Update : Sunday, January 15, 2012
The filter is an essential accessory for any good photographer.
Of course, many people say that we do not need this feature with the advent of digital and post-production work on the computer. Would I half agree with them. It true that since the advent of our work in computer images, the filter has become almost obsolete. Yet, the work of taking photos with filters and prevents prepares a photo to be put in the trash.
Even if you do not want to use a filter on your goals, I advise you to take at least a UV filter for each objective. It will protect the lens against the discomforts of life or others. Just a shock on the lens to end up with an unusable lens € 1,000, while the UV filter 20 or € 30 could protect him.
| Different Types of Filters | |
|---|---|
| Type | Function |
| Blue |
 Blue |
| Cyan |
Saturation of cool colors. Deleting warm. Use for landscape greens. |
| Gradient |
Ideal during cons-day attenus part of the picture and increases the other party. Moves a color on the half. |
| Yellow |
Absorbs Blue. Use on coated and sunrise. |
| Magenta |
Absorbs cool colors (blue, green, ...). Increase the presence of clouds. Decrease the intensity of the Reds. |
| Neutral |
Filter from dark to almost black. Ideal for long exposures. Reduction of the incoming light. |
| Orange |
Absorbs blue. Saturation warm colors (Red, Orange, ...). Remove the fog. Use on coated and sunrise. Use of Mountainous Landscape. Use of Landscapes Ocean. |
| Polarizer |
Elimination of reflections on surfaces other than metal (water, glass, ...). Rendered more attractive. Enhanced Contrast. Saturation cool colors (blue, green, ...). Linear Polarizer Filters Avoid, they tend to distort your reading exposure. Rather prefer Polarized Filters Flyers. |
| Portrait |
Reducing Orange and Yellow. Saturation of pink skin. |
| Red |
Absorption of light from the UV to the Orange. Enhanced Contrast. Return of the Red light. |
| Skylight |
absorbs much of the color green. Prevents colored reflections. Intensification of Tons. Reduced Dominance of Blue. |
| UV |
absorbs rays or radiation shortwave. Reduction of Ultra-Violet rays. Removing the haze. colorless glass. |
| Green |
Darkens the Reds. Corrects skin colors Black & White. Lightens the Greens. Use for landscape greenery. |
| Other |
Other filters exist. Filters I would call Gadgets (Twinkle, Blur, Fog, Starry, Warm, Infrared, ...). They are used in photos with special effects.
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Panoramic taken with an Olympus E-3 and an Olympus 14-54mm (ISO400 - f/8 - 1/640s)