its all relative. Yes 12mm on 4/3rds has a field of view of 24mm on a full frame camera. But for talking about how focal lengths between short versus long i find it helpful.Instigator said:Isn't that chart misleading since Olympus has a crop factor of 2? 12mm on Olympus is not the same as 12mm on APS-C.
Its the same thing on any other format, in the same spot 7mm is going to show you a lot wider image than 200mm.
My mistake i should have been more clear, zooms and telephoto zooms draw the ire of some people who think primes are the way to go and using zooms and telephoto zooms is lazy.futureman said:I'm not talking about telephotos, I'm talking about prime vs. zoom. There are prime telephoto lenses (I'm sure you know that, but I'm just trying to clarify). I just think it's a good way to learn, one less variable to be wondering about.