What does macro lens mean?

Question 1: What does a macro lens mean? It is a lens designed for close-range photography, which can take images with double or equal magnification. Due to special design and correction, its resolution is higher than that of ordinary lens. Because its lens barrel is longer than ordinary lens, it needs compensation when exposed. Its depth of field is short, so you should use a small aperture when shooting thick objects.

Question 2: What is a macro lens and how is it different from a normal lens? As the name implies, it is a close-up shot. Different from the ordinary lens, it can be shot at close range, thus achieving a large image of the object.

Question 3: What's the difference between ordinary fixed-focus lens and macro lens? Macro lens and ordinary lens have different lens structures. The biggest difference is the nearest focal length. The macro lens can reach the nearest focal length 1cm and the magnification 1: 1. The nearest focal length of an ordinary lens should be at least 20cm. The longer the focal length, the greater the focal length and the magnification can reach 1. Ordinary lens can realize macro function through the front end and close-up additional mirror, but it will lose image quality, and the depth of field is very shallow, so it is difficult to focus. You can also add a close-up ring, a close-up skin, or a reverse lens connection to achieve macro, but they all have the disadvantages of not being able to focus automatically and having a small amount of light, and they are not as good as macro lenses.

I think the most cost-effective way is to add a close-up of your 24- 105. Don't buy one that costs tens of dollars, the effect is too bad. You can buy that kind of dual-lens anti-dispersion close-up lens, such as Canon 500D close-up lens (more expensive) and domestic close-up lens. The effect is still good, which can greatly shorten the focusing distance and can also focus automatically. Close-up shot is that the longer the focal length, the better the effect, so a 50mm head is not acceptable.

Question 4: Does the macro lens mean 1: 1 or 1: 4? This refers to the maximum magnification of the lens, 1: 1 times, 1:4 times.

Question 5: What is the specific difference between macro lens and fixed focus lens? Macro lens:

It is a special photographic lens, which can be used for macro or close-up photography without installing close-up accessories such as close-up lens, close-up ring and close-up track leather cavity. It is a special photographic lens, which is used to shoot tiny objects or re-create small pictures. The resolution of this lens is quite high, the distortion aberration is quite small, and the contrast is high, and the color reproduction is very real.

Fixed focus lens:

The focal length is fixed, and a lens with the same focal length is called a fixed-focus lens, which cannot bring the scene closer or farther. The advantages of fixed focus compared with zoom are better imaging quality and easier aperture enlargement. The disadvantage is that you can't zoom, and you can only compose the picture by the photographer's action. For example, the commonly used 50mm lens is a fixed focus lens.

Focal length refers to the position where parallel light illuminates the lens and focuses on the image. For the lens with Dan Toujing structure, it is a fixed focus lens.

Question 6: What is the focal length of the macro lens? Macro photography is one of the specialties of digital cameras. With macro photography, ordinary scenes can also be made into dramatic scenes. Macro photography is especially good at expressing tiny things such as flowers, birds, fish and insects, and can fully show details. It can also express its creativity at will in topic selection, composition and lighting, unlike taking pictures of scenery, people and folk culture, which are subject to many conditions. Macros are quick to get started, although they are mostly sketches, but they often contain the good intentions of many authors, and they can also be called fine works.

The purpose of macro photography is to show the details of the subject and the subtle parts completely. In macro photography, there is a term that must be recognized, and it is Magnificatlon. Because macro photography is actually like magnification photography, the magnification directly affects the effect of macro photography. Because the magnification is defined by the ratio of the image obtained from the film surface to the size of the object, the magnification is expressed as the ratio. For this reason, magnification is also called "image ratio".

It is often heard that the lens can take macro effects of 1: 1 and 1: 2, and these ratios refer to the magnification of the lens. The value on the left represents the size of the image on the film plane, while the value on the right represents the size of the actual object. When the lens can reach the magnification of 1: 1, the lens can completely project the real size of the object onto the film plane. Let's give a simple example: the area of 135 film is 24 mm x 36 mm. If we use a lens that can completely record the subject with the same area of 24 mm x 36 mm on 135 film, the magnification of this lens is 1: 1. We should remember that the larger the number on the left, the higher the magnification. If the value on the right is greater than the value on the left, the magnification will be smaller.

At present, the macro function of consumer digital cameras is different, some are 10 cm-20 cm, and some can reach 1 cm-2 cm.

For SLR digital cameras, the macro shooting ability is determined by the lens. Now almost every lens has macro function, but the macro function they refer to actually refers to the close-up ability of the lens. Generally speaking, the magnification of a lens must reach 1: 2 or even 1: 1 to be called a macro lens. Macro lens is the easiest macro shooting equipment to use, and users can use it immediately without adding any accessories. Generally, the highest resolution and contrast of a lens are displayed when the focus is at infinity, while the macro lens is just the opposite, and its highest resolution and contrast are displayed when the focus is at close range. So if you want to take high-quality macro photos, you must choose a macro lens.

Question 7: Does the macro lens mean 1: 1 or 1:4? The maximum size of the image mapped on CMOS and the proportion of the object can be achieved through the lens. For example, the bee is 25mm long. If you shoot the bee with the nearest focal length of the lens, the bee is also 25mm on CMOS, which means it fills the whole picture. The photo you get is that the bee fills the whole image.

Question 8: What's the difference between macro lens and fixed focus lens? Macro is usually defined by magnification. When the distance between the object and the lens reaches the nearest focusing distance, the ratio of the size of the object on the sensor to the size of the object itself is the magnification. Generally speaking, only when the original lens reaches the magnification of 1: 2 will macro marks be marked on the lens, that is, macro marks. The magnification of the mainstream macro lens is 1: 1. The lens logo of the vice factory is 1: 4. For example, the pigments of Sigma and Longteng cannot be scaled at 0- 200 times, which has nothing to do with macro or not. Most macro lenses are also fixed focus lenses.

Question 9: What does macro lens mean? Can a macro lens only take macro photos? Macro lens is a kind of equipment specially used to shoot close objects. The lens is designed for shooting near objects, and it can clearly shoot the details of near objects, which is generally incomparable to other lenses. This lens can also shoot other distant objects, but the characteristics of the equipment can't be displayed, which is no different from those taken by general equipment, and it loses the macro characteristics.

Question 10: What does macro lens 1: 2 mean? Take Quan Huafu CMOS as an example, 1: 1, that is, a 3.6×2.4cm rectangular object covered with CMOS can be photographed at the maximum;

But 1: 2 won't work, and the magnification is only 0.5.