« on: December 05, 2013, 04:04:16 AM »
You only lose a little speed and weather-sealing (in the case of the 24mm F/1.4L).
"Only" use weather sealing? Well, it obviously depends on what you shoot, but for me it makes *the* difference between usable and no ends of repair bills like I experienced with my old non-L macro
I have to admit I find it hilarious if Canon will go on reserving sealing (which would consist of some rubber rings and such - please correct my if I'm wrong) for "L" lenses, for a €600-€800 lens this should be a given - at least to a standard that covers light rain, but maybe reserves wartime usage in the tropical rainforest for the premium models.
IMHO, this is one of those times it's justified to demand a high price for a feature, in face of it's [I assume] low manufacturing cost.
I look at it like this: assume the new non-L primes have weather sealing. On the one hand you have non-L primes with IS, USM, good IQ, and weather resistant sealing, and on the other hand you have L primes with no IS, are just a stop or two faster (which today's ISO performance isn't as important as it used to be 15 years ago), and the question of why would a photographer pay an extra for the red ring.
So I think it makes sense L lenses would have an extra stop, better IQ, and that "neither snow nor rain nor heat nor gloom of night stays these lenses from the reliable completion of their work" build, which includes weather sealing.