5D MkII and others, do you KNOW your sync speed?

[scott_ferris]

<p>This is an interesting read, and test, for people who like high sync speeds, and who doesn't in daylight? Didn't realise different examples of the same body could show so much variation though.</p>

<p>http://strobist.blogspot.com/2010/01/know-your-sync.html</p>

<p>Take care, Scott.</p>

[steven_f1]

<p>Interesting reading. Note that there are 3 aspects to this:</p>

<ol>

<li>Variations in the shutter. Some cameras will have a shutter that is a little faster or slower than 1/200 sec.</li>

<li>The timing between the flash and the camera. If the flash responds a little slow to the trigger signal from the camera you might have to reduce the sync speed. </li>

<li>The duration of the flash. The flash pulse is not instantanious. If a studio flash puts out a full power flash that lasts longer than 1/100 of a second a flash sync speed faster than 1/200 of a second is possible.</li>

</ol>

<p>I just tried this with my 5D MkI and 430EX flash and discovered that my camera will not allow me to set the shutter speed higher than 1/200 in manual mode. :( So all I can say about my camera is that my sync speed is 1/200.</p>

[scott_ferris]

<p>But Steven, did you get a full illumination at 100% power at 1/200? Also, can you fire your 430EX via a PC socket and one of <a href="http://strobist.blogspot.com/2009/05/universal-translator-ushers-in-new-age.html">these</a> at faster than 1/200 at less than 100% power (if you can do that) and get even illumination.</p>

<p>Glad you liked it, it is good info for those interested in daylight syncing etc.</p>

[steven_f1]

<p>Yes the flash was at full power and I did have full illumination. I don't have a PC socket for it. I am not a big flash user. Most of the time I use a tripod for Landscapes.</p>