Photography is a very interesting thing, shehelps us to capture the most interesting moments of life, as well as to express our mood and state of mind through pictures. For many, photography is a profession, for others it is a hobby, but in any case, photography is always one of the arts. And if you decide to more or less seriously take up digital photography, then first you need to proceed to the choice of a suitable camera. Since professional cameras have a high cost, and for those who will be engaged in amateur photography, they are simply not needed, a semi-professional camera is most suitable for this purpose. However, this is not a specific, but rather a vague and broad concept. And now you will learn what it means and how to choose a semi-professional camera.
This group of cameras is designed for peoplewhich already have few features of the standard “soap box”, but which are not going to use the camera for commercial purposes, that is, to work in a photo studio.
First of all, such a camera is differentthe ability to manually adjust the ISO value, that is, the level of sensitivity of the matrix, the ability to control the aperture and shutter speed, manual focus. In addition, in such cameras you can manually set the white balance. Also in all semi-professional cameras, in contrast to the usual "soap cases", there is the possibility of changing the lens. One of the decisive factors in deciding which semi-professional camera to choose is the choice of lenses of any brand that produces cameras. The choice of the camera may depend on how wide the optics park is at a certain company and how much this optics is available to the buyer.
If you want to engage in photo art and stillhave not encountered these concepts, then you will certainly need to know what it is. ISO is the level of sensitivity of the camera matrix. The higher its value, the higher the photosensitivity, however, at high values, noise appears (the presence in the photograph of many colored dots). Therefore, it is better to avoid as high ISO values as possible in low light, compensating for low light levels by prolonging exposure. Before you choose a semi-professional camera and finally decide that you will buy this particular model, if possible, look at the pictures taken using this model of the camera with a high ISO value, while evaluating the noise level in the photo.
Exposure is the amount of timewhich will open the shutter between the lens and the matrix of the camera. This period of time can be from a few fractions of a second to a few seconds. From the exposure depends on the amount of light that will have time to get to the matrix. But too long a shutter speed can lead to a blurred photo, to avoid this, it is advisable to use a tripod.
Aperture is a device in the lens, consistingfrom petals. She is able to open and hide behind. When the aperture is open, more sunlight strikes the matrix, so you can set a shorter shutter speed. The depth of field (DOF) also depends on how open the aperture is. If the aperture is open, the depth of field will be less; if covered, it will be more.
The so-called "SLRs" are cameras, indevice which used a mirror, which is clear from the name. It is located in front of the matrix at an angle of forty-five degrees and serves to redirect the image from the lens straight into the viewfinder, which you are looking at. This image is inverted, so pentaprism is also present in the design of SLR cameras, which inverts the image reflected from the mirror.
Also in the SLR cameras there is a mode"Live View", which allows you to display the image on the screen of the camera. If you are not going to use the optical viewfinder, because it is more convenient for you to take pictures, focusing on the screen, the mirror in the camera will not perform any functions for you.
Производством таких фотоаппаратов занимаются Many firms, the most famous of them - is "Canon" and "Nikon". The answer to the question of which semi-professional SLR camera to choose will depend on your financial capabilities and tastes and preferences. When choosing a camera, be guided by how comfortable it is in the hand, how convenient the menu is there and the location of the buttons, etc. And, of course, the quality of the pictures. You can make a couple of test shots from different cameras right in the store, and then look at the big screen which ones are better. On the built-in display of the camera to assess the quality of images is quite difficult.
System (or, as they are called,mirrorless cameras are cameras that lack a mirror and pentaprism, respectively, and there is no optical viewfinder. Such cameras are distinguished from the simplest “soap cases” by the presence of all manual settings, the possibility of changing the lens, and the larger physical size of the matrix. The quality of the photographs depends on this size. The larger the matrix, the more high-quality images you can get in low light, the less noise there will be. Therefore, even when choosing a “soap box”, first of all, one should pay attention not to the number of megapixels, but to the physical size of the matrix or to the crop factor. Crop factor is a value that shows how much the size of a given matrix is less than the size of a full frame (35x24 mm). For example, the crop factor 2 means that the matrix used in this camera is 2 times smaller than the size of the full frame. Nowadays, cameras with a full-frame matrix are quite rare and are professional, in addition, they, of course, have a high cost.
Mainly used in system camerasa matrix of 17.3x13 mm, i.e. 3x4 inches. Crop factor is two. Less commonly used matrices with a crop factor of 1.5, that is the same size as in SLR cameras. Cameras with such matrices are mainly manufactured by Sony and this is one of the most popular manufacturers of mirrorless cameras.
Also the most famous manufacturers of mirrorless cameras are "Olympus" and "Panasonic".
Так как выбрать полупрофессиональный фотоаппарат you want a good and high-quality, be sure to pay attention to the quality of the plastic from which the body is made. Also, the case may be metal - this is even better. Certainly when checking the camera in the store you need to click on all the buttons to make sure that they work well and do not sink.
Since choosing a semi-professional camera is a responsible task, you can find user reviews about the specific model of the camera that interests you (before buying it).
Now you already know how to choosesemi-professional camera, and you can go to the store. When you have already looked at the model that you like, checked the quality of its assembly, it remains to conduct another small test - check the camera matrix for the presence of broken and hot pixels. Broken - those pixels that are non-working and do not respond to light, are points of white. Hot - also dead pixels, which all the time remain a certain color.
To check you need to turn off the flash, closecamera lens and take a couple of shots at different exposures. When performing this procedure, the minimum ISO value should be set, the maximum resolution of the image and the noise reduction function should be disabled. Now you need to look at these pictures on a large monitor.
If the photo contains points of different colors -the marriage matrix, as these are the hottest and most broken pixels. They will be present on any and all pictures taken by this camera, especially unpleasant if they are in the center. If the photo is completely black, you can safely take this copy.
