Experimental purpose of macro photography

Macro photography refers to the optical ability of a camera to shoot an image as big as (1: 1) or slightly smaller than the actual object through the lens. For example, taking a flower with a diameter of 2 1.6mm can fill half the area of 35mm film (diagonal length is 43.3mm). The magnification of the flowers in the photo is 43.3: 2 1.6, which is 2: 1(2 times). The magnification of macro photography is usually between 1 and 50 times, and strictly speaking it should be between 1 and 10 times.

Chinese name

macro photography

Foreign name

Macro photography

content

Photographic works with the image ratio of 1: 1 or above.

meaning

High magnification close-range shooting.

trait

Get a larger image than the original object.

quick

navigate by water/air

Photography rules

Common way

Main equipment

Skill points

Macro works

Basic definition

"Macro" refers to close-up shooting, with a large magnification, and the human eye often can't see the objects close to 15cm clearly, but the optical school of professional macro lens is designed according to the needs of close-up shooting. According to German industrial standards, the imaging scale is greater than 1: 1, which is called macro photography. The dandelion on the right shows an image as big as the scene on the negative. The definition in the American Dictionary of Contemporary Photography is: "Photography with the image ratio of 1: 1 or above". The proportion we say here refers to the proportional relationship between the size of the negative image and the real thing. The maximum shooting ratio of the standard lens of 35mm camera is1:10. As a matter of fact, it is internationally recognized in the photography field that the images with the ratio of1:1:4 belong to macro photography, while those with the ratio of10:1~ 200:1belong to macro photography.

dandelion

Photography rules

1. Enlarge it to about 5 times according to the proportion of the main body;

2. In general, use an aperture not greater than f 16;

3. It is necessary to use shallow depth of field;

4. It is recommended to install close-ups;

5. Stroke has a great influence in the natural environment, so we should pay attention to eliminating its influence on shooting;

6. A stable tripod is a must;

7. Cloudy but bright weather is especially suitable for macro photography [1]

Common way

Macro photography is a special photography mode different from conventional photography. Macro photography is a close shot of related objects, which can get a larger image than the original object, and the magnification is above 1. Common ways are:

macro photography

1. Use a macro lens.

2. Use the reverse connection method

Use docking mode

Step 4 use a writing ring

Use snake belly

Buy a lens with macro function, and its macro is not expressed by the nearest shooting distance, but by the magnification, such as 1∶4. Macro lens is commonly known as "macro lens", but macro lens is not necessarily shot at "micro" close range. Some zoom lenses set macro files at the telephoto end (or short focal end), while others can shoot macro at all focal segments. The correct name should be "Pang Jing", and "micro" means tiny. For example, "microscope" means microscope.

Close-range photography is a science with irresistible charm. Macro photography can be achieved in the following ways:

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Macro photo album

1) adopts a special macro lens, which is expensive but the imaging quality can be guaranteed.

2) Macro gear zoom lens is a popular way, which is convenient and flexible to use. Most amateurs use this method. However, the images taken by the telephoto end and the short telephoto end of the zoom lens are different.

3) Using the connecting ring, the image distance is changed by increasing the length of the lens barrel to achieve the purpose of magnification. According to the principle of convex lens imaging, when the image distance is increased to twice the focal length, the image is the same size as the real object. Because the connecting ring is placed behind the lens, it is not flexible enough and affects the exposure. This method is often used to reproduce1:1slides.

4) The same principle as the joint ring is to use a retractable close-up skin cavity, which is more flexible and extensible than the joint ring with a fixed length, and can be photographed with an image ratio of 10: 1. This can make good works, especially when shooting flowers or insects. 5) The cheapest way is to use the "close-up lens", screw the screws in front of the lens, and achieve the purpose of macro photography by shortening the shooting distance. Because of the addition of Dan Toujing, the original lens combination has been changed, which will cause spherical aberration and distortion.