Objectives guide
A 21-page brochure titled “Objectives from Carl Zeiss: Exceeding Your Expectations” is available from Carl Zeiss MicroImaging GmbH. Downloadable from the company Web site, this guide to selecting microscope objectives for research and routine work in the life sciences includes considerations such as magnification, free working distance and flatness of field, as well as a table of objective classes and applications. An overview of objective types includes the Achroplan class for image documentation in pathology and the Fluar types for making weak fluorescence signals visible. Background information on imaging properties, correction approaches and specimen handling is provided, along with specifications, images and diagrams.
http://www.zeiss.com/micro
/Buyers_Guide/Carl_Zeiss_Spectroscopy_GmbH/c16323