I have been studying the photography technology of digital cameras recently. Do you have any good books?

The "New York School of Photography Photography Tutorial" is too troublesome. I suggest you check it out online. I recommend a few websites to you: Color Shadow Wuji China Photography Network Hummingbird Network. There is a lot of practical knowledge and techniques on it. Learn it. Very quickly. I am giving you a simple tutorial, you can take a look first. Full training program for beginners in photography (1) Training 1. Panoramic depth practice. Subjects: general scenery, flowers, urban buildings and other high-impact scenery. Requirements: All images are in focus. Recommendation: First use a wide-angle lens: 24MM-35MM to shoot, aperture: F11-16, aperture priority AE mode. Training 2. Single subject focus exercise Requirements: Only focus on the main subject with shallow depth of field. Recommendation: Medium telephoto lens: 85MM or above, aperture F5.6 or larger. Aperture priority AE mode Training 3, freeze-frame practice Subjects: sports events, walking cars, trains, flowing water, waterfalls, etc. Requirement: Record the instantaneous movements or instantaneous expressions of subjects in intense motion. Recommendation: high-speed shutter speed of 1/1000 second or more, shutter speed priority AE mode. Training 4. Dynamic exercises Subjects: sports events, dynamic people, flowing water, waterfalls, etc. Requirements: Part of the body of athletes and dynamic people is blurred or the background of the moving body is blurred. Flowing water, waterfalls, etc. have a streamlined feel. Recommendation: Slow shutter speed 1/15 second-11 seconds. Start practicing at 1/30 second, then practice at 1/15, 1/8, 1/4, 1/2, and 1 second step by step. Use a tripod. Training 5. Framing practice Requirements: highlight the theme, make the picture concise, and be able to convey the atmosphere of the scene being photographed. *This training is the basis of composition training. Recommendation: telephoto lens, large aperture. Training 6. Close-up practice. Subjects: flowers, still life, insects, etc. Requirements: The subject should account for as large a proportion of the screen as possible, highlighting the shape and interesting parts of the subject, and high definition. Recommendation: Use a macro lens or macro function and a close-up lens, the shortest shooting distance, and keep the lens parallel to the subject. Use a tripod and shutter release cable. Training 7. Practice using various focal length lenses (each focal length of the lens). Use various focal length lenses (each focal length of the lens) to practice shooting, so as to understand the characteristics of each focal length of the lens, understand the relationship between painting angle and perspective, and make full use of the characteristics of each focal length. Different depth of field. Standard lens: A lens with a focal length of about 50MM - extremely natural, no exaggeration. Wide-angle lens: A lens with a focal length of less than 35MM - emphasizing the sense of distance and nearness. Medium telephoto lens: A lens with a focal length of 85MM to 135MM - the closest perspective (near and far) to the human eye, which can accurately reflect the shape of the subject, and is mostly used for portrait photography. Telephoto lens: A lens with a focal length of 200MM or more - little sense of distance and a compression effect.

