Great Fill flash Tips For Summer Portraits.
Flash is only needed indoors, right, or in low light? Not necessarily – it's also very useful in strong sunlight, where a quick burst of flash can help fill in shadows and reduce harsh contrast, particularly on faces.
This is called 'fill flash' and a good way to remember the name is to think of yourself 'filling in' shadows (the technique is also known as 'synchro sun').
Fill flash can also be useful on dull days, boosting the colours and increasing contrast and adding that nice 'sparkle,' or catchlight, to people's eyes. Here's a quick guide to getting started with fill flash.
1) Check the distance
This is an ideal distance for taking a portrait, but don't expect it to light up a football match taking place quite a long way away. To use fill flash, simply activate your camera's built in flash, and take the picture.
2) Taking more creative control
As you adjust the aperture, the camera will set the shutter speed, but be aware that the fastest shutter speed your camera is usually able to access with flash is 1/250 sec, depending on the camera.
Watch the histogram (exposure graph) carefully as very wide apertures used with flash in bright sunlight can cause gross overexposure – too much light is hitting the sensor.
3) Tricks for better exposure
If overexposure is a problem, choose a narrower aperture (higher f number) or reduce the ISO. You can also reduce exposure compensation the camera (the +/- button) to make the sky look a bit darker, for example.
Be careful that you don't make the subject darker too, though – so also use the flash compensation button on the camera (usually indicated by a flash icon) to ensure the subject is properly lit. Effective fill flash is all about getting a balanced exposure.
4) Fill flash power tips
Setting the flash to 'slow' can also be useful in lower light. If you use a speedlight, the same principles apply, but you have obviously have much more control over the flash output and angle of the light.
Remember to check the distance, and combine the exposure compensation controls with the flash exposure controls to ensure there is the right balance for your particular creative purpose.
Also, don't forget that while a pop of flash may help with lighting on portraits, you also need to carefully set the autofocus point over the eyes to be sure of consistently sharp results.
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