 | 24.0 × 32.0 | 19.2 × 25.6 |
| 1/3" | 36.0 × 48.0 | 24.0 × 32.0 | 18.0 × 24.0 | 14.4 × 19.2 | |
| WD | 512.4mm | 350.8 mm | 270.0 mm | 221.5 mm | |
| O/I (Object & Imager distance) | 574.9 mm | 415.7 mm | 337.4 mm | 291.3mm | |
| Working F/# *Value at Iris open | 2.7 | 2.8 | 2.9 | 3.1 | |
| TV distortion | 0.03 % | 0.02 % | 0.01% | 0 % | |
| 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.) | 76 g | ||||
| Dimension | Φ 30.5 (MAX) × | L = 45.0 (×0.10) | ~ 52.3 (×0.25) mm |
| Lens Model | VS-LDA50 | |||
|---|---|---|---|---|
| Extension Ring (mm) | WD Minimum(mm) | WD Maximum (mm) | Mag @ Min WD | Mag @ Max WD |
| 0.5 | 214.1 | 468.3 | 0.110x | 0.260x |
| 1.0 | 206.5 | 428.3 | 0.121x | 0.271x |
| 1.5 | 200.1 | 397.7 | 0.131x | 0.281x |
| 2.0 | 194.2 | 371.5 | 0.141x | 0.291x |
| 5.0 | 165.0 | 266.4 | 0.203x | 0.353x |
| 10.0 | 133.9 | 186.1 | 0.306x | 0.456x |
| 15.0 | 114.4 | 146.2 | 0.409x | 0.559x |
| 20.0 | 100.7 | 122.1 | 0.513x | 0.663x |
| 25.0 | 90.9 | 106.3 | 0.616x | 0.766x |
| 30.0 | 83.4 | 95.1 | 0.719x | 0.869x |
| 35.0 | 77.5 | 86.6 | 0.822x | 0.972x |
| 40.0 | 72.7 | 80.0 | 0.925x | 1.075x |
| 45.0 | 68.8 | 74.8 | 1.028x | 1.178x |
| 50.0 | 65.5 | 70.5 | 1.131x | 1.281x |
