| parfocal | 1.36 | 0.2 | 6998 | 8 | 75 |
| parfocal definition | 0.04 | 0.7 | 6853 | 19 | 35 |
| parfocal microscope | 0.32 | 0.2 | 8438 | 19 | 2 |
| parfocal lens | 1.13 | 0.2 | 5606 | 13 | 5 |
| parfocal lens canon | 0.47 | 0.6 | 6967 | 19 | 68 |
| parfocal length | 0.09 | 0.6 | 4773 | 15 | 75 |
| parfocal distance | 0.1 | 0.2 | 6312 | 17 | 40 |
| parfocal zoom lens | 0.32 | 0.8 | 8430 | 18 | 4 |
| parfocal microscope definition | 0.43 | 0.6 | 5396 | 30 | 25 |
| parfocal tube lens microscope | 0.6 | 0.5 | 4399 | 29 | 83 |
| parfocal definition microscope | 0.1 | 1 | 1684 | 30 | 65 |
| parfocal definition biology | 1.98 | 0.4 | 8582 | 27 | 93 |
| parfocal definition microbiology | 1.19 | 0.8 | 8545 | 32 | 77 |
| parfocal definition biology microscope | 1.79 | 1 | 5742 | 38 | 27 |
| definition of parfocal lens | 2 | 1 | 1375 | 27 | 86 |
| definition of parfocal adjustment | 0.61 | 0.2 | 9776 | 33 | 51 |
| definition of parfocal objective | 1.88 | 0.8 | 8359 | 32 | 35 |
