The ABC of Photography – W

The ABC of Photography – W

 

Watermark

An element embedded in a digital image, such as a name or symbol, to show ownership and prevent images being used without the copyright owner’s permission. Weston, Edward (Edward Weston (1886-1958) was one of the major American fine-art photographers of the 20th century. His aim was, he said, to “make the commonplace unusual.” His photographs were clear and detailed representations of landscapes, portraits, nudes, and, most famously, still-life subjects such as seashells and peppers.

White balance

The digital camera system that sets the colour temperature for the scene being photographed. This can be set automatically, with the system attempting to set the colour so that it looks normal to the human eye. Most D-SLRs also offer a wide selection of manual white balance settings – where the WB can be set from a reference source (such as a piece of white card), or to a particular Kelvin value, or to a lighting type (such as sunny daylight or tungsten bulb lighting).

Wide-angle lens

A lens with a focal length shorter than the ‘normal’ lens (that is, the lens that gives the most true-to-life field of view) for a given format. In the 35mm format, focal lengths from 35mm to 24mm are considered wide-angle, while lenses from 21mm to 14mm are generally described as ultra-wide-angle.

Wratten number

A code for labeling optical filters, named after the inventor Frederick Wratten (1840-1926). Each separate colour has a number (orange filters, for example, have the number 81) and some have letters to indicate the strength of the filter (an 81EF is much stronger than an 81A, for example).

Sources:  Pixabay, NASA,Wikipedia, Susan Wingfield Lamar High School