What is eco-photography? (2)

Resolution of digital camera

The resolution of a digital camera determines the size of high-quality pictures that can be printed or displayed on a computer monitor. The resolution of a digital camera depends on the number of pixels on the CCD (Charge Coupled Device) chip in the camera. The more pixels, the higher the resolution. It can be seen that the resolution of digital camera is also determined by its production process, and it is fixed when it leaves the factory. Users can only choose digital cameras with different resolutions, but they cannot adjust the resolution of digital cameras. As far as similar digital cameras are concerned, the higher the resolution, the higher the camera grade. However, the data files generated by high-resolution cameras are very large, which requires high computer speed, high memory and hard disk capacity and corresponding software. The pixel level of a digital camera and the size of a photo with a certain resolution can be simply calculated by the following methods: if the resolution of a color printer is N DPI and the horizontal pixel of a digital camera is m, the maximum printable photo is m & amp； Leather; N inches. For example, a printer with a resolution of 300DPI and a digital camera with a horizontal pixel of 3600 can print a maximum photo size of 12 inch (3600 & pide300) without interpolation. Obviously, the larger the size of the digital photo to be printed, the higher the pixel level of the digital camera is required. The method of calculating the display size is the same as that of printing size.

How can I take more wonderful pictures of animals? How to improve from a beginner animal photographer to a truly excellent animal photographer? I think the most important thing is not to upgrade your photographic equipment and improve your shooting skills, but to improve your photography concept! There are two goals to improve my concept: to make myself more aware of why I take pictures. ; Know more clearly what kind of works are excellent and valuable? .

In my opinion, in the field of animal photography, the most effective way to improve the concept at present is to put what you like? Animal photography? Upgrade to? Ecological photography? . So what's the difference between them? What is it? Ecological photography? And then what? At this point, Mr. Xu Renxiu, the founding chairman of Taiwan Province Wilderness Protection Association and a senior nature photographer, made a very good reflection and summary. Here, I will briefly introduce his ecological photography theory for you, which I believe will inspire friends who love nature and wildlife photography.

What is the answer? Ecological photography? First of all, what is the answer? Ecology? . Ecology? The relationship between biology and environment and the relationship between biology and biology; Ecology is a science that studies the relationship between organisms and the environment and between organisms. Then, ecological photography is: photography about the relationship between biology and environment and the relationship between biology and biology. This is a very powerful concept, which points out why you take pictures. This is the difference between eco-photography and eco-photography. Salon photography place, because? Salon photography is photography with the sole goal of pursuing beauty. This is also the reason why many animal photographers' works have no more valuable connotation. long

What are the advantages of eco-photography over salon photography? What is the connotation of eco-photography? In other words, what should an excellent eco-photographic work contain? Eco-photography has four main connotations:

First of all, beauty is the foundation and has no visual appeal. Who will look at your photos? Secondly, the truth is the scientific knowledge contained in photos, which can be interpreted through photos. This is very important, it has achieved the purpose of ecological photography? Tell biological knowledge and stories to make you surpass aestheticism; But it also puts forward higher requirements for photographers. Imagine: how can you shoot knowledge without this knowledge? After you know this knowledge, you need to show it in the picture of the photo in an appropriate way, so that this knowledge can be accepted (or more easily accepted) by the people who look at the photo.

Thirdly, kindness makes your photos full of love and awe for nature and life. The work is a reflection of your heart. If you are full of ambition, greed and unscrupulous means when taking photos, people who look at the photos can understand. If you shoot with appreciation and gratitude (thank God for giving you an opportunity to witness such a wonderful, magical and spectacular natural phenomenon), all this will also be shown in your photos. Finally, creativity, using new ways and means that others have not tried to express your ideas. Only in this way can your works be more artistic and become excellent works of art, and really good works of art can stand the test of time.

To sum up, when we practice photography martial arts, moves and weapons are of course important, but internal strength is the key to achieving excellent martial arts. Let's transcend aestheticism and come together? Ecological photography? All right!

When we say that the resolution of the printer is 360DPI, we mean that when the printer is used to output images, 360 color dots representing the image output effect can be printed on each inch of printing paper. The larger the number, the greater the resolution of the printer, the smaller the color point of the image output, and the finer the output image effect. The size of the color point of the printer is only related to the hardware technology of the printer, and has nothing to do with the resolution of the image to be output.

When we say that the resolution of a certain brand monitor is 80DPI, we mean that within the effective display range of the monitor, the imaging equipment of the monitor can produce 80 light spots per inch of screen. For example, a 14 inch display (the diagonal length of the screen is 14 inch) has a dot pitch of 0.28mm, so: the display resolution = 25.3995mm/inch &；; Leather; 0.28mm/ point? 90DPI( 1 inch = 25.3995 mm). When the display leaves the factory, the DPI value representing the resolution of the display is generally not marked, but only the point distance is given. We can calculate the resolution of the display according to the above formula. According to the DPI value we calculated, we can calculate the highest display mode that the monitor can support. Assume that the diagonal length of the effective display range of a 14 inch display screen is 1 1.5 inch, and since the display ratio in the horizontal and vertical directions of the display is 4: 3, it can be assumed that the horizontal width of the effective display range is 4 inches and the vertical height is 3 inches. According to Pythagorean theorem in mathematics, we can get X =11.5 & pide; 5=2.3 inches. So the effective display range width is 2.3? 4=9.2 inches, and the vertical height is 2.3? 3=6.8 inches. The maximum display mode is about 800(9.2? 90)? 600(6.8? 90), then a dot is used to represent a pixel.

Strictly speaking, the resolution of the device and the resolution of the image processed by the device are two concepts that are both related and different. The resolution of equipment is determined by the production process of hardware equipment. Although the resolution of some devices can be adjusted by software, they all have very limited maximum resolution, so users can't make any breakthrough in this respect. When describing and understanding the resolution of a device, we must rely on the resolution of the image it processes. The resolution of an image is a measure to describe the fineness of the image itself. For images processed by scanners, printers and fax machines, the resolution is measured in pixels per inch, that is, PPI (pixels per inch). The resolution of an image used for computer video processing is expressed by the number of pixels that can be displayed in both horizontal and vertical directions, such as 800? 600、640? 480 and so on. Whether the image itself is fine is only related to the resolution of the image itself, and has nothing to do with the resolution of the hardware equipment that processes it, while whether the image processing result is fine is directly related to the resolution of the equipment that processes it. For example, a 90PPI image is fine, and if it is printed by a printer with a resolution of 40DPI, the printing effect is also quite bad. As far as the scanner is concerned, its resolution is directly proportional to the fineness of the generated image, but its resolution can only give an initial value of the image resolution (this PPI value is equal to the DPI value of the scanner resolution), and does not limit the image resolution. We can use the software to adjust the resolution of the scanned image at will (as shown in figure 1 and figure 2). Another thing to note is that we usually talk about a 640? The image of 480 refers to the size of the image and does not contain the meaning of image resolution.

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