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Shutter speed, aperture, lens aperture, SLR

What is shutter speed?

Exposure - this time from opening to closing the valve flaps, for which light has time to penetrate the body of the lens and get the photosensitive element Cameras (film/matrix), thereby forming an image. Exposure - a tool of the photographer, which he uses to make images of different artistic effects. For example, using different shutter speed, you can "freeze" the image, or vice versa - to blur.

What is Aperture?

Aperture (diaphragma), which is also called midriff, is the muscle wall between the chest cavity and abdominal cavity.
- Joke.))) So, the diaphragm - a device camera lens, allows you to adjust the aperture ratio, the there, change the number of light passing through the lens. As well as shutter speed, aperture - it is a tool of the photographer, which he uses to make images of different artistic effects. For example, at portrait photography, to fight off the background of the object, use large aperture opening. This technique in the composition highlights the main subject and focuses attention on it. The larger the lens aperture, the more opportunities for the photographer to implement the task.

What is the lens aperture?

The lens aperture - a relative aperture, which allows you to skip a certain amount of light through the lens. The larger the aperture ratio, the more the lens aperture; the larger the lens aperture, the more opportunities for the photographer to implement the task.

Can I use the built-in flash as a master?

Yes, you can use the built-in flash as a master. In the absence of the transmitter can be put on the built-in flash diffuser, set manually the appropriate flash and set fire so external studio flashes. The article using the built-in flash as a leading, I detailed how this can be implemented.

What is chromatic aberration?

Chromatic aberration - this optical image defects that lead to a decrease in image sharpness. Also contribute to the emergence of chromatic aberration in the image color contours, spots, stripes, which have the object absent. Chromatic aberrations arise from the fact that the optical system are made of optical glass with a refractive index depending on the wavelength. Waves of different lengths are refracted at different angles, which causes the appearance of colored stripes on the borders of objects. Chromatic aberration inherent in low-optical systems. The expensive optical systems with extra-low dispersion glass, they are virtually absent. For example, in the lenses Nikkor used a specially designed glass with ultra low refractive index, which allows you to effectively eliminates chromatic aberration, denoted by latin letters ED (extra low dispersion) - Extra-low Dispersion.

What is "Peresharp"?

Peresharp - a photographic jargon that name-calling photographers image with excessively high levels of field, that is, the presence of too high contrast between black and white in the image details. Such a phenomenon as peresharp today is not uncommon. This is due to the fact that amatours trying to save the damaged frames promazanym autofocus starts immensely add sharpness in Photoshop, thereby dooming the wounded man shot to his death. Too sharp a picture hurts your eyes to look at this photo it is difficult and even more so considering. Sometimes small natural blur in the photo looks better than artificial fotoshopnye sharpness. But still, it is better to avoid both of them.

Why turn the camera off before changing the lens, flash, memory card?

To your photographic equipment Bucket ahead of time, you need to know how to protect your treasure from premature death. Each time before changing the lens, flash, memory card and so on. E., It is necessary to turn off the camera and equipment to connect to it, such as flash. If you once forget in a hurry to turn off the camera before changing equipment - not terrible, can blow over... But if you practice this method forgetful all the time - wait for trouble and slowly raise money for a new victim.

How to clean the matrix digital SLR?

Clear matrix DSLR dust in two ways: dry and wet. If you have no experience in this business with cheap cameras, then wet cleaning does not suit you. But if you have money to burn - you can try... but still better pay and sleep specialist. Dry cleaning dust from the sensor is safer but less effective. If dust adheres to the matrix being in humid condition, then this does not blow away dust blower - only dry dust mop... can blow away a pear, but next to the mount should be cleaner hose running, otherwise, dust yourself a little wander around matrix and will be back to square one - already familiar to her matrix.

That could harm the digital SLR that can bring the camera down?

Display the camera can be damaged anything, even just not up to her for a long time. No, the camera will not take offense at you for what you do not take it in hand, it is just for this time can make friends with the ubiquitous fungus and/or simply rust alone. Digital SLR - as a little child, always needs attention. And if it carelessly handle, it can get sick and die. Therefore, it often warms warmth of their loving hands, blow off dust particles; preserves it from shocks, increased moisture, heat, extreme temperatures, and from your lovely kids.

How does the matrix SLR shooting video?

Continuous shooting Full HD video in 1080 to зеркальной digital camera mode layfvyu negative effect on the matrix - matrix fade/fade. For continuous shooting video, the matrix is extremely hot, it shortens its life. Image of superheated matrix looks malonasyschennym with color distortion in the penumbra. When shooting video frame accidentally hit a ray of sunshine, it can cause the appearance of images on various kinds of spots, sometimes with a touch of color. Such phenomena may be due to penetration of the laser beam on the matrix.


© Andrey Ko 2012***
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