cpcnick wrote in post #17012052
if this thread is running still read on..... the yn 14ex is hmmmmmm good and BAD...the good if your shooting only to 1/250th sec speed buy it....if your shooting live subjects in the field DONT !...... many fly's etc move faster than a 1/250th sec shot !...... i know ive learn the hard way

....... im on a Canon 7D Canon 100 MM F 2.8 I.S. L series glass with 2x 31 MM and a 21 MM extension tube set up (all electrically connected) ....i get some good shots but only to 1/250th sec ...nor settings F 16 iso 200 1/250th sec .....
hope this helps..... the pic below needs a flash of over 1/250th sec as this shot is all you can get at a 1/250th .....this took 20 goes to obtain this poor image
I have to disagree with you and that for many reasons.
Even if the camera shoots with 1/250 your flash "bulb" is on for max 1/800 or so. (Canon 580ex on 1/128 output less than 1/40000 that just buy the way)
http://orionmystery.blogspot.com/2009/07/full-flash-macro-photography-3-things.html
so it doesn't matter how long or short the shutter is open if the flash is the sole provider for the light!
Second even without flash will you not get a sharp image with a 150 macro lens on anything larger than 2:1 with a shutter speed of above 1/350!
On a f 16 your refraction will already be visible and take away some of the quality of the lens.
The flash is worth every penny for what its made, close-up photography. Without defuser it will not be used, at least not on "wildlife" and in my opinion its not made for portrait.
So in short, if you want a cost-effective flash for close-ups and macro-work, get it and don't ask is it as good as the Canon or Nikon etc. If you wanted to spend that kind of money, you would not read this thread!
The amateur worries about gear, the professional about money, and the artist about light.
Always good light!