Introduction to basic knowledge of camera

Introduction to basic knowledge of camera

Basic knowledge of camera introduction, the photography world is extensive and profound, and there are many terms. Photography is a hobby of many people. For many beginners, it is not easy to master the shooting technique in a short time. For photography, you must know the basic knowledge of taking good photos. The following is the sharing of basic knowledge about camera introduction.

Introduction to basic knowledge of camera 1 1, exposure and exposure amount refer to aperture, shutter speed and sensitivity ISO；; Exposure is simply the brightness of our picture. Too bright is overexposure, also called overexposure, too dark is underexposure, also called underexposure. Relevant exposure meter data are available for reference;

2. Aperture is the aperture size of light entering the camera. The larger the aperture (the smaller the numerical value), the larger the entrance aperture, and the more light enters. Therefore, the greater the exposure, the higher the brightness of the picture, the shallower the depth of field and the higher the background blur, and vice versa.

3. Shutter speed refers to the length of time that light enters the camera. It refers to the time from the opening to the closing of the shutter. The faster the shutter speed, the shorter the light entering time, the less light entering, the smaller the exposure and the darker the picture, and vice versa.

4, sensitivity ISO, sensitivity is the sensitivity of the photosensitive element to light, the higher the sensitivity of light with the same brightness, the more sensitive the photosensitive element is to light, the brighter the picture, and the higher the sensitivity will produce noise. It is generally recommended to use it with caution;

5. White balance is simply the setting of color temperature K in the camera. Generally, the middle value of K value is calculated based on 5000: when the picture is blue, when it is cold, the K value is lowered to 5000; When the picture is yellow and warm, adjust the K value to above 5000;

6, exposure compensation, exposure compensation is to increase the light or reduce the influence of light on the brightness of the picture after we measure the light. This function is set to prevent metering failure in some cases. There is a principle of adding white and reducing black. If the picture is dark after shooting, you can adjust the exposure compensation to the positive direction to increase the exposure, and vice versa;

7, metering metering mode, metering is a process for our camera to measure the light of the picture; Measurement methods mainly include evaluation measurement (average measurement), central key average measurement and field measurement;

Evaluation photometry (average photometry) means that the camera divides the picture into small squares, measures the light of each small square separately, and then obtains the final exposure by statistical average, but it is not practical for large light ratio scenes; The center key average metering is the average metering in the middle area of the camera, not the whole picture, and it is the most practical metering method.

Because most of our cameras rely on the central area of the photometric picture, which is also the most widely used; Spot metering is the most accurate metering method for a small spot metering, which can ensure the most accurate metering of our subject;

8, focusing and focusing methods, focusing is the process of making our subjects shoot clearly; Manual focusing, which depends on manually adjusting the zoom ring to adjust the sharpness of the subject, is generally used when autofocus cannot meet the needs. After all, manual adjustment is a waste of time.

Single autofocus, focusing on the subject once, suitable for shooting still life; Continuous autofocus, after half pressing the shutter, the object is continuously focused and the object moves. Keeping the shutter half pressed can make the focus follow the moving object, which is suitable for shooting moving objects; Fully automatic focusing, which uses the camera to judge the focus and automatically switches between single automatic focusing and continuous focusing according to whether the subject is moving or not;

Basic knowledge of cameras 2 ① Basic ethics of photographers-never be an annoying photographer.

1. Use flash carefully-don't use flash at meetings, stages or concerts, because your flash will affect others. When you want to take pictures, it will affect the performance of the people on the stage and other audiences. Secondly, the overhead flash is definitely not enough, because there is such a thing as "flash index"! In addition, it also destroys the light and shadow of your own pictures. Corresponding measures, large aperture, improve ISO!

2. pa. When you suddenly find a situation worth shooting, you might as well record this moment, but when there is a front of a character in your photo, or when the character is the main composition object, you should get the permission of the party concerned, or try not to publish it unless you are a reporter. If the parties don't like being photographed, don't take pictures, which is a kind of disrespect. )

Good photo = skilled camera adjustment+shooting angle+shooting opportunity+good composition+inner thinking+shooting experience.

② "concept" of photography

SLR cameras imitate people's vision, and what you see with your eyes can be accurately restored into photos with SLR cameras and passed on to others, so that they can be there. (personal opinion)

When we pick up the camera to take pictures, the question is in front of us: What do you want to take? Or what do you want to convey through photos, a person, a thing, or a person? The expression of photography is like writing an article. Before writing, you must "make up your mind" for your article and create the central idea of an article. Also known as the entertainment center.

It is very important to establish the "intention" of a photo. A careless photo is the same as a "waste". Looking at a photo is like listening to an incoherent person. You can't understand what he really wants to say.

A photo can only be used to explain one thing!

If we try to express many problems in one photo, it can be said that it is a failure. It is also beautiful and interesting to be reluctant to part with many useless elements when composing music. Many beautiful things together lead to the observer's vision drifting away, thus making the "conception" decline.

Painting composition is addition, and simple photographic composition is subtraction. The real photographic composition is to increase information and elements as much as possible without affecting the concept of the picture. Everything depends on the purpose of communication (except for special photography such as photo id or portrait).

Basic knowledge of camera entry 3 How to get started quickly for novice cameras

First of all, congratulations on having your own love machine. No matter what brand, type, expensive and cheap, professional or beginner, we must believe that we can take wonderful photos with it.

Compared with other arts, creative tools are more involved in photography (the author can write any work with any pen, but the photographer can't shoot any work with any camera). So you need to master the tool you use-your camera.

First of all, figure out what aperture, shutter and ISO sensitivity are.

Simply put, the aperture is a hole in the lens through which light passes. This hole can be enlarged or contracted. The shutter is a "door" in the camera. Every time you open the door, the camera takes a picture. The opening time of this "door" can be long or short. Sensitivity is the sensitivity of the sensor to light, and its essence is to sacrifice image quality for aperture and shutter.

Now, your mastery of the camera has reached the level of the most professional photographer decades ago. To some extent, you have completely mastered the use of the camera. Other functions can be learned later, or temporarily when they do not exist.

Next, remember the following simple principles:

1, be sure to hold the camera steady when taking pictures. One of the main differences between professional photographers and ordinary amateurs is that their hands are steady, so they can take clear photos. Try to support yourself or your camera with tripods, railings, mailboxes, stones, desktops, walls and other objects.

2. Find a theme for the photo. If you photograph a person, or something specific, make sure that he is the most eye-catching in the photo. For example, let him make up the map. The most common habit of ordinary people is to take everything into the picture, so you have to do the opposite.

3. Change the shooting angle. If you are used to standing, you might as well start squatting or standing to shoot more. Just try it once or twice, and you will find that your photos are very different from before. Similarly, when you are always squatting, you should look for a newer angle.

By doing the above three things, your photos are obviously different from ordinary people (even some people who have been interested in photography for many years).

Last but not least: keep learning. Systematic study of composition, color, post-processing, art theory and other knowledge. The above points are the result of simplifying and refining the theory. After learning theories, you will understand and apply them more deeply.