If you find the title of this article a touch intimidating, please stick around and watch the video. It is important to understand how The Inverse Square Law affects bounce flash photography, and creates a specific result where the background appears brighter when the flash is bounced properly without on-camera flash modifiers. I know that is counter-intuitive, but that is what happens when you bounce your bare flash behind you instead of using a light modifier on your flash. The accompanying video, linked to below, explains this Read more inside...
Using images from a past workshop, I want to explain a simple concept with flash photography on location. In workshops and seminars I quite often describe the flash as 'riding on top of' the available light exposure. It's just another way of describing the usual technique of under-exposing the ambient light somewhat, and then using flash to give correct exposure. We can thereby control the final look of the image by controlling the direction of light from our flash.
By using flash like this, we can use the flash to 'clean up' the light in the Read more inside...
bouncing flash inside large venues - adding TTL flash to ambient light
One of the ideas that has been mentioned here previously, is when using on-camera flash indoors, to approach it with a studio mind-set where possible. Instead of bouncing flash upwards towards the ceiling, or even simply behind you, the idea is to think "where would I have placed my softbox if this were a studio?"
Then it is simply a matter of pointing the on-camera flash in that direction, and flagging any spill light from the flashgun. I most often use a piece of black foam to flag my on-camera speedlight. Read more inside...