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GLASS AND TRANSLUCENCY

When I studied still-life photography, my instructor dedicated a month to photographing glassware. We learned how to do white line and black line photos, which in essence are the difference between using white or black reflector cards to define the shape of the subject. In other words, photographs of glass and lighter-colored liquids are defined by the environment, which includes lighting and reflections used to portray and define them.

In most cases, selecting glassware usually starts with making a precise Pen tool path of the subject to define the outer contours of the object. The second step can include a variety of techniques, such as creating a luminance mask of the translucent areas, using the Image Calculations command to combine the hard-edged path with the translucent image information, or using layer blending modes and layer masks to create the illusion of transparency in the composite.


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