Explanation of nouns in basic knowledge of photography

Photography refers to the process of recording images with some special equipment. Generally, we take photos with mechanical cameras or digital cameras. Sometimes photography is also called photography, that is, the process of exposing the photosensitive medium by using the light reflected by the object. Below I have compiled the basic knowledge of photography for you, hoping to help you!

Explanation of nouns in basic knowledge of photography

1, DC: the symbol of digital camera.

2. Symbol of digital camera.

3.ASA: American sensitivity standard mark.

4.ISO: international standard sensitivity standard mark.

5.GB: China standard mark of sensitivity.

6.MC: multilayer coating mark of camera lens.

7.CCD: The charge-coupled device of digital camera is the photosensitive device of digital camera.

8.LCD: liquid crystal display.

9. Shutter: A device that controls the length of light entering the focal plane of a camera.

10, depth of field: When focusing on a scene, it is clearest here. The clearance range before and after the scene is called depth of field, which is called depth of field for short.

1 1. Standard lens: a lens with a focal length equal to or slightly longer than the diagonal length of the negative.

12, short focal length lens: a lens with a focal length less than the diagonal length of the negative.

13. Long focal length lens: a lens with a focal length greater than the diagonal length of the negative.

14. viewfinder: a device on a camera that selects the scene range and has other functions.

15, object distance: the distance from the subject to the front node of the lens.

16, tolerance: the ability of photographic film to record the brightness difference of the scene in proportion and correctly express the brightness level of the scene.

17, granularity: the feeling of granular state produced by silver salt in human eyes.

18, natural light: natural light source.

19, latent image: the invisible latent image produced after the film is exposed in the camera and before development.

20. Development: the process of changing the latent image of exposed photosensitive materials into visible images with developing solution.

2 1. Fixing: After development, the process of removing the photosensitive silver halide and fixing the photosensitive silver halide to stabilize the image is called fixing.

22. Standard Gray: The gray tone produced by the reflectivity of 18%, also known as V-zone gray, is the benchmark of exposure.

23. Panchromatic film: Black and white film sensitive to seven monochromatic lights.

24. Film: It is a photosensitive material that can record images. After a certain chemical treatment, the image can be fixed.

25. Focal length: the vertical distance from the second node to the focal plane when the scene at infinity forms a clear image on the focal plane.

26. exposure latitude: refers to the degree to which photographic film can tolerate improper exposure.

27. product photography: it is also a product photo. Mainly used for product samples, brochures and product posters.

28. Main light: also known as plastic light, refers to the light that dominates the photographic picture.

29. Brightness: it is the general term for the intensity of light source, the illuminance of light on the surface of the object and the brightness of the surface of the object.

30. Lighting angle: refers to the angle between the propagation direction of the light source and the horizon.

3 1, front side light: also called oblique side light. The direction of light projection forms a horizontal viewing angle of about 45 degrees with the camera axis.

32. Two-sided light: also known as clip light. The light shines from both sides of the subject, and the brightness of the main light on both sides is equal.

33. Photography generalization: it is an artistic means for photographers to reveal the essential characteristics of things through individual unique artistic forms.

34. Photographic theme: refers to the visual image selected and organized by the photographer and reflected in the content of the photographic picture.

35. Appearance beauty of photography: It means that in portrait photography, the inner beauty of characters can only be displayed through visual artistic images.

36. Natural beauty of photography: All the beauty that exists in real life is called natural beauty when it is in a natural state without being processed.

37. Sense of quantity in photography creation: it is a plastic art term. Photography refers to the feeling of the weight, length, size and quantity of objects.

38. Negative image: refers to the image formed on photosensitive film after a series of processes such as photosensitive, developing and fixing.

39. Sharpness of film: also known as contour sharpness. It is an objective standard to measure the sharpness of image edges. That is to say, the clarity of the boundary where two regions with different densities meet on the emulsion is recorded.

40. Artistic language: it is the general name of modeling factors and means in photography, among which the most important are light, tone (color) and line.

4 1. Step-by-step exposure method: Step-by-step exposure method, also known as bracket exposure method, is to shoot the same subject with several different exposures, usually according to the estimated normal exposure, and then increase and decrease the exposure respectively.

42. Meaning of EV value: EV value is short for exposure value. He uses a number to represent the exposure required by the film, and a number to represent the unified exposure, which can make the problem simple and easy to handle. This number is the EV value.

43. Depth of field: Depth of field refers to the distance between the nearest point and the farthest point that can have a clear impact on the subject.