(Easy to shake, try to use a tripod) Exercise 8. Horizontal and vertical composition of subjects: scenery, mountains and rivers, buildings, people, etc. Requirements: Use horizontal composition to express a sense of stability and breadth, and use vertical composition to express a sense of depth and depth. For the sense of height, there should be no useless space in the picture. Suggestions: 1. Shoot the same subject in horizontal and vertical compositions, and compare the different feelings of the work. 2. When the horizontal composition shows a sense of stability, use a lens with a focus higher than the standard , use a wide-angle lens to express a sense of spaciousness. 3. Use a wide-angle lens to express a sense of depth and height in vertical composition, and pay attention to the position and configuration of close-up and distant views in the picture. 4. Pay special attention to the horizontal and vertical when composing the picture, and use a tripod. Strengthen photography skills Full training program for beginners in photography (2) Exercise 9. Triangular composition. Subjects: triangular or triangular-like scenery, buildings, characters, etc. Requirements: Use triangles to configure different positions in the picture to express a sense of stability, movement, and height. Suggestions: 1. There is an easy-to-recognize triangular shape in the picture. The focus of multiple objects composed of triangles should be solid and have a sense of balance. 2. Use a wide-angle lens below 20MM for tall and slender scenes such as high-rise buildings and roads. . 3. Use the depth of field prediction function. Exercise 10. Symmetrical composition subjects: all scenery, figures, buildings, etc. with symmetrical composition properties. Requirements: Use up, down, left, and right symmetrical compositions to express a sense of stability and a surreal artistic conception. Suggestions: 1. Choose a beautiful symmetrical shape. The focus points on both sides of the symmetrical shape must be solid, and the performance of each symmetrical shape must be obvious. 2. Try to use a lens with a focus point above the standard. When using a wide-angle lens, pay attention to keeping the camera and the subject parallel. 3. Use a polarizer when shooting symmetrical compositions on the shore and in the water. 4. Use a tripod when you have to use a small aperture to achieve panoramic depth. Exercise 11. Vertically and horizontally compose subjects: landscapes, buildings, etc. Requirements: How many elements are represented in the picture? Simple beauty composed of parallel or vertical lines. Suggestion: The lines forming the picture should be kept horizontal or vertical, the lines should be beautiful, and the horizontal or vertical line shapes should cover the entire picture. Use a tripod to practice 12, S-shaped, diagonal composition to take pictures Objects: Roads, rivers, mountains, bridges and roads in cities, etc. that have an S shape or diagonal lines. Requirements: Use S shapes to express a sense of depth, and use diagonal lines to express a sense of extension and movement. The S shape must be accessible to the whole picture. If the two ends are broken in the middle, there should be space in front. Suggestion: The arrangement of S-shaped and diagonal lines should have a sense of balance. Carefully feel whether the work has a sense of depth and breadth, and whether the subject is clear. The subject should be highlighted. Practice 13. The golden section method is used to compose the subject: anything is acceptable. Requirements: The subject to be represented must be at the dividing point, line or near the dividing point, the composition must be balanced, the subject must be prominent, and there must be no redundant parts in the picture. Suggestion: First compose the picture according to your own ideas, and then use the golden section method. Unit 3: Light training [1] Exercise 14. Daytime flash exposure compensation Subjects: people, flowers, pets, small-scale natural scenery, still life Such as close-range small-scale scenery. Requirements: Use when the above subjects are in backlight or side backlight and the surrounding light is stronger than the subject, or when the subject is in a dark place during the day. Suggestions: 1. Use flash synchronization speed metering (average metering) to obtain the aperture value, and then divide the flash index by the aperture value to obtain the shooting distance, so that you can obtain accurately exposed photos. For example: the camera's flash synchronization is 1/125 seconds, the F value obtained by the camera's automatic metering is 16, the flash index (GN) is 40, that is, 40/16 (F) = 2.5M, the shooting distance at this time is 2.5 meters. 2. When the guide number (GN) and distance are known to find the aperture (F), divide the guide number by the distance to find the aperture (F). That is: GN/distance=F. Exercise 15, use flash to reflect the three-dimensional sense of the work. Subjects: people, flowers, pets, still life, etc. Requirements: Use an external flash and use a cable to move the flash away from the camera. Project light from above or from behind to create a three-dimensional effect. You can also project it to the ceiling or use a reflector to create refracted soft light. The specific lighting method and direction are based on your own intentions. specific arrangements. But try to avoid heavy shadows. Suggestion: If possible, try various lighting methods and exposure compensation to create a three-dimensional feeling. Exercise 16. Indoor and night light photography. Subjects: gatherings under indoor lights and city light night scenes, etc. Requirement: Use color temperature to create a unique (reddish) atmosphere that is invisible to the naked eye indoors and under night lights. Recommendation: The light arrangement in the picture should be as uniform as possible. It is best to have no strong light source near the lens and no strong light entering the lens. Use a tripod when shooting still life. It is best to use ISO400 film when taking snapshots. If you want to get a work that is faithful to the original color, use an 80A filter to correct the color temperature. Exposure cannot be passed over. Reference: Color temperature: sunny day = 5500K, cloudy day = 6500K, morning and evening = 4500K, general lighting to strengthen photography skills Beginner photography training program (3) Exercise 17, morning sun, sunset, night scene Subject: morning sun, sunset mountains, coastlines, natural scenery and night views. Requirements: It is necessary to fully reflect the atmosphere of the day and night, and reproduce the gorgeous scenery of the day and night. There should be no extraneous objects entering the picture, and it is best to have no halo.

