Many parents waiting for baby, run to the store and buy expensive professional SLR camera that does not miss a single minute of the life of his beloved child and capture all his achievements and exploits.
Without going into the specifics of artistic shooting modes, without knowing the principles and laws of the work of photographic equipment, happy parents just put "auto" mode and start to shoot, hoping to get a bright, juicy shots, "how in the magazine ...", naively believing that smartTechnology will do everything for them.
However, after the first trial photo shoot of a pregnant mother at home, do not get the desired result (dull colors, blurry picture yourself fired lit up his face and darken the background), amateurs disappointed.And as a result, bad mood, expensive photographic equipment gathering dust on the shelf as unnecessary, and in its place came the old shabby "mylnitsa", which is much easier to remove.And the situation is with pictures of children a bit more complicated.
But nothing is impossible does not happen, right?Let's deal in stages.
In today's article I will talk about the technical side of photography.
any beginner photographer, first of all, you must master the four basic concepts: aperture, shutter speed, exposure / exposure value and the ISO (sensitivity of the recording element, in this case, the CCD) and their relationship with each other at the time of the shooting.
This has already been a lot written all sorts of articles and papers, so the most detailed information you can easily find on the Web.I try as much as possible simple, short, and, most importantly, available to talk about these concepts.
diaphragm concept applies only to the camera lens. Aperture - the hole in the camera lens through which light enters to the recording matrix.Aperture value is indicated by the symbol «f» on the screen of your camera, and can be set to 1.2 2 2.8 4 5.6 8 11 16 22 32, depending on the specifications of your lens..In other words - the value of the hole in the lens.The smaller the aperture the larger hole in the lens, the more light that enters the matrix.
Extract. Towards the light passing through the lens to the matrix, there are so-called "blind", which, like the diaphragm, is metered amount of light, but the hole diameter and exposure time of the photosensitive element.Shutters are different - mechanical and electronic.After pressing the shutter button by photographer cameras, the shutter opens and passes light on svetochustvitelnuyu matrix.But it happens very quickly.Shutter speed is measured in fractions of a second (1/250, 1/500 - shutter speeds and 1, 2 sec. Or more - long exposure, etc.).
Exposition - if we take the most simple and, in general, the amount of light required for image recording on svetochustvitelnom element with a given sensitivity, brightness proportional reproduction, the same as that of the subject.For the required amount of light corresponds to the so-called exposure value - aperture / shutter speed.(If the shutter speed is short - the aperture value is increased, and vice versa, if a long exposure - the aperture value decreases)
In modern cameras automated calculation of exposure value.In professional it may be entirely manual or partially automated.
ISO
ISO - unit of measure the amount of light needed for proper exposure photos.Typically, the display is designated as follows: ISO 50, ISO 100, ISO 200.
With high sensitivity (high values ISO) light is necessary at times less than at low (at ISO 200 should be 2 times less light than at ISO 100and 4 times less than at ISO 50), but there is a downside, the higher the ISO, the more noticeable the picture appears the so-calledLight Noise: small scattering of points vydnaya when zooming photograph and drops detail.Therefore it is better to choose the lowest ISO, and without special needs do not increase it.
And now the most important relationship of these three parameters.For prostate explanations explain in simple examples, without going into the technical details.
Let's say you want to take a picture of a child's play, who sits in the room in the daylight.What Would professional wedding and family photographer .
order to constantly take pictures of the child vdigayuschegosya makskimalno clearly requires a short excerpt.To this end, the photographer would Preveli camera in shutter priority mode (usually denoted by the symbol TV).In this mode, under your chosen shutter speed automatically adjusts the aperture value.
would put short viderzhku at least 1/125 or 1/250.It is necessary to monitor the changing values of the aperture automatically depending on the selected shutter speed (See above. - Exposure value).If the aperture value is too high, the picture will turn out dark.To avoid this, you can increase the ISO value to the required.But this has to be careful not to spoil the photo light noise.
But let's say, if the value of 1/250 aperture value is too high, that the picture is dark, and raised the maximum ISO value, and you must make the photo brighter.Then, increase the shutter speed to 1/125 - thus decreasing the aperture value and has a given value ISO picture becomes brighter.As a result, we get a clear picture of the child plays, quite bright and with an acceptable level of noise.
Well, now for the assimilation of information Practice on your child.The next article will be considered on the aperture priority mode and the light-sensitive lenses.
Do not forget to practice, practice and more practice, will allow you to learn and work successfully with the camera in shutter priority mode.
