16th August 2003, 04:11 PM
16th August 2003, 04:50 PM
Ha ha ha ha ha....... Sorry, I had a LOL......
But seriously, I would think that whoever was first started working with the figures find the useful significant figures to be at the mm level, so as to avoid using decimal points.
What's the view of others.
16th August 2003, 05:42 PM
i did a google search on the topic. Every kinda agreed that mm is the traditional unit of measurement for focal length. Nobody explained why. It probably goes way back to early 1900s when photography started, but i'm just guessing here.
Anyone got a good link on this?
16th August 2003, 06:34 PM
Early lenses were marked in cm (see the early nikkors). frisky's probably right here, avoids the use of decimel points.
16th August 2003, 06:44 PM
back then metric system not the norm though...
Originally Posted by ST1100
16th August 2003, 08:17 PM
Its probably because in the metric system you mostly work in powers of 1000. So: mm->m->km Its rather unnatural in scientific areas to work in cm.
17th August 2003, 12:17 AM