Talk about macro photography

· Talk about macro photography macro photography is different from the conventional photography of a special kind of photography, photographic is at close range shot on objects, and you can get a large magnification. On film formation and objects to the original large images, up to 1: 1 magnification. Of course, macro photography of magnification to not only reach the 1: 1, through the use of special equipment you can also talk about macro photography · macro photography is different from the conventional photography of a special kind of photography, photographic is at close range shot on objects, and you can get a large magnification. On film formation and objects to the original large images, up to 1: 1 magnification. Of course, macro photography of magnification to not only reach the 1: 1, through the use of special equipment can achieve greater magnification. Macro photography not only has its unique charm, and macro photography is also possible to scientific research, medical, etc. Macro photography is the equipment and general photography, first on camera with some restrictions. Only single lens reflex cameras, including 35 mm and 120 single lens reflex cameras and large format cameras are suitable for macro photography. Mainly because this type of camera, in the viewfinder camera no Parallax, can in the viewfinder to see all of the photo scenery. Paraxial viewfinder camera when shooting in the near distance, the greater the disparity in the viewfinder cannot be observed by all of the scenery, so not suitable for macro photography. Second General photographic lens shortest distance shots, and often do not meet the requirements of macro photography. Because General photographic shooting distance is in the tens of centimeters, or even close to a few centimetres. So in order to achieve the purpose of the photographic, but also the use of special equipment and methods. Realization of macro photography there are many kinds of methods, the most common is in general the lens front end, with close-up lenses. Close-up lens is made of optical glass manufacturing of convex lens films, often with different diopter, close-up lenses have 1, 2, 3, 4, number of hours, in case you need a different magnification. Usually the number of the close-up lenses, camera distance, the more recent. Different manufacturers have different numbers, according to the actual needs. Additional magnification and the lens focal length, the longer the focal length of the lens, the magnification is also bigger. Close-up lenses to choose and own the lens filter diameter same Edison to twist to your lens. Close-up lens is screwed onto the lens front end, equal to in the lens optical microscopy group before a lens, the merits of its quality directly affects the image quality is good or bad, the purchase must be attention. Some close-up lens is made of two pieces of Achromatic lenses, you can get better results. Close-up lens prices lower, generally can only be used in low magnification, aberration requirements are not too strict. In addition, using close-up lenses on your camera's auto exposure, auto-focus performance such as essentially have no effect. · Talk about macro photography now many 35 mm camera with zoom lens has a close-up function, but the magnification of not more than 1: 2, that is, the image on film will not exceed the original size of 1/2. The zoom lens at all focal lengths segments for close-up, called the whole macro; also has the zoom lens can only be used within a certain period focus on close-up capabilities, mostly in Zoom telephoto end. Because of the zoom lens is designed as a conventional lens, the General design of the lens is the object distance is dozens of times above the lens focal distance considerations; various aberration correction is also the starting point in the normal lens is not as strict as macro lens. So zoom lens for close-up, merely a kind of additional functionality. The actual filming, distortion and spherical aberration will have on the image quality. So the zoom lens in this close-up shooting functions in real time, such as flowers, do not be too large; but in the film plane, such as photographing photographs, information, and so on, this close-up function will appear. Currently available only Nikon has a macro zoom lens F4.5-5.6 AF70-180mm, this is a true macro lenses, maximum magnification of up to 1: 1.33. There is also a close-up accessories, this is the next circle close-up. Close-up received ring is installed in between the lens and body, equivalent to extend the lens like the margin and thus greater magnification. Close-up received ring attachment usually consists of several add-ring consists of several received circle have different lengths, for instance, 12 mm, 25 mm, etc., either alone or combined use. For example, a 50 mm lens, and 25 mm the circle, you can get the 1: 2 magnification; plus 50 mm the circle (or two only 25 mm-ring), you can get the 1: 1 magnification. Use close-up then ring, magnification is continuously changing. There is also a close-up skin Chamber, its role and then circle close-up, as required in between the lens and the body. Because close-up skin cavity expansion is controlled with a rack, skin cavity can be continuous expansion movement, the magnification is continuously adjustable. Use the close-up attachment, you can get more than 1: 1 magnification. But the camera's auto exposure, auto focus functions are subject to different degrees. AE also use specialized automatic jiehuan, and double shutter line. Close-up received ring price than close-up lenses, close-up skin cavity prices higher. However, use both of these attachments, you can get a better image quality. Close-up skin cavity can also be equipped with reverse picture photographing, dedicated to photographing reverse picture. In addition, there is also a close-up attachment — — lodging then ring, you can flip the camera lens, you can get around 1: 1 magnification. This was then shot method, you can only apply to standard lens, wide angle lens and part of the zoom lens.