Recommendation: Use manual, basically the aperture is around F8 to 11, AE aperture priority, adjust the focus to infinity for long shots, focus on objects that are easiest to see such as point light sources within 10M, use a tripod, and consider multiple exposures . Exercise 18. White objects. Subjects: white objects such as snow scenes, white beaches, white flowers, etc. Requirement: Clearly reproduce the texture and tone of white objects. Recommendation: Appropriate exposure compensation based on the actual measured exposure. The compensation amount is generally between 0.5 and 1.5EV based on the proportion of white objects in the screen and the intention of your work. When there are black and white objects in the screen, adjust according to the proportion of each. Unit 4: Lighting Training [2] Exercise 19. Use of backlighting (transmitted light) Subjects: characters, landscapes, flowers, still life and snapshots illuminated from behind. Requirements: Make full use of the characteristics of backlighting to create a sense of transparency and three-dimensional sense. Pay attention to the brightness balance between the subject and the background and avoid halos beyond the creative intention. Recommendation: Use exposure compensation and reflector. Exposure compensation amounts are +0.5, +1.0, +1.5, +2 .0EV, etc., the greater the compensation, the brighter the subject. If you don’t know the amount of exposure compensation well, you can compensate in sections and take more than one shot each to ensure a successful shot. Exercise 20. Use of side light. Subjects: people, scenery, flowers, plants, pets and snapshots related to this kind of light. Requirements: Make full use of the effect of shadows to make the atmosphere of the picture match your own shooting intention. Improve your shooting through practice. Sensitivity to light. Suggestion: When shooting, observe the subject in the order of forward light, side light, oblique side light, semi-backlight, and backlight, and pay attention to the difference in the three-dimensional effect of the object created by side light and backlight. For example Use strong side light to create a man's fortitude and weak side light to create a woman's tenderness, etc. Use a hood. Exercise 21. Use of spot light and effusion light in the forest. Subjects: Forests with effusion characteristics, landscapes under cloudy skies such as mountains, rivers, lakes and seas, etc. Requirements: Make full use of the characteristics of spot and effusion light to create Create an impressive and touching atmosphere. Suggestion: Pay attention to the control of light ratio range and exposure. The difference between light and dark should be appropriate. Use spot metering to measure the exposure in bright and dark places, and then take the middle value for the final exposure. Exercise 22. Application of extreme exposure. Subject: any subject that you want to express in a high-key manner (light shadows) or a low-key expression (high contrast). Requirements: The photographic intention and theme should be clear, and high-key or low-key should be considered. It is necessary to coordinate the atmosphere of the subject. Recommendation: high-key exposure compensation from 0 to +2.0, low-key exposure compensation from 0 to -2.0. Through segmented exposure, master the exposure under various conditions. The effects of exposure compensation. Exercise 23. The trajectory of light. Subjects: moving cars, boats, starry sky, fireworks, etc. at night. Requirements: express the flow of light smoothly. The color, shape, and size of the light streamlines must be coordinated with the surrounding atmosphere, and the exposure must be appropriate. . Recommendation: Use average metering and center-weighted metering modes. You can also set the aperture to F4 or F5.6, and the exposure to 30 seconds to 2 minutes (bulb can be used). Fireworks generally use ISO100 film with an aperture between F5.6 and F11. The exposure time of the starry sky can be up to 1 to 2 hours. All of the above use a tripod. Exercise 24. Objects illuminated by lights Subjects: buildings and plants illuminated by lights at night in the city. Requirements: The viewing angle should reflect the charm of the subject, choose an exposure that can fully express the atmosphere, and all the subjects in the picture The proportion must be appropriate. Recommendation: Use a tripod, shutter release cable, manual mode, B door or T door, and use exposure compensation +0.5-1.5EV. When composing the picture, pay attention to the brightest part and the darkest part of the picture to avoid a huge difference in brightness. Pay attention to the reciprocal arrhythmia problem when exposing for a long time. Use a wide angle lens. Strengthening Photography Skills Beginner Photography Training Program (4) Unit 5: Training exercises emphasizing color 25, 26, 27, 28, 29, 30 quilts with red, blue, yellow, green, white and