comparatif des meilleurs appareils photo reflex en

The size of a DSLR photo was affected by many factors. In terms of image quality settings, it was divided into L, M, S, and other different levels. If it was an 18-million-pel camera, the image size of the L-quality JPGE format was about 6 - 8M, and the M-format was about 3 - 5M. The image size of the Raw-format was about 25M, and the M-quality was about 17M. From a pixel-wise point of view, taking the 24-bit true color without compressing format as an example, one pixel-required 2-bit space. Different numbers of pixel-corresponded to different theoretical image sizes. For example, a 20-million-pixel-by-2644x2644 image compressed into JPG format would have less than 10M space. The higher the resolution, the clearer the image, the larger the overall size, and the richer the details. However, the size of the video file would also be huge. In addition, in a single-lens reflex camera, 1M = 1,000,000 resolution. For example, if 7.7M was used to take a photo with 7,700,000 resolution, it would take up about 2M of capacity. From the photo format, it was divided into JPGE and RAW format. The size of the same quality photos in different format also varied. At the same time, the default photo size ratio of the single-lens reflex camera was 3:2, 4:3, 16:9, 1:1, etc. Whether the photo size was set to the maximum should be determined according to actual needs. For example, when creating photography or advertising (wedding) photography, it should be set to the maximum resolution and use the RAW high-definition format to meet the needs of post-production, adjustment, trimming, printing, etc. For news photography or travel portrait photography, the photo size did not have to be the largest and the JPG format could meet the needs of rapid network transmission and sharing. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

To create the blurred background effect of a DSLR photo, you can do the following: 1. ** Adjusting the aperture size **: The larger the aperture, the more blurred the background. However, it should be noted that in actual shooting, the larger the aperture, the better. The image quality would be better when the aperture of the lens was contracted. Moreover, if the aperture was too large, the depth of field would be too shallow. It might cause the focus to be on one part (such as the nose), and other parts (such as the eyes) would be blurred. Therefore, shrinking the aperture by one or two gears was usually a better choice. 2. ** Adjusting shooting distance **: When shooting, move the lens close to the subject to make the distance between the lens and the subject close. After focusing, the background will appear blurred. 3. ** Focus adjustment **: If the distance between the person and the subject is fixed, the background will be blurred by adjusting the focus to zoom in. 4. ** Choice of lens **: If you use a DSLR lens (usually with a focal length of 18 - 55mm or 18 - 70mm and an aperture of F3.5 - F5.6), the background blurring effect will be limited when shooting portraits. In order to take a good photo with blurred background, a DSLR lens had to meet at least one of the conditions of a large aperture or a long focal length. For example, some specialized portrait lenses from major manufacturers, such as fixed-focus lenses with a focal length of 85mm and an aperture of F1.8 or larger, or large-aperture zoom lenses with a focal length of 24 - 70mm and 70 - 200mm, were more suitable for shooting portraits. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

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Xing En's photo could be found on the Internet.