The Canon EF-S 17-55 f/2.8 IS USM lens is one of the most high quality lenses available in the standard zoom range. The Canon EF-S 17-55 f/2.8 IS USM lens was designed for the amateur/pro consumer using a digital body with the 1.6x crop factor.
The Canon EF-S 17-55 f/2.8 IS USM lens comes standard with a wide open aperture of f/2.8 which will enable the photographer to create a shallow depth of field as well as shoot in low light situations without too much trouble. The Canon EF-S 17-55 f/2.8 IS USM lens comes standard with a 7 blade aperture.
The Canon EF-S 17-55 f/2.8 IS USM lens also includes what is commonly termed “IS” or “Image Stabilizer”, which is a new technology Canon developed in the fairly recent past. Canon’s Image Stabilizer allows a photographer to take “hand-held” shots in almost any environment, well at least where you never thought you could take them before. The Image Stabilizer on the Canon EF-S 17-55 f/2.8 IS USM lens will allow you to shoot low light situations and produce a great in-focus image. You will have the ability to take a shot late in the evening at 1/8 sec. shutter speed to produce a clear image. Canon advertises the Image Stabilizer having the ability to take a handheld shot at 3 stops less than you standard “non-IS” lens would be able to do. The Canon EF-S 17-55 f/2.8 IS USM lens The Image Stabilizer in the Canon EF 28-300mm f/3.5-5.6L IS USM actually knows when a tripod is being used, because of the decrease in amount of vibrations, but it is not recommended to have the Image Stabilizer enabled while shooting on a tripod.. The image stabilizer mode can be used in either the AF (auto focus) or MF (manual focus) modes. The image stabilizer is a great addition to the f/2.8, but it will not allow you to capture motion the shutter speeds act the same as they would at any other time when it comes to movement. The Image Stabilizer function adds a great deal of value to the Canon EF-S 17-55 f/2.8 IS USM lens.
The Canon EF-S 17-55 f/2.8 IS USM lens comes standard with the powerful ring type USM (Ultrasonic Motor) drive which enables you to have lightning fast focusing, with a silent motor so you don’t scare away the wildlife. It also helps to be able to focus quickly and accurately when you don’t think conditions will permit.
The subject distance scale comes standard on the Canon EF-S 17-55 f/2.8 IS USM lens, which I wish was present on every Canon lens. This allows you to gauge (to a degree) how close you are to the subject you are shooting.
The Canon EF-S 17-55 f/2.8 IS USM lens is also equipped with full-time manual focusing, which allows you to focus manually even when the autofocus mode is turned on. You simply set the camera to ONE SHOT AF mode and then press the shutter button down halfway. While you have the shutter button down halfway you may turn the focus ring to focus manually. This function is not standard on all the Canon lenses, but it is a great addition because it helps to prevent the user from stripping his focus rings while trying to focus manually in the AF (autofocus) mode.
How does the Canon EF-S 17-55 f/2.8 IS USM lens compare to L-Series lenses. You will find out that the Canon EF-S 17-55 f/2.8 IS USM lens will either meet or beat the similar range L-Series zoom lenses. In many cases the image quality was better with this lens. It is extremely sharp, very fast and equipped with the image stabilizer function making the Canon EF-S 17-55 f/2.8 IS USM lens a force to be reckoned with. The Canon EF-S 17-55 f/2.8 IS USM lens is sharp, it’s nice and if you plan on shooting with a digital SLR with the crop factor this lens is absolutely worth the price. It is still a wonder among the photographic community as to why they did not make the Canon EF-S 17-55 f/2.8 IS USM lens an L-Series lens. The Canon EF-S 17-55 f/2.8 IS USM lens will meet and beat the standard zoom L-Series lenses. The Canon EF-S 17-55 f/2.8 IS USM lens is one of the best lenses available for the Canon bodies with the 1.6x crop. The Canon EF-S 17-55 f/2.8 IS USM lens is worth the price, because what you pay for in this case is most definitely what your get.
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