MDJAK wrote in post #18861175
I'm now considering the 45RM vs. the 60RM.
Any thoughts on that? Figured Wilt, among others, is here, so I'll get good info without clogging up bandwith by starting another thread.
Sorry Mark, I do not consider myself versed in Sony flash, apart from what is apparent in specifications. While the Chinese manufactured flash units have price appeal for the features they support, few of them offer post-warranty support beyond trashing it. Folks often state, "It is so inexpensive that when it fails I can simply buy a new one!" That is true, but plenty of working flash units of different brands with post-warranty support have been refurbished with new flash foot, etc. rather than needing to go into the trash can, too.
I just skimmed the owner manual for the 60RM, and I found one feature which (IMHO) renders it unaccepable for professional shooting, forcing you to have a second unit to use during the 'cool off' period...
"..., if the temperature
inside the flash unit rises further,
(overheat indicator) will light
on the LCD panel to indicate that
flash firing is disabled for a while.
In such a case, turn off the power
switch on the flash unit and leave
the flash unit unused for about 20
minutes to let it cool down."
A Canon flash, by comparison, may s-l-o-o-w-w itself down so that it can not overheat, but it does still continue to fire!
And the Sony 60RM seems a bit weak (or its 200mm zoom position is particularly effective!)...its 50mm ('normal lens') GN is 37m, which equates to GN 121ft...in contrast, the Canon 580EX and 600EX both have GN 138, putting the 60RM in between the Canon 430EX GN 111 and the 580EX/6000EX in light output.
The Sony 45 RM has a normal lens GN of only 98, which is one full EV less light than a Canon 580EX/600EX