Digital SLR Camera

DSLRs often preferred by professional photographers, as they still allow an accurate preview frame near the time of exposure, and because DSLRs allows users to choose from a variety of interchangeable lenses. X0y0zs most also have a feature that allows accurate depth of field preview.

DSLR operational principle is as follows: for the purpose of viewing, the mirror reflects the light from the top of the lens placed at an angle of 90 degrees. After three times you will find through the roof pentaprism, repairing the eye of the photographer. During the exposure, the changes in a mirror set up, reducing the opening (if you stop down, or a smaller set than the width of the opening) and the shutter opens, allowing the lens to project light image sensor. One second after the shutter covers the sensor, stop the exposure and lower the mirror while the shutter. During which the mirror turns the so-called "blackout viewer." A mirror of fast action and the shutter would prefer not to delay action picture.

All this happens automatically at the time of milliseconds, with a digital camera designed to make it 10.3 times per second.

Many professionals prefer DSLRs also for a sensor larger than a compact digital thermometer. DSLRs has a sensor that is usually much closer in size to the traditional film format that professionals are now beginning to use. These sensors allow for greater depth of field and angle of the same image for the movie format, as well as the relatively high signal noise ratio.

The DSLR The term generally refers to a bedroom that resembles a 35 mm camera format, although some medium format cameras are technically DSLRs.

A camera that is based on the principle of single-lens reflex (SLR), using a mirror to show the images in the viewfinder to capture. Cross section (side view) of the optical components of SLR shows how the light passes through the lens (1), which is reflected in the mirrors mirror pentaprism (which should be at a right angle 45 degree) (2 ) and is expected to matte focusing screen (5). By condensing lens (6) and internal reflection in the roof pentaprism (7) the image is projected through the lens of the eye (8) for eye photographer. The focus is either automatic, activated by pressing the shutter button or a special AF, and especially in the case of a film SLR autofocus or manual, where the photographer to manually focus the lens by rotating the ring on the lens barrel lens. Once the image is a picture, the mirror up changes in the direction of the arrow, the focal plane shutter (3) open, and the image is projected and captured on the sensor (4), after the action closed the shutter the mirror back to the 45-degree angle, diaphragm reopening, and built-in drive mechanism re-tension the shutter for the next exhibition. Often there is a ring of soft material around the focusing screen, which helps reduce the impact of the slap of the mirror and help seal the mirror box of light entering the eye [1]. Some high-end digital camera features a shutter in order to further reduce the light that you can go there during long exposures.

Title Post: Digital SLR Camera
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