manual flash photography

controlling bright sunlight with direct off-camera flash – (model: Molly K)

Working with Molly K as our model during an individual flash photography workshop in New York, we put in action the thought-process when using flash in very bright light. There’s a specific algorithm that gets us to optimal settings.

But, as usual, there’s more to a final image than just the numerical settings on the camera …

Learn more inside…

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manual flash vs. TTL flash

December 26, 2007

Manual flash vs TTL flash

For correct flash exposure, 4 things need to be controlled and balanced:
- aperture
- ISO
- distance (from the flash to subject)
- power (the flash’s actual blitz of light, taking into consideration any diffusion)

Two things relate to camera settings, and two things relate to the flash itself.
To really understand flash photography, it is essential to memorize those 4 things.

If you need an acronym to remember things more easily: PAID
Power, Aperture, ISO, Distance.

There are distinct ways in which flash exposure is controlled though - Manual flash or  TTL flash. (For the purposes of the explanation here, Auto and TTL flash can be grouped together wrt D-SLRs.)

With manual flash, you have to adjust any of those settings to balance them out for correct flash exposure. You can use a light-meter, or even use the histogram to get correct flash exposure. With TTL flash, the camera and flash control the flash output (i.e., the power) as you adjust any of the other settings. That’s it in a nutshell – the differences between Manual flash, and Auto / TTL flash.

But let’s look at this more closely …

Learn more inside…

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