I currently own a 7D, 24-70L, 50 1.4 and 135L, I really like mi 24-70L, its super sharp and love the IQ...
The 135L is the new member of the family , after used it I'm shocked with the IQ of the Prime L lens... my question is:
It is noticeable the IQ "jump" from a 24-70L zoom to a 24LII prime, keep my 50... and maybe an 85L???
Someone has been in this situation??
(Btw: You guys have a really nice community here have been around a long time without been a member)
I don't completely understand the question, but I'll try to address it anyway.
First, what subject matter do you shoot and what is it that has you thinking about primes ?
I made a move to an all prime set because I wanted faster lenses. I I had the 15-85mm and I found it quite good optically but I wanted faster lenses for shallow depth of field and low light. If you look at photozone's reviews (for example) you'll see that the 24-70 struggles at the wide end, so if you wanted a lens just to shoot at 24mm, the 24-70 might not be the best (or even the best zoom lens)
Basically, I'd suggest go ahead with all primes if you find that style of shooting agreeable, you want faster glass, and don't have much use for the functionality of a zoom lens.
Hang on to your zooms if you like to be able to rapidly switch between focal lengths and don't have much use for the extra stops.
BTW I ended up with the 35L, 50 f/1.4, Sigma 85mm f/1.4 and the 135L (with a full frame body). I've found this works really nicely, though the 24L would make more sense for someone shooting a lot of landscapes.