It also allows you to achieve much nicer looking bokeh when blurring out your background, whereas a lens with less blades will often produce harsher, more polygonal bokeh. A smaller aperture reduces the amount of light reaching the sensor. This is important in bright conditions where a wider aperture could result in your image being overexposed. Another advantage is that with a smaller aperture you get a greater depth of field, and can keep all of the image in focus.
Focus 1. This is the closest distance that the lens can focus. A shorter minimum focus distance allows you to get closer to your subject, and is particularly important when doing macro photography. Lenses with built-in focus motor focus faster and more quietly than lenses without a focus motor which rely on the camera's body focus motor.
Many lenses allow you to focus to infinity. This is essential when you wish to take photos including far off objects, such as when shooting landscapes, in order to make sure everything is sharp and in focus. With full-time manual focus, you can move the focus ring whilst it is in AF autofocus mode. This means that you can make manual adjustments once the AF has finished, without changing to manual mode.
Lenses with a built-in focus motor can autofocus even if the camera does not have its own focus motor. Which are the best Canon camera lenses? Alexandria Huff says:. February 21, at am. Edouard Becker says:. March 5, at pm. Osvaldo Verduzco says:. January 5, at pm. Michael Gomez says:. January 23, at pm.
Elizabeth says:. January 19, at am. October 24, at am. Art Douglas says:. August 8, at am. Ch Chand Tanha says:. August 11, at am. Kymberly Cortigiano says:. August 12, at pm. Rachel says:.
August 6, at pm. David B says:. August 5, at am. Julie says:. August 6, at am. August 4, at pm. December 22, at am. Pierre says:. December 22, at pm. Pierre Robert says:. July 17, at pm. Deirdre says:. July 15, at am. Neal F Rattican says:. July 14, at pm. Harold jones says:. January 23, at am. Bill McMillan says:. July 13, at pm.
GKWilkins says:. July 9, at pm. Leave a Reply Cancel reply Your email address will not be published. A good telephoto lens can help you take your photograph Understanding Video Resolutions SD.
Full HD. An 85mm lens offers the same framing from farther back. Some photographers prefer to get up-close and personal when shooting portraits, in which case a 50mm lens is the better option.
Others prefer to keep the subject at a distance, and here, an 85mm lens will excel. Really, it all depends on your level of comfort and your style of shooting. The wider, 50mm focal length lets you easily achieve environmental portraits that include interesting background features. Sure, you can get the same effect with an 85mm lens, but you have to back up farther, which as I discuss below! If you do a lot of headshots , 85mm is probably the better choice.
You can capture beautiful, tight images from a reasonable distance, whereas headshots at 50mm can put you uncomfortably close. In other words, with identical framing, depth of field on a 50mm lens and an 85mm lens is equivalent. So in a sense, an 85mm lens offers a shallower depth of field than a 50mm lens. Of course, everyone has a different preference when it comes to depth of field. Some prefer the more uniform background blur that the 85mm lens offers, while other photographers prefer to have a little more background definition.
You may even find that you prefer different approaches in different situations! For example, I usually favor the more uniform bokeh of the 85mm lens. If you find that you are always drawn to a creamier background, then the 85mm lens may be a better fit for you.
If you prefer a bit more texture in the background, you may want to consider the 50mm lens instead. What do you see? You may notice that the background in the 85mm photo is far blurrier than the background in the 50mm photo. The cherry blossoms are fairly well blurred in both images, but the shape of the blossoms is more defined in the 50mm image, and the blossoms are significantly more blurred and creamy in the 85mm image.
Part of it has to do with the framing; note that the girls are smaller in the 50mm photo compared to the 85mm photo, which leads to a slightly larger depth of field. But it also has to do with background compression. Wider focal length lenses, on the other hand, reduce compression, allowing more of the background to shine.
Do you know why? Because it was shot at 50mm! The second image, shot at 85mm, experiences more background compression, and therefore shows less of the background. In the previous section, I discussed background blur and shallow depth of field effects. There are two types of lenses-prime and zoom.
Prime lenses have a fixed focal length and zoom lenses have variable focal lengths. Prime lenses tend to be more compact and lightweight than zoom lenses. This is an advantage when shooting in low light conditions as it will increase the possibility of hand holding the camera and freezing the subject without shake or blur caused by the longer exposures.
Photographing using prime lenses with large apertures also means you can get a shallow depth of field which is useful for portraiture where you might want a softer or blurred background also known as bokeh. Wide angle lenses are popular lenses for landscape photography , interiors, large group photos and when working in confined situations. Standard lenses are popular as they are closest to the angle of view we humans see. These lenses have minimal distortion, which can be flattering to the subject.
They tend to use large apertures and allow a lot of light to enter the lens which makes them fast in low light conditions. Standard lenses are the popular choice for a wide range of photography including portraiture, nature and low light situations where the photographer can not use a flash or is looking to capture the scene with available light.
Telephoto lenses between 70 — mm are very popular lenses for portraiture and product photography as well as nature and wildlife imagery.
0コメント