Robert8x10 said:
Just remember to use the Mirror-up for your RB. Theres nothing like the "Chur-Chunk" of the RB firing but it took me sometime to figure that mirror sure makes awhole lotta shaking and why my negs weren't sharp!
Robert, there's probably something messed up in the centrifuge friction. The RB has counter-rotating masses and almost no mirror shake. That said, locking the mirror is always a good thing in critical situations.
I currently have this setup: 50mm C, 127mm C, 180mm C, 360mm non-C.
I can't say but good things about the 50mm (except distortion), absolutely of great use. I bought it to replace the 65mm which was "never enough" (as opposed to someone else said) and in my very humble opinion not sharp as such.
Same thing for the 127mm, which replaced an older 90mm (I tend to prefer longer focal lenghts together with asymmetric design in the "normal" area. Though, the 90mm non-C was quite as good).
I strongly suggest the 180mm instead of the 250mm, because having had one and having it used for portraits it requires unconvenient full bellows extension in most cases for head shots, and even more than that sometimes (children etc.)
The 360mm is nothing special (probably because other factors are usually involved when taking photographs with such a long focal, like fog or shake) but it's a great thing to have such an amazing focal length available in mid format when you need it.
Manfrotto 028 "Triman" with 229 head for me.