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The objective lenses in the table below are installed in non-adjacent positions in the standard 6-position nosepiece for objective lenses with M25 threads. Objective lenses are not installed in all positions to prevent damage to adjacent lenses as the objective lens is focused.
| Magnification | TypeNA | Numerical Aperture | Immersion | WD Working Distance (mm) |
|---|---|---|---|---|
| 20x | HC PL APO CS2 | 0.75 | Air | 0.62 |
| 40x | HC PL APO CS2 | 1.3 | Oil | 0.24 |
| 63x | HC PL APO CS2 | 1.4 | Oil | 0.14 |
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