Canon Macro Lens 60mm

What purpose do I get for my digital SLR?

One of the greatest advantages of digital SLR (or semi-professional and Professional) is the ability to use different objectives. However, the purchase decision and what the objective lens is adapted to a specific type of photography is a bit difficult. In this article we learned about the advantages and the main purpose of the use of certain types of lenses, with the hope that we will make it easier for you to decide.

Consider the different types of lenses and learn when they are used.

PREMIUM GLASSES and tele-a fixed focal lens is called Main. This is contrary to zoom lenses with different focal length. As the focal length is fixed to compose a picture that will be necessary to adjust the distance from the scene of objects or persons in the photo. In the zoom, you will use the zoom to compose the image instead of changing the distance from the camera to the scene.

Prime lenses are easier to build that zooms and can be designed to have a much better performance, sharpness and quality than zooms. Zoom lenses typically show different types of errors at different focal lengths, while the premium lenses have the lowest amount of such mistakes. Prime lenses are very compact and much smaller than zooms. Its price is cheaper than zoom lenses with a mesh equality. You can buy a 50mm f/1.8 Canon or Nikon for about $ 100, while a zoom to the same aperture size could cost over $ 1000.

Open: aperture sizes larger (smaller f number), 1.4, 1.8 and F / 2 give new light to the camera sensors and lenses are therefore faster (photo can be taken at a time of faster shutter). However, zoom lenses with a greater openness can be extremely expensive. F-number is calculated by dividing the focal length and aperture diameter. For example, if the size of the opening (window aperture for example) of the 50mm lens set to the number f 6.25mm is 50mm/6.25mm = 8, that this openness with the size, the target is set at f / 8.

Normal Prime Objective: A primary objective (ie with a fixed focal point) with a lens of 50mm focal length is called a normal. The Photos taken with a 50mm lens seem similar to what our eyes see in the scene (perspective, angles, etc..) Canon, Nikon and some brands of digital SLRs, as mentioned in the previous section, the disposable lenses to the normal size of an f / 1.8 or higher (like f/1.4) with a discount. Photos of 1.8 normal lens is adapted to relatively low light, bright and shiny.

Short Zoom Lens: Zoom lens covering the range 50-60mm may be considered in this category. Examples of these lenses are 35-70mm f/3.4-4.5 and 28-70mm f/3.5-4.5 lens. Today, some models from Canon and Nikon are offered with a price of 18-55mm f/3.5-4.5 lens. These lenses can be considered short zooms, while also covering a wide range of large and super.

Super zooms: These are the types that cover a wide super wide. Super zoom like a 18-200mm lens cover large angle and focal distance.

However, the most important feature of these lenses is the need to avoid changing lenses. These lenses can provide almost all the focal lengths you need and therefore sometimes called "walking through the lens." If convenience is not a problem for you, we recommend that you use more than one lens that has better performance in a variety of small focal length.

Focus and ultra wide angle lenses: The objectives of a focal length of 21mm to 35mm are normally called wide-angle lens. Lenses with a focal length less than 21 mm are called ultra wide angle. These lenses can be objective or modification of the first focal length (zoom lens). The first fisheye lens over have aperture sizes (in the range of 1.4 to f2.8) wide angle zoom lens (f/3.5-f/4.5 aperture sizes of Most of the time). Again, the zoom types to provide flexibility while Prime lenses provide sharper images, cheaper prices and a larger opening (ie, better pictures in low light). There are zoom lenses that cover wide ranges narrowly wide and super. This including 21-35mm, 18-28mm lens.

The wide angle of coverage is also one of the advantages of the range of lenses and super wide. An ultra-wide angle lens can sometimes take up to an angle of 90 degrees or more.

Ultra wide-angle lenses and typically have a range of distortion of perspective. Such a distortion causes an image to be photographed much closer to larger than distant objects. These lenses are suitable for taking photos indoors buildings, street photography and so on.

While most photograph indoors, an objective that covers focal lengths from 28 mm or less will be adapted. This type of lens can capture a considerable angle of a scene without the need for a great distance to the subject (s). However, if you shoot portraits and nature of a long-term useful. In these cases, a 35-135mm lens is very good.

Long telephoto: Lenses with a focal length of 135 mm or more are generally considered long telephoto. Tele lenses with different focal lengths are called telephoto zoom, while those with a fixed focal length lenses are called. You can easily find 55-200mm 55-250mm, 70-300mm zoom and telephoto lenses, As with most brands of digital SLR cameras. However, because of the wide range of lens design and complicated, with different lengths focal lenses may show various errors and quality. These lenses generally have underperformed the short zoom lens and fixed focus lens. A major objective of 200 mm telephoto lens is an example of non-telephoto zoom.

TV: Lenses with focal length 85-135mm range are sometimes called portrait lenses. It is because of perspective distortion is low and sufficient distance between the subject and the camera can be maintained. Many telephoto zoom can be used in this range, but are heavier, larger size and openness maximum is smaller than the lenses first. However, if you take lots of pictures, prefer the former as a medium telephoto lens with a length length of 85 mm and 105 mm between the size of the aperture of f / 2. Lentils The first error of the medium are less and as previously mentioned image quality is clearer and the size of the opening brighter and larger main goals are less expensive than the zooms with the size of the maximum aperture.

The Macro lenses: Macro lenses are designed to provide very high magnification and very short distances. In zoom normal minimum focusing distance (eg, the distance between the lens and the object) is generally greater than 30 cm. This distance is a few centimeters for macro lenses so you can take pictures from a shorter distance and have a crisp and very detailed with a very small object (like a small flower or a bee).

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