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- #16
Not sure whether it was a genuine question, but it did make me laughBy "manual," do you mean that I have to attempt to press the flash button and camera button at the exact same time?
That's impossible, not even a ninja-photographer such as the child of Helmut Newton and Beatrix Kiddo from Kill Bill would be able to do that!
Actually --- you can do that pretty easily.
However it will only work if the scene itself is fully lit by the flash light and the ambient light is not contributing to the final photo (this can mean that you're taking the shot in a totally dark environment/room - but it can also just mean that you've a very small aperture and a low ISO in very dim lighting, and thus the ambient isn't strong enough to contribute to the shot).
You'd do it by taking the photo with a slow shutter speed (say a second or two) or even in bulb mode (where you hold down the shutter button to keep the shutter open). Then you'd have more than enough time to also trigger the flash right after. Further since the flash is the only light that will be contributing to the exposure you'd get the exact same shot as if the flash were triggered at the same time as the shutter. This kind of setup where a flash is triggered separately from the camera has been used a lot for ultra fast action shots and trip assemblies (eg water drops).