objective lenses

Which Objective Lens Should You Always Use First When Viewing A New Slide?

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Which Objective Lens Should You Always Use First When Viewing A New Slide? When focusing on a slide, ALWAYS start with either the 4X or 10X objective. Once you have the object in focus, then switch to the next higher power objective. Re-focus on the image and then switch to the next highest power. Which

Which Objective Lens Will Still Remain In Focus?

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Which Objective Lens Will Still Remain In Focus? Compound- a compound microscope will have two magnifying lenses used at a given time for observing the image. Parfocal- parfocal lenses or objectives are capable of staying in near perfect focus when the magnification is changed. Which term means that the microscope will remain in focus? Parfocal