Originally Posted by dysfunctnlretard
Yea I got that concept pretty well, including the fact that I should increase flash power when bouncing since light is spread out in the room rather than focused on a subject. I guess my real concern is manual mode. I don't like the idea of not knowing how my flash works and perhaps missing the opportunity to create some cool effects in manual mode. How fast can I shoot with my flash? I have high shutter speed sync on the flash but I thought max speed with any flash is 1/200-250sec?
If you want to use manual mode, your shutter speed controls ambient light and your aperture controls your overall exposure. If you want your background dark, set your shutter speed to your max sync speed (which I think is 200 on your body). With ETTLII your flash will usually expose your subject correctly. If you want your background lighter, just open the shutter longer. For anything slower than 1/60 and a moving subject, use second curtain sync to get the blurs correctly.
If you want your flash to be in manual, the shutter and aperture are as mentioned. Use but you should fire test shots at your subject and look at your histogram and adjust your flash output or aperture accordingly.
You can shoot as fast as your flash can recharge. On new AA's it's rate at 3 sec recharge at full power. After that it depends on how good your batteries are and what power you're shooting.
And max sync speed is determined by your body, not the flash. A flash duration is ~1/1000 sec. It has to do with the shutter curtains and how they work. Use High Speed Sync for anything above 1/200. Just know that your flash GN will drop as it's producing several smaller flashes as opposed to one single solid flash.
Practice practice practice!