Today, the process of photographing great different from previous times. Diverse arsenal of digital photography makes it possible to satisfy any desire.
Content:
- properties
- Standard lenses for canon
- Wide-angle lenses for canon
- Lenses for canon fisheye
- Fixed lenses for canon
- Portrait lenses for canon
- canon lenses for macro photography
- Lenses for canon with stabilizer
- Leica lenses for canon
properties
Modern SLR camera with interchangeable lenses offer a wide scope for creativity. Difficult to remain objective choice. This process is difficult for a beginner in photography business, and professional.
You first need to determine the purposes for which it is needed. To choose the right lens, you need to understand what they are, why and how to use them. Photographic equipment and Canon's Camera lenses - one of the most purchased. Consider the kinds of lenses for Canon.
Lens camera - it's his eyes that projects the image onto the plane.
The new camera worth standard lens, which is still referred to as "whale". Amateur Canon model equipped with camera lenses with variable focal length in the range of 18-55 mm, having a diaphragm 1 / 3.5 - 1 / 5.6.
These characteristics are quite versatile in order to receive custom images in any genre. A disadvantages of this "glass" just and prompt that you specifically lacking: colorful portraits or scenic views.
Even the novice amateur photographer sometimes lack the necessary review, sometimes unhappy with the quality pictures in low light conditions. All the subtleties of shooting depends on the main characteristics of the lens, which include:
- focal length;
- luminosity.
These parameters are routinely displayed on the rim of the camera lens. They determine the purpose of the lens, the manner in which it can be used.
Focal length
Focal length is measured from the center of the lens to its focus. It depends on the shooting place, shoot the photographer of the genre and vision. There are a number of subjective recommendations for the use of focal lengths, the knowledge of which is important for proper lens selection.
- 14 mm. The angle of view is wide, makes shooting indoors, in the car, the fore. Interior and portrait images can be distorted even at the expense of a small tilt of the camera.
- 24 mm. Angle too wide, you want to select, which should get the shot. Used for filming in the journey, indoors, portraits turn out problematic.
- 28 mm. Comfortable to shoot common scenes, the review, but not portraits.
- 35 mm. It is still wide-angle, but there is a balance between man and the environment, so getting a half-length portrait, group photo, photo in the studio interior.
- 50 mm. This genre focus. Used for filming scenes, action, landscape, half-length portrait.
- 70 mm. It is used for portrait subject and photo shoots.
- 85 mm. The ideal distance for shooting portraits, because allows to work with the model at a distance of 2-3 meters. Recommended to shoot outdoors and indoors, and to focus on the details.
- 135 mm. Angle requires a lot of space, so it is difficult to shoot in the room, it is required to move away from the object of 5-6 meters. Outdoors portrait shooting succeed, because it is better blurred background. From a long distance can be invisible to a stranger to make interesting pictures.
- 200 mm. Perform portraits at this distance, but more often shoot sports and wildlife.
aperture ratio
The higher the value, the better the camera lens. Aperture shows the strength of the opening aperture of the lens and is calculated as the ratio of the focal length to the diameter of the aperture. This f-number has an inverse relationship: the smaller it is, the more "lighter" lens.
The bright pattern characterized by f-number less than 2.8. To carry dark figure of more than 3.5. Blonde model surpass the size and weight of the dark, respectively, and the price is higher, sometimes much more.
Standard lenses for canon
Focal length in this model is 50 mm. It is also called "fifty dollars." Angle of this device is the same as when viewed around one eye, i.e. - exactly half.
Scientifically it sounds like: the focal length of the device is equal to the diagonal of the frame.
Such a ratio makes it possible to convey a realistic image without distortion, so these lenses are popular and in demand. They are easy to use and create a common household pictures of the required quality.
Wide-angle lenses for canon
Already in the model name indicates that the viewing angle is much wider than that of a standard device. So-called "Shirikov" have an angle of 50 to 90 degrees. A focal length have from 20 to 50 mm, so they are defined as a short-focus More device.
Coverage of the viewing angle makes it possible to fit in the frame a lot of space, so use them to produce a landscape photography, taking pictures of architectural complexes, residential interiors. They are less than other models sensitive to perturbations of the frame and have a high depth of field.
But to work with this model, you need skill, since the resulting picture may be distorted. These are linear or long-term changes or the image vignetting (darkening frame corners). Manifested these unpleasant moments can both skrivlonnymi lines along the edge of the frame and the dark edges of photos.
Vignetting is removed with the help of photo editing software. When shooting a wide-angle camera lenses have to put up with the heterogeneity of the image across the frame.
If the viewing angle exceeded 90 degrees, so called ultra-wide lens. This model allows you to shoot close to large objects and make expressive landscape sketches. Therefore, the use of such devaysa, for example, can only dream of in the portrait genre. The price of these devices bites, for beginner to photofission especially.
Canon Camera lenses in this class are more than 20 thousand. rub.
