| Item | O-I3 | O-I3PH | ||
| Main Body | ● | ● | ||
| Eyepiece | WF10×/20mm | ●● | ●● | |
| WF16×/13mm | ○○ | ●● | ||
| 10X Article Eyepiece (0.1mm) | ○ | ● | ||
| Centering Eyepiece | ● | ● | ||
| LWD Plan Objective | LPL 2.5×/0.07 | W.D.=29.7mm | ○ | ○ |
| LPL 4×/0.10 | W.D.=17.5mm | ○ | ● | |
| LPL10×/0.25 | W.D.=7.9mm | ● | ○ | |
| LPL25×/0.40 | W.D.=5.0mm | ● | ● | |
| LPL40×/0.65 | W.D.=3.0mm | ● | ● | |
| LWD Plan Phase Contrast Objective | LPL Ph+ 10×/0.25 | W.D.=7.9mm | ○ | ● |
| LPL Ph+ 25×/0.40 | W.D.=5.0mm | ● | ● | |
| LPL Ph+ 40×/0.65 | W.D.=3.0mm | ○ | ● | |
| Annular Spot 10X | ○ | ● | ||
| Annular Spot 25X | ● | ● | ||
| Annular Spot 40X | ○ | ● | ||
| Slide Relief Phase Contrast Condenser N.A.0.35 W.D. =45mm | ● | |||
| Turnable Relief Phase Contrast Condenser N.A.0.35 W.D. =45mm | ● | |||
| Seidentopf Trinocular Head: Inclined 45° Both 100 (binocular tube) : 0 (photo tube) and 20 (binocular tube) : 80 (photo tube) | ● | ● | ||
| Mechanical stage available for 96 holes plate, moving range: 128(X)×80(Y)mm Large Stage: 206 (X) X 170 (Y) mm | ● | ● |