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Parfocal. This is the quality of the microscope that allows you to change objective lenses without greatly altering the focus. magnification. The ability to make an object larger. Why is parfocal useful? It is helpful for a microscope to be parfocal because the user does not have to adjust theRead More →

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Baader filter boxes can be attached laterally and above the other to create a sturdy unit. Each filter is then neatly in it’s own drawer and characterised from the front with name, number and size of filter. Are chroma filters Parfocal? Spoke with Chroma and all their filters are parfocal:Read More →