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Finding the perfect zoom lens for one's specific needs is a challenge when contemplating how numerous kinds of lenses are available out there, but one only has to look at Nikon's selection - specifically the Nikon 17-55 lens - to find a leading victor in this field.
The zoom ratio is 3.2x with a range of aperture between f/2.8 and f/22. This lens has a minimum angle of view and a maximum angle of 79 degrees and utilizes the Nikon DX format only. The exceptionally Byzantine lens building comes to block lens flare and ghosting and consists of 14 elements in 10 groups. The lens comes with the conventional M and can focus in both automatic and manual modes /A function which allows for back and forth switching that is fast and simple.
Nikon's claims for the Nikon 17 -55 lens make affirmations on several different fronts. For starters, the extra-low dispersion glass components aid the lens building while also raising the resolution and contrast of the picture. The round diaphragm is promised to produce a more natural look in reference to the out of focus components in the image as well as the internal focusing mechanism is stated to produce the focusing process smoother. Finally, the Silent Wave Motor enhances the rate where the lens can focus and does so in a hushed manner while the three aspherical lens elements work to avoid image aberration.
Finally, let's review the benefits offered by using this Nikon zoom lens. Quick is a definite strong-suit of this lens; never will one miss a shot because of a slow internal focusing motor. Strong as a stone, this lens weighs about two pounds and is assembled with rugged materials while simultaneously staying quite ergonomic. The dynamics of the lens make it capable of capturing the instant even in low-light situations as well as the degree of aberration present in pictures is zilch.
When mid-level zooming is desired along with low-light, it handles the scenario like a champion. This lens is also not unable to perform splendidly in natural conditions where light could not be scarce and can do so without causing sun or flares -stars. Using a combination of accuracy, speed, sharpness and control, the Nikon 17-55 lens is the institution lens of picking and will make any owner quite satisfied.
I am a big fan of Canon lenses, some are cheap but offer great value compared to other brands and some offer great quality and evan better performance. This lens may be out of reach for the average photographer, but if you can, go for it. This lens has canon's mid-level build quality, a step above the type of lens you get free with your new camera, just below canon's highly respected pro line-up - it feels silky smooth and sturdy. It is above average optics for a mid level lens and a very useful focal length range. Most importantly, it is also a nice fast(wide apperture) lens.
If your not the photography geek I am and you wonder why pay so much for this lens when canon already has the 18-55mm f/3.5-5.6 at a drastically lower price, covering the same focal range, the answer is this: Quality, Brightness and Depth - this lens has all three of these in abbundance.
Having a lower "f" number means the apperture can be wider, this means more light can be allowed into the frame to make dark rooms brighter and background more blurred to draw focus to the subject. If you have ever wondered what is the x-factor that makes magazine photos look a cut above the rest - besdies the photographer - its the quality of the lens and the 'F-stop'
Optically this lens allows surprising little flare (glint from brght objects) and is quite good on the Chromatic Aboration front, with a slight blue fringing near the edges on my copy.
You do get a noticable vignetting effect (dark corners) when at wide open apperture at 17mm.
Focusing is very crisp as ussual with canon ring USM motor.
In one sentance, this is a great generaly zoom that ussually gives me a warm smile when I see the results.
The only downsides are:
55mm is sometimes limiting and I do find myself hovering around the extreme ends of the focal range where all lenses perform their worst.
EF-S - this is a lens that will only work with consumer cameras, so if you upgrade to a Pro 1D or 5D you can't use this lens.
The lens extends quite a lot when zoomed in which will always need to suck in are to fill the void when it enlarges, this has a repuation for allowing dust behind the glass which is a known issue for this lens but not one that should put anyone but the most adventurous user off.