44. Color: Everything in nature can show various colors under the sunlight, which is color.

45, color cast: refers to black and white, refers to two kinds of color cast, they are only divided into light and dark.

46. Photography aesthetics: usually refers to the understanding of the evaluation criteria and aesthetic value of photographic works of art for scene selection.

47. Variable contrast photographic paper: also known as multi-tone enlarged paper. It is specially used to enlarge black and white photos. It is photographic paper that can change the contrast number at will.

48. Sports photography: photography with the theme of various sports.

49. 135 camera: a small camera using 135 film.

50. Digital camera: A new camera that uses CCDCMOS photoelectric sensor instead of film and records images through photoelectric conversion.

5 1, pixel: the basic unit of digital image.

52. Exposure meter: an instrument for measuring exposure value.

53. Smooth light: also known as plane light or front light, the light in front of the subject in the same shooting direction as the camera lens.

54. Scattered light: also known as diffuse light, light with unknown direction. Such as light in cloudy days or shadows.

55. Sensitivity: refers to the sensitivity of film to light intensity.

56. Lens: A transparent body with two spheres or a plane and another sphere is called a lens.

57. Refraction: The phenomenon that light changes its original propagation direction at the interface when it enters another medium from one medium.

58. door b: used for long exposure. Press the shutter button and the shutter will open. When you release your hand, the shutter will close.

59. T-door: used for long-term exposure. Press the shutter button, the shutter will open, but it will not close after being released; Press the shutter again to close.

60. Self-timer: also known as shutter delay device. Can be used for self-timer or slow photography.

6 1, artificial light: artificial light source.

62. Visible light: The human eye can see the light of an object. Usually refers to sunlight, light with a wavelength between 380 mm and 780 mm.

63. Three complementary colors of light color: yellow, magenta and cyan.

64. The three primary colors of light: red, green and blue.

65. Polar hue (polar color): Black and white are two extreme colors.

66. Aperture: An aperture diaphragm (valve) device used to limit the passage of light in a lens.

67. Super lens (fast lens): a lens with an aperture coefficient greater than f/ 1 and 2.

68. Exposure combination setting: Use different aperture and shutter combinations for equal exposure.

69. Color-blind film: black-and-white film that only feels blue-violet light and does not feel other monochromatic light.

70. Dichroic film: Black and white film that is completely sensitive to monochromatic light except red light.

7 1, density: refers to the amount of silver salt accumulated in a certain part of the negative.

Reciprocal rate: refers to the interaction between shutter speed (exposure time) and aperture number (luminous flux).

73. Light intensity: refers to the relative intensity of light. It varies with the output of the light source and the distance to the light source.

74. Direct positive photographic paper: It is a kind of direct positive photosensitive material that can obtain positive images by one-time development without development and development.

75. Stage photography: A photographic art that focuses on stage performances of drama, dance, music, folk arts and techniques.

76。 The warmth and coldness of colors: it is people's feelings and associations about the warmth and coldness of different colors established in long-term production and life experience.

77. Aesthetic attitude: it is a special psychological state that the aesthetic subject must have at the beginning of aesthetic activities.

78. Aesthetic enjoyment: it is an emotional pleasure obtained by the aesthetic subject through the feeling of the aesthetic object.

79. Emphasis on center metering: Emphasis on center metering is also called center key metering. His sidelight reading is mainly based on the main brightness of a certain area of the framing picture, supplemented by the brightness of other scenes. Most of this specific area is located in the center or below the center of the picture.

80. Color temperature: Color temperature is a concept representing the spectral composition of a light source. Generally speaking, the color temperature is a sign representing the color of light, not the cold and warm temperature of light.

8 1, tolerance: the tolerance of film refers to the ability of film to record the light and dark range of the shooting scene in proportion; The tolerance of film means the ability to allow exposure errors.

82. Sensitivity: Sensitivity, also known as film speed, refers to the sensitivity of film to light and is the most important and basic performance of film.

83. Resolution: The resolution of film, also known as resolution and resolution, refers to the expressive force of film on the details of the scene, which can clearly record the subtle parts of the scene, and vice versa.

84. White balance: White balance is a color correction function for different lighting environments. The role of white balance is similar to that of traditional cameras adding color filters in color photography to obtain accurate color reproduction.

85.CCD pixel: CCD pixel is the smallest unit to form an image signal on CCD. It is not difficult to understand that the higher the pixel, the higher the definition of the image.