How to get the ideal exposure
Photography is the art of light and framing, canvas prints online nz both be short of one cannot. For portal users new to photography, however, to get ideal exposure photo isn't particularly well, the beginners tutorial, will be to bring about the basic knowledge of exposure, exposure technique as well as the introduction to some users need to know.
What is exposure? The exposure photography is usually refers to the camera sensor (or film) receives the light from the lens and record image process. Under the ideal exposure, nz art gallery photos of light and dark details usually have better performance, and it is often said that the image can be interpreted as photos too bright and highlights the lack of details, owe their photos are too dark, integral colour and detail is difficult to distinguish. Under ideal exposure, photos of light and shadow usually have better performance details.
Know what is the exposure, so how to judge whether the exposure of the photo right? The first method is by macroscopic observation, to see whether or not in the photo of exposure and less exposure problem; The second can be judged by the camera comes with the histogram of vertical said brightness, horizontal said the brightness of the pixel number, therefore in the side of the histogram represents the darker, middle, right on behalf of the light, a picture of the "normal" exposure, if there are no special requirements or light conditions, on both sides of the histogram is high among low, if the histogram the left shows the picture darker, the more the bullish on the right shows a partial bright picture. Exposure relatively normal photos, the histogram of dark and light are often more balanced. Photos can see when the image histogram significantly towards the right. Had owed histogram is obvious to the left
Believe that many readers to see here, already know how to judge whether their photographs exposure right now. How to get appropriate exposure? In everyday when shooting, keep image details as much as possible is very important, so we need to understand the factors that influence the photos will be from the aspects of photometry, shutter, aperture and iso explain for everybody, let you in when shooting exposure are more likely to get accurate picture.
metering mode selection has exquisite what should use
First we say metering. Metering is refers to the camera by measuring your subject the brightness of the reflected light, and the process of the photos. As for metering model name is different, in the common metering mode can be divided into four kinds, respectively to evaluate the photometry, the central focus on metering and spot metering, and local photometry, different metering can directly affect the photos. Let's take a look at how can choose metering, operating mainly can better EOS 760 d with nikon D5500 as a reference.
Let's look at the evaluation photometry (i.e., nikon matrix metering), the pattern on the automatic focus, combined the subject and the overall image of metering, after the manufacturers own algorithm to calculate exposure is obtained. Appraisal metering is one of the useful for new photographic mode, to be able to do most of the subjects of demand, it is easier to make the overall exposure of natural picture. But the picture is larger or filming backlight subject, evaluation of metering are often difficult to play a role, then you need to use other photometric method.
The central focus on average metering, the pattern as the name suggests is the central area of metering on the image, at the same time for the rest of the images respectively metering. Compared with evaluation of metering, this model is more pay attention to picture the central part of the brightness, also balance the whole screen brightness, and therefore suitable for photo shooting portraits, and other method USES the center composition were about. When shooting but we always meet the irregular composition and larger complex mixed light conditions, then you need to solve by spot metering or local metering.
Finally to say spot metering and partial metering, many users in fine weather, during the filming of a portrait photo always meets the face of the black, actually encountered such a problem, first of all, can avoid to recompose backlight, if there is no method to avoid, sort of metering or local photometry is come in handy. These two kinds of metering mode metering range and narrower than the other two, and therefore more suitable for large backlight scenarios to accurate exposure of a point or area, is the difference between spot metering than local metering for metering area smaller (near to focus only), the user can be selected according to the size of the subject to these two kinds of metering.
Iso, shutter aperture shooting model how to choose
Simple understanding metering, then come back and we talk about shooting mode choice. Usually photos there are four determinants, light conditions, shutter, aperture, sensitivity, and our daily time shooting conditions are often the natural light, this is not what we can control, so we need to by controlling the shutter, aperture and iso to get the right exposure, these three corresponding need to use the shutter priority, aperture priority, automatic process sequence of the three models.
The first said the shutter. We usually say that the shutter is actually refers to the shutter speed, namely the exposure time of photographs, when other parameters are fixed, the faster the shutter speed, photos exposure time is shorter, photo whole becomes dark, and the slower shutter speed degree, the longer the exposure time is, the brighter the photos as a whole. High shutter speed moments, to record the motion of lower trajectory, shutter speed is able to capture the motion of so when the user wants to show the movement of objects, it is recommended to use "shutter priority" model, and USES the different sensitivity to attempt to shoot many times, until they get the customer satisfaction of exposure levels.
The second said the aperture. The photographer through aperture to control the camera into the different levels of light, when the other parameters constant, the larger the aperture in the more light, the brighter the photos also. In addition, large aperture can bring a shallow depth of field, easy to build background blur effect, often used in portrait and still life close-up photography; And small aperture of large depth of field is suitable for large scenes. Pictures when a user needs to control the depth of field, it is recommended to use "aperture priority" model to select the appropriate aperture, and can also be by adjusting the sensitivity to repeat shoot a few pieces, exposure to choose most appropriate photos.
Finally, the sensitivity. Digital sensitivity can be understood as the sensor sensitivity to light, usually express in ISO numerical, in short, the other parameters constant, the higher the ISO, the brighter the image. For an introduction to the user, the application of ae (P) is a very good gear, the user through the light conditions to select the iso and exposure compensation, while the camera will automatically select the most appropriate aperture and shutter speed. In general we will use under the condition of dark high ISO, but high ISO noise will affect the picture details, it is need to the attention of users.
Ideal exposure is not absolute, exposure compensation is also important
In addition to the above the shutter, aperture, sensitivity, the photographer actually can also through exposure compensation to fine-tune their own photos. Exposure compensation is to summarize the usages of "white and black" reduction, overall image environment, such as Snow White, camera metering will think live a bright light, and therefore prone to owe the revelation of the photos, we need through increasing exposure compensation to make up for the insufficiency of photos.
Still life shots can be very hot shooting subjects, and black plan is a very common way of feature. Due to the black background color is darker, the metering system of the camera will think spot light is too dark, so get pictures will appear the image, we can reduce the exposure compensation to make the background dark to highlight the main body. It is important to note that the exposure compensation is not an independent index, such as user under Av gear increase or decrease the exposure compensation at the same time, the camera is by changing the shutter speed to achieve the purpose of adjusting exposure.
By the end of the article, want to say is the ideal exposure does not have a fixed standard, picture of the exposure is right also needs to judging the photographer himself. For example, when still life shots were taken close range as the main body nature should have abundant details and color performance, whereas the vision as a background could appropriate dim. Such as silhouette again, as a kind of familiar, it belongs to owe to be its shadow according to routine exposure, but the silhouette with high contrast artistic effect if everyone is there for all to see. Readers after preliminary master the methods of adjusting exposure to many eyes, in this wish everyone can get more let oneself satisfactory work.