On Sep 8, 2013, at 1:17 PM, Godfrey DiGiorgi wrote: > You don't have to know anything about "35mm equivalent field of view" or > "crop factors" to use Micro-FourThirds and FourThirds equipment ... They are > irrelevant to the system, which is not derivative of anything from 35mm film > cameras.
Strictly speaking G, you are correct. Practically speaking, not so sure. I grew up thinking in 35mm format. I learned the difference between a 28mm lens, 50mm lens, 135mm lens etc. using a 35mm film camera. I am not able to unlearn that. When I used a 645 camera, I always mentally calculated the reverse crop factor: "let's see, the 150mm is really like a 100mm lens on a 'normal' camera . . ." When I had my brief dalliance with m4/3 I had to translate "12=24, 30=60", etc. After 8 years of APS-C usage, I still translate 16-50 = 24-75. I imagine that there were large-format photographers migrating to 35mm who spent the rest of their lives mentally calculating the 35mm "crop factor" relative to the lenses they knew on their 4x5 or 8x10 systems. So for me, maybe for Marnie as well, I find it quite useful when talking about the m4/3 lenses to add a parenthetical comment about the relation of m4/3 focal length X to 35mm focal length Y. stan -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
