Digital Photographer

Composite your shots

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You can utilise Photoshop and combine all your desired elements into a single image

Having the ability to merge several photo components together in post opens up a vast number of possibilit­ies for dynamic compositio­n and exposure. In a genre where subjects are moving erraticall­y and at high speed, it can be nearly impossible to capture a precise compositio­n in a single frame. Capturing a well-positioned, correctly lit, inaction portrait of an athlete is not realistica­lly achievable as they run around a track, but taking the shoot into a studio, where you can pose the subject and sculpt the lighting, makes it possible. A very common technique is to shoot an appropriat­e background, edit this separately and overlay a posed, studio-shot, in-action sports portrait in Photoshop.

The key requiremen­t for compositin­g work is to ensure that lighting is uniform in each component and that the colour temperatur­e of the light on the subject matches the background. It is possible to control the colour of studio lighting by using gels, but in the compositin­g workflow it is often easier to change the white balance to match each element, as this offers the greatest level of control. Photoshop has several powerful tools that are essential for successful selections and extraction­s of elements. The Quick Selection Tool (W) is a go-to feature, due to its speed of operation and ‘smart’ characteri­stics – the tool remembers when selections are modified and uses this informatio­n to generate more accurate selections. Using the Refine Edge feature allows precise selection of detailed edges such as hair, with a higher Smart Radius setting on the Radius slider correspond­ing to a more complex and detailed selection. If shooting the subject in a studio, try using a rim light to highlight their outline against a neutral grey background – this makes it easier for Photoshop to ‘find’ the edges of objects when forming a selection. In the Output panel of the Refine Edge dialogue, check the Decontamin­ate Colors box to remove any colour spilling onto the extraction from the rest of the image.

 ?? © DAVID LEHL ?? AFTER
Final image
after some final global brightness and contrast adjustment­s, each element blends naturally in the final composite image
© DAVID LEHL AFTER Final image after some final global brightness and contrast adjustment­s, each element blends naturally in the final composite image
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Find a suitable background
Dave Lehl shot this Hong Kong street early one morning. Often it pays to shoot images with potential future composites in mind
above - top left
Pose the subject
Shooting your main subject in controlled...
above - bottom Find a suitable background Dave Lehl shot this Hong Kong street early one morning. Often it pays to shoot images with potential future composites in mind above - top left Pose the subject Shooting your main subject in controlled...
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BEFORE

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