What type of camera were you thinking to add to the microscope ? Faveon based chip ? 30+ megapixel regular CMOS based chip ? If the answer to both is no, then go with the cheaper lense (achromatic). After all it is not about the beauty of the crystals, if they diffract or not does not depend on apo- or achromatic lenses.
Jürgen ...................... Jürgen Bosch Johns Hopkins Bloomberg School of Public Health Department of Biochemistry & Molecular Biology Johns Hopkins Malaria Research Institute 615 North Wolfe Street, W8708 Baltimore, MD 21205 Phone: +1-410-614-4742 Lab: +1-410-614-4894 Fax: +1-410-955-3655 http://web.mac.com/bosch_lab/ On Jul 30, 2011, at 5:46, Ramanathan Natesh <r.nat...@mail.cryst.bbk.ac.uk> wrote: > Dear All, > In crystal examination stereo zoom microscopes, how important is > it if one chooses a Achromatic objective lens compared to Apochromatic > lens. > Achromatic can give higher working distance ~ 70 mm or more as > compared to Apochromatic, which may be important for picking crystals / > manipulating before flash freezing. > Is it good to compromise on working distance to get Apochromatic > objective? > > An input from the community will be of great help to me. > > Many thanks in advance, > Natesh. > > --------------------------------------- > Ramanathan Natesh > Now at IISER-TVM (India). > > "Live Simply and do Serious Things .. " > - Dorothy Mary Crowfoot Hodgkin OM, FRS > > "In Science truth always wins" > - Max Ferdinand Perutz OM FRS > ---------------------------------------
