Hi there all,

this, positively, is a focus block for the larger Standard series, i.e., for WL, Universals and Photomics. The coarse and fine focus run independently, the fine focus doing so for around 2 mm and the coarse movement for something around 5 cm.

Regards !

JB

Hi,

may be this could be another posibility for you:

http://www.micro-life.de/anwendung.htm


The English explanation is in the middle of the page.

Regards.

JB

Hi Pär, I´m sorry, but you are not right. I´ve got the original Leitz booklet in front of me. In there are listed and explained all abbreviations the Leitz people have used during the "160 mm Era". And definitely, NPl means "normal plan", i.e., marks lenses, which have a flat-field correction for a ...

Hi everyone, nope´, NPL stands for "normal plan", i.e., for a flat-field correction for a field number around 20. Leitz used this expression, to distinguish these (easier to build an, hence, cheaper) flat-field lenses from there top-of-the-line series, the PL lenses; those had a flat-field correctio...