how to test a speedlight for issues?
Shot a wedding saturday night and had 2 580-ex2s with me and 2 bodies. One was way more powerful than the other so I tested them by swapping flashes, changing batteries, etc.
Yes, one was definitely under by about 2 stops (FEC +2 balanced things out).
OK...monday is here and I"m in teh studio and guess what? I can't get the flash to act up...I have 3 580s and all do the same thing - darkened the studio (not as dark as the hall was though) and using a flash meter as well as the histogram on the camera, direct and bounced (which is how I used them at the event) and all three read the same on both the meter and the histogram and look the same on the LCD.
So....other than maybe it being a heating up issue (of the flash - tried multiple batts, fresh, from the good flash, alkalines as well as 2 brands of nimh) I don't see an issue.
So how does one test a flash? If I can't replicate the issue sending in to canon won't do me any good as they'll find nothing wrong.
Vision without execution is hallucination. T. Edison.
My opinions are my own and not those of DPR or its administration. They carry no 'special' value
|Sit on rainbow by frapeace|
|Icelandic landscape by BoDrey|
from Best Landscape of the Week 1