Saturday, January 21st, 2012 at
1:02 am
We also know that is not the same between definition and detail if we take an image at a short distance in a macro so that if we took a photo to a farther distance with a telephoto lens
Definition (sharpness) describes the amount of detail in a photograph, is one of the most important variables in capturing the texture of the object. The picture definition is given by different parameters, these can be modified in a post-process or may be taken into account when shooting.
The traditional measure definition of image (sharpness) is stated in line pairs per millimeter abbreviated as lp/mm. In other words the ability of the human eye to discerned the number of high-contrast pairs of lines appearing in the space of a single millimeter.
One of the main parameters to consider is the sharpness (acutance), this describes the jump and the transition from one form to the next. So a sharp transition results in sharper images.
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Tagged with: definition of images • high contrast • image sharpness • photography concept • resolution
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Concept
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Thursday, January 19th, 2012 at
2:44 am
The camera sensors in digital cameras replace film based on conventional cameras although their operation is quite different.
Camera sensors are mechanisms that are responsible for capturing the information of the light beam which is then processed and presented to generate the image.
Most current camera sensors are cell arrays with micron “encapsulate the light” and gather the information needed to generate the picture.
Each cell in the array can not distinguish the different colors of photons entering it, so that each cell has to filter the color to come back each cell monochromatic (one color-capable by default).
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Tagged with: digital camera • human eye • photography concept • sensors • three primary colors
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Concept
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Wednesday, January 18th, 2012 at
1:07 pm
The filters are usually very important in photography accessories, key elements in the shooting and the character of the images.
Within digital photography, many of them have become obsolete because they can easily emulated digital post-processing. Within this category fall, to name just a few examples, filters for black and white photography (filters red, yellow, green, etc..) And the filters creative offered by some manufacturers. However, there are many others who until today are just as essential as in analogue photography and can not be replicated digitally more effort made in Photoshop. Precisely for these filters is covered in this article.
UV Filter
Or rather an anti-UV, as it eliminates ultraviolet radiation while maintaining the other values. Ultraviolet light is invisible to the naked eye because they were outside the visible spectrum of light, but some of it is captured by the film causing loss of definition. They are widely used black and white film and color. Digital cameras usually have internal filters are effectively acting in the retention of UV rays. However, we always recommend having one of them placed permanently on the lens for protection against shock, accidental falls or unfavorable weather conditions.
Skylight Filter
Reduces excess blue color, especially in the shadows with a sky or on cloudy days. It also blocks ultraviolet radiation and is often used as a lens protector.
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Tagged with: cloudy days • correct exposure • photography accessories • photography equipment • photography filters • ultraviolet radiation • uv filter
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Photo Styles
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