Table of Contents
Anti-Shake
Users who are new to digital cameras ignore the focus link and generally cannot take clear photos. The development of science and technology makes the anti-shake technology gradually become the standard technology of digital cameras. Image stabilization is generally divided into optical image stabilization and electronic image stabilization. For entry-level digital cameras, since they only have electronic image stabilization technology, increasing the ISO value can increase the shutter speed.
High-end digital cameras will be equipped with optical image stabilization. The principle is generally by adding a reverse complementary displacement device to the lens or photosensitive element mechanism to correct the shaking of the human hand, effectively reducing the safety shutter. Optical image stabilization is a technology that does not damage the image quality. We recommend you to use it with a certain range of electronic image stabilization.
Shutter Speed
Another factor that affects the sharpness of the photo is the slow shutter speed of the shot. In terms of increasing shutter speed, aperture setting and ISO setting are a must. We can consider the minimum safe shutter for a handheld camera to be about the reciprocal of the focal length of a 35mm camera. For example: We use 28mm focal length to shoot, the minimum safe shutter speed should be 1/30s, and the minimum safe shutter speed for shooting with 400mm end is 1/400s.
Photos taken with shutter speeds slower than the safe shutter speed are prone to blurring if shooting in low light conditions. Generally speaking, the aperture of automatic exposure will be automatically adjusted by environmental changes, and when shooting with an M-speed camera, you can increase the shutter speed by increasing the aperture. Increasing the ISO value can also increase shutter speed, but often at the expense of image quality. It is up to the user to choose the best available ISO value depending on the camera.
Exposure
Optimal exposure is the key to obtaining high-quality images. Accurately exposed images with saturated, vivid colors. Underexposed images will appear dull. Overexposure, and the level of highlights in the image disappears, and the photo appears to be washed out. Although digital photos can facilitate post-processing of underexposed photos, photos with abnormal exposure often lack light and dark image data, and the role of photo post-processing is limited.
When many users shoot with digital cameras, they will use automatic exposure mode to shoot in most cases. However, automatic exposure requires accurate metering. To accurately meter light, you must grasp the characteristics of light metering, use metering mode, exposure compensation, exposure bracketing, and scene mode use.
Digital camera metering modes generally include center-weighted metering, spot metering, multi-zone metering and so on. In most cases, the exposure will be processed automatically, but in different scenarios, the digital camera will still appear unintelligent and need to be corrected manually.
For example, when shooting against the light, the center of the screen will be blocked by objects with high reflectivity. Shooting night scene photos For very bright or dark tones in the picture, the silhouette effect of normal exposure is light background, dark background increases or decreases EV value, etc. Underexposure, accurate exposure, and overexposure are one reason that affects photo quality.
The performance of LCD screens on digital cameras varies from model to model when we look to see if the LCD screen photo exposure is optimal. We can use the playback effect to see if the exposure is accurate. Accurate exposure photos, the screen display effect is good.
Framing
Most digital cameras have a grid-assisted framing feature. The grid assist function helps users determine the position on the screen of a photo. Usually we want the photo to be square and the people in the center to make the photo more beautiful.
When shooting landscapes, use rich tonal layers to draw people’s attention to the depths of the picture. In addition, there is a more practical principle, that is, the black color of the picture is deep and the area assembly produces a sense of depth, and the white color is deep and the area assembly produces a sense of vastness.
To express the sense of space in the picture, you can also use the area of the subject and the height of the lens, the position of the subject in the picture, and the distance between the subject and the background. The scenes we are accustomed to in our lives are in a limited frame. And the performance of various equipment and techniques creates many pictures that we cannot see with the naked eye.
Expressing visual impact can create visual impact through color, deformation, movement, and virtual reality. The performance of color is our first impression of a photo. Bright, bright and cool colors can play a certain role in expressing emotions. Since our human eyes have a fixed sense of color and lack of freshness due to seeing too much, a photo with unique colors can often bring infinite reverie. Light can render the environment, and photos can express inner emotions.
Screen Structure
By taking advantage of the wide-angle and telephoto distortion of the lens, we can highlight the structure of certain pictures more. Exaggeration can bring a lot of rendering to the momentum or space of the picture. Appropriate distortion at the wide-angle end can increase the momentum of the picture. Shooting dynamic pictures often have strong artistic appeal. When shooting, you can use the flash strobe to create the effect of multiple subjects moving in a single photo. Or you can use tracking or zoom when shooting to blur out-of-focus objects.
The focus change of the human eye makes it difficult to detect out-of-focus objects. But digital cameras can easily do this with the sensor behind the lens. The combination of virtual and real can play a role in highlighting the main picture. There are still many ways to express visual impact, and users need to discover and create by themselves.
There are many factors that affect the clarity of photos. We have to use the advantages of digital cameras to achieve the best results.