Originally posted by comprock Does this mean that with the Metz 52 on the camera if I have a 1/250 or 1/500 shutter speed that the flash will fire when in PTTL-HSS mode?
If I understand your question correctly, then eyes. any flash with HSS available will fire at shutter speeds faster than 1/180. With my 52 AF-1, my default mode is PTTL HSS. When I want to use HSS, I simply select an aperture that will give me a faster shutter speed.
Be aware that HSS lowers the effective guide number on the flash, because to achieve a correct result the flash fires multiple short bursts.
Originally posted by comprock Also, what do you see as the pros and cons to using the Metz 58?
I haven't used it much. As for pros, I'd say the dual light, the GN, the build quality. As cons, the menu system is ok but not as straightforward as the 52 (better than Sigma; different, but no better or worse than the 540), the front light apparently has limited controls, and I don't think it can act as a wireless HSS master (only relevant if you use multiple PTTL flashes in wireless HSS).
Given the complexity of advanced flash functions, I really like what Metz did with the menu-driven 52, everything is clear and easy to access. I heard many good things about the new 64, a merge of the 52 and 58. More expensive however.