black as the main features respectively Photograph the subject and do exercises to express the theme. Subjects: various objects with the above colors and people dressed in colors, flowers, etc. Requirements: To show the distinctive characteristics of the above colors, grasp the three elements of color: hue, brightness, and saturation. Suggestion: Pay attention to the performance of warm and cold colors, use color filters if possible, and use bracketing photography to experience the effect of exposure compensation on color performance. Exercise 31. Express the transparency of water. Subject: any object related to water. Requirements: Pay attention to the overall performance of the work while expressing the transparency of water. Recommendation: Pay attention to the light reflection on the water surface, use a PL mirror, and rotate the PL mirror to find the best performance. Exercise 32. Color contrast. Subjects: fields, parks, buildings, etc. with contrasting colors. Requirements: Use color contrast to enhance the appeal of the work. Suggestion: Don’t let too many colors enter the picture. The greater the brightness difference between the contrasting colors, the stronger the contrast. Bright colors and contrasting dark colors are more eye-catching. The real focus and virtual focus of the same color can form a contrast. Exercise 33. Black and white photography. Subject: any object, person, etc. Requirements: The relationship between the theme and the background, and understanding of the characteristics of black and white photography. Suggestion: It is necessary to understand the specific changes after color becomes black and white, consider red as rich black, yellow as gray, etc., and understand the relationship with gray scale.

Exercise 34. Expression of monochromatic colors. Subjects: groups of plants in nature, large areas of monochromatic flowers, indoor rooms with uniform colors, etc. Requirements: Effective use of unified tones, balanced composition, and full control of color shades. Suggestion: Pay attention to the saturation of the color, make the color expression in the picture more relaxed, and use the color temperature filter. Strengthen photography skills. Full-course photography training program for beginners (5) Unit 6: Training to express movement and emotion. Exercise 35. Expression of movement. Subjects: sports, animals, commemorative events, flowers, rivers, etc. Requirements: Fully record and express moving objects or people, show the power and dynamic beauty of movement, reasonably compose the shot, and master the shutter speed and shutter timing suitable for the scene being photographed. Recommendation: If conditions permit, try to use shutter priority mode. When freezing high-speed motion, use a shutter speed of 1/500-1/1000 seconds, when showing a sense of flow, use a shutter speed of 1/15-1/4 seconds, and when chasing shots, use 1/ 15 or 1/30 seconds. Exercise 36. Expression of the sense of presence. Subjects: fire and accident scenes, sacrificial activities, ceremonies, natural weather conditions, etc. Requirements: Try to express a sense of presence and make people immersive. Even for ordinary subjects, technology and equipment must be used to create a sense of presence. Recommendation: Use a super wide-angle or telephoto lens as close as possible to the subject, and use F11, F16, or F22 as the aperture to achieve a large depth of field. Use a tripod to express natural weather conditions such as typhoons, heavy rain, fog, and rapids. Shutter speeds of 1/8, 1/4, and 1/2 seconds are prioritized, and bracketing shooting methods can be used. Exercise 37. Expression of the sense of silence. Subject: natural scenery. Requirements: The photographer should be quiet and stable, choose the best shooting time and weather, and choose a composition that is stable, concise and easy to convey a sense of tranquility. Recommendation: The best shooting time is at dawn, evening, moonlit night, rainy day, fog, snowy day, etc. Choose symmetry, triangles, etc. to increase the sense of tranquility. The composition should be horizontal and vertical, and there should be no tilt to emphasize the sense of concentration and stability. Use a tripod. Exercise 38. Expression of Emotions Subjects: close-ups of faces and bodies of people and animals (momentary capture of action). Requirements: Master the best shutter timing, achieve emotional connection with the person or animal being photographed, pay attention to the expression of other body parts in addition to the face to match the subject, and pay attention to every detail of the composition. Suggestion: Start practicing with the people around you, especially children and pets. Pay more attention to their emotions and find interesting characteristics, and then use the telephoto lens to capture the person or animal when they are not paying attention. Try to use automatic mode when you start practicing.