Extra wide models are divided into two groups:
- Direct lenses;
- fish eye.
The first gives an image with an acceptable tolerance of distortion, while the latter gives barrel distortion.
Lenses for canon fisheye
Extra wide models with a viewing angle of 180 degrees and a focal length of 15 mm are called "fish eye" or "fisheye". Two types of such devices: the angle of 180 degrees and frame diagonal of the frame 180 degrees vertically.
Overview turns out great, but there are optical distortions. The image obtained is as if the world looked through the glass ball. Hence the name. Pictures turn out convex or concave, Curved scenery, scary faces and other fun effects.
Incredible distortions resulting from different angles, appreciated by connoisseurs the world of photography. The model has a marking Fishey.
Fixed lenses for canon
As used lenses designs are distinguished:
- Fixed focal length lenses, called "Fix";
- varifocal, dubbed zoom lenses.
It is clear that the constant focal length does not change, so this device can not zoom in or out the image. It is necessary to do down.
Zuma in this respect is much more convenient. Standing on the site of the photographer has the ability to manage shooting a simple movement of the lens ring. Yet fixes, despite the inconvenience, do not hand over their positions on demand. Professionals-photographers prefer to have both types of machines.
The fact that the image quality of fixes is much higher than the price of similar cameras with varifocal lens. Do fixes a large aperture ratio and less distortion, they are simple in the device and, therefore, cheap. Fix indispensable for photographing static objects, such as paintings, the museum exhibits.
Not bad it works and when shooting at night, due to a good aperture pictures are of decent quality. And its simplicity and low cost makes it popular in the amateur environment.
Zuma's expensive, but a variable focal length allows you to use it where it can take several fixes. It easily builds a desired song, and is simply irreplaceable in dynamic shooting, for example, reports, operational events: weddings, sporting events, tourist voyages.
Photographs of close-up and executed them without any problems. Such photographic lens versatile and economical, one performs the functions of several cameras with a fixed focal length.
When comparing the zooms and fixes, zooms to the shortcomings include:
- worst image quality;
- lower reliability;
- a lower aperture ratio;
- the presence of distortions;
- reduction in the angle of view when approaching.
In order to limit light transmission zooms - diaphragm 2.8 in the bulk devices used limit aperture 3.5, whereas the diaphragm fixes produce 1.8 or less. Yet amateur SLRs equipped zoom models. When using the camera must take into account the crop factor.
Crop factor
Crop factor originated from the membrane at the transition to digital technology. Full frame camera is considered the standard of film of 35 mm, the transition to digital technology has replaced the photographic film image plate.
The matrix of the same size as the film was expensive, and manufacturers cut its size. Since the notion Kropa coefficient equal to the ratio diagonally truncated to full frame diagonal matrix. A stripped-down matrix became known as the crop matrix.
Today, many cameras with a full frame matrix where Kropa factor = 1, but if a crop matrix in the chamber, this leads to a kind of frame pruned.
In the photographing region of the lower falls. This means that the higher the crop factor, the less viewing angle. To properly determine the focal length in devices with kropnutyh matrix need the actual distance multiplied by the coefficient of Kropa.
Therefore, if the lens focal length = 50 mm at the supply chamber by a factor of 1.6, the lens becomes similar to 80 mm. Although mistakenly assume that the approximation is best to cameras with kropnutyh matrix. There is a reduction photographed area.
Kropnutyh camera with matrix at times cheaper full-frame. Camera lenses are divided into two types: cropped and full-frame camera. The former are used only for amateur art, the latter compatible with the professional and amateur models.
Full-frame devices are universal, but more expensive, so if your camera standing crop matrix, then it makes no sense to buy a full-frame camera.
Portrait lenses for canon
These craftsmen make excellent portraits and portrait compositions standard "fifty dollars." The quality reaches the highest brackets. But for professional work on the portrait is better to use a special portrait lens. The characteristic features of these lenses:
- high aperture (f-number <2.8);
- fixed focal length.
Wikipedia gives a definition of the portrait lens as the device belonging to the class of telephoto models but comprising a special construct that produces a soft image to the photo on the leveled defects skin. More often it fixes, but the use of zoom is permitted with a focal length that ensures the smallest optical distortion.
Classic portrait shooting distance is the distance of 70 -150 mm, and a classic portrait - a standard photo of man in the blurry background. To this end, the lens aperture should have a big hole. The smaller the aperture value, the blurred background.
To correct body proportions focal length can be short, for normal cells, it is from 70 to 135 mm, for cameras with a crop - 50-85 mm. Long-focus devices do not distort the proportions, gives a blurred background to focus on the subject.
Telephoto instance is good for remote shooting. The distance of 150 mm to perform the portrait makes move away from an object too far. A model with an even greater distance is called the telephoto. They are executed with a focal length of 200 300 mm or even 1000 mm. Use them to take pictures of objects and phenomena that are difficult to get close.
