Questions and answers about pornography and illegal publications

Questions and answers about photography 1. Some problems about the basis of photography

1, A is the brightest and D is the darkest.

2、D

3.f=50mm The focal length of the lens is 50mm 1: 1.8 The maximum aperture of this lens is 1.8.

4. What is the depth of field?

A: A plane image of a space scene can be formed on the negative, and the axial range of the scene is called the depth of field.

The larger the aperture, the smaller the depth of field; The greater the object distance, the greater the depth of field; The greater the focal length, the smaller the depth of field.

5, these represent ISO sensitivity.

6. Incorrect white balance will affect the color temperature balance of the photo, resulting in the photo not truly reflecting the accurate situation of the shot picture.

7. Digital zoom is done according to the body of the digital camera, and optical zoom is done through the lens of the digital camera. Broadly speaking, optical zoom has little effect on image quality, and digital zoom will improve the signal-to-noise ratio of photos.

8. The first method is to fill the light with a flash, and the second method is to open the aperture, slow down the shutter and improve the ISO speed.

9. Aperture priority means that you set an aperture number first, and the camera automatically adjusts the shutter number according to the shooting situation to achieve accurate exposure. Shutter priority means that you set a shutter number yourself, and the camera will automatically adjust the aperture number according to the shooting situation to achieve accurate exposure. The application situation is not fixed, so use it according to your actual needs.

I want to have a quiz on the basic knowledge of photography and ask for some simple basic knowledge of photography.

1. Multiple choice questions (please choose the correct answer, and only one answer can be selected for each question) 1. When shooting with a digital camera under the white balance of sunlight, the shadows on the snow will appear slight □ A, blue □ B and yellow □ C, blue at high sensitivity and yellow at low sensitivity. 2. Under the condition of incandescent lamp, shoot with solar retroreflector without any filter. The hue of the image will be □ A, blue □ B, red and yellow □ C, the high-sensitivity reversal film will be blue, and the low-sensitivity reversal film will be red and yellow. 3. The color temperature is □ A, one of the white balance properties of digital camera □ B, and one of the light source properties □ C, both of which are 4. Use a digital camera to shoot the sunset scene. If you want to get the color feeling at sunset, the white balance should be set to □ A, automatic white balance □ B, daylight white balance □ C and incandescent white balance 5. When taking pictures with autofocus lens, use autofocus function □ A, no manual focusing accuracy □ B and no manual focusing specialty 6. The slowest shutter speed can be set at □ A, 1.3m,1/250s □ B,1/500s □ C,11000s. 7. The noise of digital photos is mainly manifested in □ A, when highlights and shadows are dimmed □ B, when the dimming is raised □ refer to the exposure meter reading □ A, reduce the exposure □ B, and increase the exposure □ C, without adding or subtracting 9. The main purposes of applying "right exposure" technology are □ A, accurate exposure □ B, noise reduction □ C in the later stage and contrast increase 10. The main causes of machine vibration are □ A, shutter vibration □ B, reflector vibration □ C and so on. Which method can minimize the influence of machine vibration □ A, increase the shutter speed □ B, use the mirror pre-lifting function □ C, and use the tripod 12. Other conditions being the same, the longer the lens focal length, the smaller the depth of field □ A, the larger the lens focal length □ B and the smaller the depth of field □ C, depending on the visibility 13 and the aperture f/2. The amount of light received by the lens is □ A, 4 times □ B, 16 times □ C, and when the aperture is f/8, 1/4 14. I want the car driving at 40 km/h to be framed in the photo, but the light conditions require me to use the shutter speed of 1/500 seconds when the aperture is maximum.

