Traditional Culture Encyclopedia - Photography and portraiture - Canon 700D Photography Skills Video Tutorial
Canon 700D Photography Skills Video Tutorial
Av aperture priority skills:
1. Whatever you shoot, don't shoot with the maximum aperture unless you want to keep the safety shutter.
2. Please try to use the aperture of F8~F 1 1 when shooting scenery.
3. When shooting close-ups of people and still life, the maximum aperture can be reduced by 1~2.
4. Please try to control the safety shutter above the reciprocal of the focal length and the wide-angle shutter above 1/30 seconds. If the shutter is insufficient, please increase the aperture or ISO.
Photometric method:
1. When measuring light, don't point to the sky, don't point to the darkest place, and grasp the middle value.
2. Make good use of metering modes (weighing metering, spot metering and central key metering) according to the subject matter you are shooting.
3. If you are not sure about photometry, please use AE lock to expose the surrounding gray things before shooting.
4. Try not to measure the light of white or black objects, otherwise please remember to subtract EV from black and add EV to white.
EV is exposure compensation:
Exposure compensation is also an exposure control method, which is commonly used in? 2-3EV, if the ambient light source is dark, you can increase the exposure value (such as+1EV, +2EV) to highlight the clarity of the picture.
Most small digital cameras adjust exposure compensation through menus.
In the process of digital camera shooting, if you press the half shutter, a picture similar to the final effect will be displayed on the LCD screen, and all focusing and exposure will start. The exposure at this time is the exposure of the final picture. If the picture is obviously bright or dark, it means that the automatic metering accuracy of the camera has a big deviation, and exposure compensation should be forced, but sometimes the brightness displayed during shooting is different from the actual shooting result.
Digital camera can browse the picture immediately after shooting, and at this time, you can see the brightness of the shot picture more accurately, and there will be no discrepancy. If the shooting result is obviously bright or dark, it is necessary to shoot again and force exposure compensation.
When the shooting environment is dark and it is necessary to increase the brightness, and the flash can't work, exposure compensation can be carried out to increase the exposure appropriately. When making exposure compensation, if the photo is too dark, the EV value should be increased. Every time the EV value increases, it is 1.0, which is equivalent to doubling the light input. If the photo is too bright, the EV value should be reduced. Every time the EV value is reduced, it is equivalent to doubling the amount of light entering. According to different cameras, the compensation interval can be adjusted in units of 1/2(0.5) or 1/3(0.3).
When the white object looks gray or not white enough in the photo, it is necessary to increase the exposure. The whiter the more? This seems to run counter to the basic principles and habits of exposure, but it is not. This is because the camera's photometry often focuses on the central subject, and the white subject will make the camera mistakenly think that the environment is very bright, so it is underexposed, which is also a common problem that most beginners are prone to make.
Because the shutter time or aperture size of the camera is limited, it is impossible to reach the adjustment range of 2EV all the time, so exposure compensation is not omnipotent, and it is still possible to underexpose in too dark environment. At this time, it is necessary to consider matching the flash or increasing the ISO sensitivity of the camera to improve the brightness of the picture.
Generally speaking, the smaller the brightness contrast of the scene, the more accurate the exposure, otherwise the deviation will increase. There are high and low grades of cameras. If the grade is high, the measurement will be more accurate, and if the grade is low, the deviation will increase. If it is a traditional camera, the film tolerance is relatively large, and the exposure deviation will not be a big problem within a certain range, but the CCD tolerance of a digital camera is relatively small, and a slight exposure deviation may affect the overall effect.
In a word, the adjustment of exposure compensation is determined by experience and sensitivity to color. Users must compare the image quality, sharpness, reduction and noise under different exposure compensation in order to take the best photos.
note:
The aperture in the Canon manual refers to the F value. The larger the aperture, the greater the depth of field.
Generally speaking, the aperture refers to the aperture, which is inversely proportional to the f value. The larger the aperture, the smaller the depth of field.
Av aperture priority automatic exposure.
Television shutter priority automatic exposure
automatic exposure
auto-focusing
Af-s- should be the same as SAF, with single autofocus. In contrast, continuous autofocus.
MAF- monitor autofocus. This mode can shorten the time required for focusing. Before the shutter button is pressed halfway, the camera will adjust the focal length so that you can use the adjusted focal length for composition. When the shutter button is pressed halfway and the autofocus lock is completed, the focus will be locked.
EV- exposure value, this term is usually used for exposure compensation.
Equal sensitivity. Every difference in sensitivity is equivalent to the exposure value corresponding to the aperture or shutter.
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