Steve Farley
Well-known member
If you already own a 420EX the 550EX is a good choice. Keep the 420 it makes a great wireless slave.
I wish I knew. I was equally suprised. Expected the same as 420
except for the ability to use FEC on the camera. ETTL should null
out any differences in the flash units. The only thing that I can
think of would be that there is a diffence in the slope of the
proportional flash output control and the camera's firmware is
calibrated for the 550. Seems a little strange though.
Again this was a fairly quick and unscientfic check. With each
configuration I just took some snapsots of people sitting on a
moderately dark couch. With the 420 I also did a bunch of "real"
shots.
420EX & flip up flash 90% of shots were at least 2 stops under 5%
were perhaps 1/1/2 stops over and 5% about right.
520EX All shots in the experiment seemed within 1 stop of correct.
Steve
There is something I don't understand I am afraid so please forgive
me for asking you some more questions. Why does the 550EX out of
the box (without FEC or FEL) a better job than the 420EX? Of course
it has a higher GN, but I would expect that if a shot with the
420EX is underexposed the same shot, this time with a 550EX, would
also be underexposed. The camera controls the flash and how would
it know if a 420EX or 550EX was attached to the flash shoe?
Without the 550 (ie 420 or internal) almost all point & shoot type
shots in any mode were badly underexposed (Virtually no content in
the upper half of the histogram). FEC helped, also using FEL which
is supposed to switch to centerwiegted also helped. (This has the
unfortunate side effect of sometimes dismissing the subject though)
None of these workarounds seem to be as good as the 550 though.
I have only had the 550 for 1 day so it hasn't been used too
heavily. Wireless is great though.
What happens when you use your 420EX again as the main flash? Are
the shots usable without FEC? Perhaps it wasn't necessary to buy
the 550EX. I ask these questions because I am still undecided
between the 420EX and the 550EX.
Steve
I recently purchased the 420ex flash but have been very
disappointed with the results. I'm not sure if its me or the flash
or the camera. Most of the photos are underexposed and very
inconsistent. So far the best results (which are few) have been on
manual. Does anyone else have this problem with this combination.
I really thought after buying this camera and then the better flash
a month later, that I would solve most of my photographic problems,
but now I'm not so sure.
Any advice or suggestions would be appreciated.
Thanks,
Mike