Permagrin wrote in post #7844198
Isn't the F2 supposed to be quite heavy?
I'd choose the 2.8 prime over the 2.8 zoom. We had both and kept the prime. I sold it with the 5D. That was a dark day for me in the way of gear
Though currently I'm the happiest I've been with my gear, since that day so that is good

I really wanted to put mine through field testing (for action) today but it's raining and it doesn't look like we'll be shooting the local re-enactment.
The f2 is heavy. Think 300/2.8 with a bit of weight trimmed from it. This is also the practical reason that stops me from carrying it as 2nd lens on location. My shoulder should be dead by the end of the 1st day if I have this lens. And of course, I'm not buying any lens that I am not willing to physically carry.
f/2.8 primes have never impressed me. For me, prime means f/2.0 or faster. Dunno.. just the way I feel it should be for my setup. Macro lenses and special-purpose lenses (TS-E, or related) excluded.
I'll hang onto the 135L. We get on well.
Belmondo wrote in post #7844204
Yoda..Permie...
I have the 2.8, and don't really have any issues with the weight. Instead, it has been the most difficult lens for getting consistent results (for me). I'm not sure what my issues are with it, but I'm satisfied it's not the lens.
Hmm... dunno either. Actually, weight is not THAT huge an issue, since I used to own the Sigma 70-200 and quite liked it. But it's just a preference for a lighter setup.
Permagrin wrote in post #7844220
I don't dislike the 2.8 Chief (not like I do the 100-400). I just don't like it as well as the other options in it's range. Just a personal preference. For me the F4IS was the golden child. It did everything I needed it too. The IS worked better than any lens I had, the bokeh was beautiful and I found F4 to work (even in weddings) plus it was lightweight. I'd say that 50% of my shots were with that lens.
Whereas now, I've got the 2.8, it weighs a ton and the VR works fine the bokeh is nice, it's sharp in the center so it works. But it's not the golden child.

That's the thing about the 724ISL. State of the art design plus state of the art IS. f/4 is not always the encumbrance that it is made out to be, not with today's high ISO capabilities.
I don't quite like the 40D's high ISO (3200 especially irks me), but Lightroom's NR is pretty darn good. On the 5D it is no problem at all.
I am fine with the slower zooms, on my existing rig. As we go forward, improvements in high ISO performance will yield even more gains - think 5DMk2 