MACRO PHOTOGRAPHY

Macro photography (or photo macrography or macrography, and sometimes macrophotography) is extreme close-up photography, usually of very small subjects, in which the size of the subject in the photograph is greater than life size though macrophotography technically refers to the art of making very large photographs.By some definitions, a macro photograph is one in which the size of the subject on the negative or image sensor is life size or greater. However in other uses it refers to a finished photograph of a subject at greater than life size.

The ratio of the subject size on the film plane (or sensor plane) to the actual subject size is known as the reproduction ratio. Likewise, a macro lens is classically a lens capable of reproduction ratios greater than 1:1, although it often refers to any lens with a large reproduction ratio, despite rarely exceeding 1:1.

Outside of technical photography and film-based processes, where the size of the image on the negative or image sensor is the subject of discussion, the finished print or on-screen image more commonly lends a photograph its macro status. For example, when producing a 6×4 inch (15×10 cm) print using135 format film or sensor, a life-size result is possible with a lens having only a 1:4 reproduction ratio.

Reproduction ratios much greater than 1:1 are considered to be photomicrography, often achieved with digital microscope (photomicrography should not be confused with microphotography, the art of making very small photographs, such as for microforms).

Macro lenses of different focal lengths find different uses:-

• Continuously-variable focal length – suitable for virtually all macro subjects.
• 45–65 mm – product photography, small objects that can be approached closely without causing undesirable influence, and scenes requiring natural background perspective.
• 90–105 mm – insects, flowers, and small objects from a comfortable distance.
• 150–200 mm – insects and other small animals where additional working distance is required.

here are some vids u can check out for this type of photography