I should put myself in the car □ A, where I pass horizontally in front of my eyes □ B, and where I face □ C, all of which can be 15. The aperture range of the exposure meter readings measured in highlights and shadows is f/ 16-f/2, so if you use a digital camera, in order to get more details, the aperture should be set to □ A. F/8 □ C, f/2 If the sensitivity is changed from ISO400 to ISO 100, in order to obtain the same exposure, the exposure needs to be increased by □ A, 1 □ B, 2 □ C, 4 □ 17, and a polarizer can be used to reduce □ A, metal reflection □ B, and □ Lens focal length □ B, specific focusing distance □ C, maximum depth of field 20, shadow overflow □ A, too many dark details to record □ B, too dark to record □ C, and too much noise caused by too high sensitivity 2 1. If the exposure meter reading on the white surface of the gray card of the New York Institute of Photography is11008, which exposure combination can obtain satisfactory exposure □ A, 1/400 seconds, f/8 □ B, 1/20 seconds, f/8 □ C and f/8 □ c? If other conditions remain unchanged, when the output power drops to 1/4, the flash index is □ A, and it drops to 10 □ B, and it drops to 20 □ C, unchanged. 24. When ISO100, the flash index of the flash lamp is 40. If other conditions remain unchanged, only the sensitivity to ISO200 will increase. The sensitivity of this flash is increased to 80 □ B, 56 □ C, or 4025. When the position of the zoom lamp head of the flash is 35mm, the flash index is 40. If other conditions remain unchanged, just change the position of the lamp holder to 70mm, and the sensitivity of this flash will be □ A, smaller □ B, larger □ C, and unchanged at 26. Under the same conditions, the higher the sensitivity, the same other conditions, such as □ A, thinner □ B, thicker □ C, not necessarily 27. The depth of field obtained by shooting with f/2 and 50mm focal lengths is about □ A, 1/2 □ B, 2 times □ C and 4 times 28 when shooting with f/ 16 and 200mm focal lengths. The distance between the person and the camera is 4m, and the flash index of the flash is 32. In order to get the normal exposure of people and background, we use flash to fill the light for people, that is to say, the exposure combination should be set at □ A, 1/30s, f/5.6 □ B,115s and F/8 □. F/ 1 129, take photos with a digital camera with a focal length conversion coefficient of 1.5. If the focal length of the lens is 50mm, the slowest shutter speed should be □ A, 1/50 seconds □ B, 1/80 seconds □ C,1100 seconds for clear shooting. 30. The function of auxiliary light is □ A, which makes the photo level clearer □ B, reduces the light ratio □ C and improves the light ratio by 36,438. Then metering and focusing are the same thing at this time □ B, not the same thing □ C, and I don't know. 32. Shooting digital photos in RAW format requires white balance □ B, not white balance □ C, and automatic white balance must be used. 33. Reflective umbrella can produce □ A, direct light effect □ B and diffuse light effect □ C, which effect depends on the type of light bulb. 34. We need to use noise reduction function □ A, □ B, □ C and □ 35 in digital cameras when using large aperture, long exposure and telephoto lens. The light produced on cloudy days is □ A, the unsuitable light is □ B, and the suitable light is □ C. Whether it is suitable for outdoor portrait shooting depends on the white balance setting when shooting. 36. When shooting a cultural performance, if the stage lighting is dim, we can use □ A, flash □ B and high sensitivity □ C, both of which are acceptable. 37. If the light is not enough, we should □ A, fill the light with flash □ B, and use high sensitivity □ C, both of which can be done.

I have some common sense questions about photography.

First of all, the lens can be roughly divided into wide-angle lens, macro lens and pan-tilt lens. If the novice suggests buying between 35- 105, it is still ok.

About exposure, we should learn the application and cooperation of aperture and shutter. As far as normal exposure photos are concerned, the shutter time is relatively short when the aperture is small, that is, the amount of light entering the camera aperture is controlled. Here I want to explain to you that the aperture size and the aperture f value are different, the aperture f value is small and the aperture f value is small, and the aperture size is inversely proportional to the depth of field. But for the f value of the aperture, the larger the f value, the smaller the depth of field, and the smaller the depth of field.

Secondly, it is not only SLR that can take photos with sharp contrast and beautiful artistic conception. You should learn how to use light and how to compose a picture. Photography is painting with light. Of course, good photos are also inseparable from the later period. You can learn about post-production. There are tutorials about photoshop online, as well as some well-known photography websites and blogs, which have nothing to do with it. Go in and have a look and cultivate.

Well, good luck. Welcome to visit.

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