This is usually the natural world with its inhabitants live sports programming and that is fixed over time. In view of the specifics of design, these models offer impressive dimensions and size, respectively, and the price of them is high.
Ruler of portrait photographic lenses today are so vast that you can always choose the right model you specifically, which would correspond to the request, and by function, and price.
canon lenses for macro photography
Here, you first need to determine the purpose for which the lens is needed. Macro provides the ability to shoot very small objects from a short distance. If you need to remove the museum or jewelry, it is best to use a short-model, and for the removal of small particles of wildlife, insects and plants suitable telephoto lens.
Survey carried out on a scale of 1: 1 with the use of internal focusing system that provides carefully reproduce the finest contours. Macro lenses are marked, this indicates that you are using the minimum focusing distance.
Macro still using tilt-shift lenses, which can perform tilt and shift the image by changing the frame perspective.
Sometimes it is possible to do without a special lens. macro mode supports many standard lenses, which denotes the function "macro". In this case, you must set the maximum focal length and take pictures of an object, coming closer to him.
Lenses for canon with stabilizer
When working with a long focal length frame lubrication occurs danger. This may be the trembling of the hands or shaking of the photographer camera. Resolve this problem in three ways:
- use a special holder for photographing - a tripod;
- exhibit minimal exposure when shooting;
- use the camera lens with stabilizer.
The last action is very useful, but not always save the frame. And yet, a large number of lenses made with the stabilization function. Markings on such a model should include IS symbols. Roman two nearest IS means applying a second generation system stabilization.
Inclusion of a stabilizer in the lens constructive increases its value. Another disadvantage can be considered fast battery drain, as the stabilizer also consumes energy.
stabilization function is vital when shooting long-focus devices useful it is in low light conditions, as it helps to produce sharp pictures at long distances.
Photography, the lens with the stabilizer must not be afraid of vibrations and perturbations, the frame becomes stable. Stabilization function can be disabled.
Leica lenses for canon
Leica lens belongs to a class of lenses of previous years, which were issued to the legendary wartime camera "Leica". But until now, he has a lot of adherents. Currently, most modern cameras equipped with autofocus. The Canon models it is implemented by means of ultrasonic USM motor, which focuses speedily and silently.
Simple amateur photographer prefers autofocus, but a true master knows that fotoshedevr can only manual adjustment.
Old Masters appreciated the watering can for her "warm leechny light", which gave light scattering lens. Drawing a sharp image is obtained, and at the same time gentle. The model has excellent mechanics, which makes no backlash and unusual noises when rotating the focus ring.
It easily and smoothly, effortlessly, moves to the selected value. In spite of its compact size (small size of the lens), the device operates steadily over the entire range of aperture and focal length.
How to choose a lens
The types of lenses and their appointment may be useful to think about purchasing the device for their own purposes. So, to sum up.
- We determine the necessary resolution camera. Choosing by focal length (wide-angle, standard, long-focus).
- The magnitude of the front lens must be large, the glass quality is determined visually.
- Choosing a camera lens on the desired luminosity. High luminosity are expensive devices, but they are guaranteed to give the necessary sharpness and low distortion.
- Desired image quality is obtained if you buy a model with a stabilizer.
- Equally important is the sharpness camera. MTF characteristic indicates the contrast and sharpness. If MTF <30%, such a model can be purchased only when needed custom photo, size 10x15 mm. Below 30% is considered to be a lens blurred or "soap".
- Finally, be sure to pay attention to the bayonet - mount camera lens. Mount comes in firm performance, so it is necessary to search for objects in the model range, whose company your camera.
- Another necessary component - is waterproof and dustproof device. Models of standard series is not recommended in the rain and in the dusty space, as they are vulnerable to extreme environments. soaking camera lightning can lead him into disrepair. But Canon offers an elite series of lenses that can withstand bad weather. It is designated by the letter L and is designed for professional photography. Distinguishes such Photoobjectives red stripe on the rim model. The price of this equipment much more expensive amateur DSLR, but it is deservedly popular with professional photographers.
- Recently, there have lenses with a green stripe and markings DO. This new feature of the Canon: «DO» - this abbreviation means the use of multi-layered diffractive optical elements, which leads to weight loss and camera lens sizes, without degrading image quality and aberration.
Test the selected device, check the operation of the stabilizer, if present, check the accuracy of the framing and focusing, as well as mechanics. By the lens mechanics are all moveable parts and all the buttons, switches, thumbwheel.
It should work smoothly, without jamming and noise effects.
Should pay attention to the fact of how many sections are telescopic construction of a zoom lens. A model with three sections vulnerable moving camera lens with the two sliding elements. Check backlash.
When you can save on purchase equipment?
- the device needed for high-quality amateur shooting;
- it is optional to existing devices;
- model will be used for educational purposes.
But in general, low cost lens shows weak technical abilities of the model and does not guarantee its long use. Therefore, when buying photographic equipment is better not to limit itself in the media, then the result can be decent.