Color Effects
Sunlight is ideal to generate the best colors in photography. Miscellaneous shades of the color spectrum prevail in sunlight at different times of the day. At midday, blue color dominates the color spectrum, thereby rendering a cool effect to pictures. Contrarily, at sunset or sunrise, the red color of the spectrum produces pictures in warmer tones. Artificial light effects in photography depend upon the bulb used. Incandescent light gives yellow tinges to pictures, whereas fluorescent light sources produce a diffused light that leads to greenish-bluish tinges.
Weather Conditions
Sunlight cannot be a constant source of light in photography since it varies with the weather, location, latitude and season. Artificial lighting can be created at any time with the camera's in-built flash or secondary flash equipment. Digital lighting stands or an entire studio setup can also be used to create artificial lighting regardless of weather conditions outside.
Temperature Control
Artificial lighting allows temperature control, which determines the predominant color from the spectrum of white light. A hotter light source will produce pictures in red tones while obliterating the blue tone. Tungsten bulbs can produce high-temperature environments, and professional photographers often use these bulbs to achieve desired results. A varied temperature control for special effects is not possible with sunlight.
Portrait Photography
In specialized photography such as portrait photography, the type, quantity and quality of light plays a pivotal role. The direction and placement of the light source in portrait photography has a formidable impact on determining the contours, form and mood of the picture. Artificial light is particularly crucial for glamor and fashion photography since sunlight is inadequate to achieve the special effects required for portraits.