วันอาทิตย์ที่ 7 กุมภาพันธ์ พ.ศ. 2553

Canon EF 50mm f/1.8 II Camera Lens




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Canon EF 50mm F1.8 II lens: Highly Recommended by dpreview.com
Read the full Canon EF 50mm F1.8 II lens review at dpreview.com
The Canon EF 50mm F1.8 II may be one of the cheapest lenses currently on the market, but its optics belie its lowly price. As befits a classic standard prime lens, it's very sharp when stopped down (especially in the centre), shows minimal chromatic aberration, and has relatively low distortion; APS-C users will also benefit from extremely low vignetting. In most regards it comes very close indeed to its much more expensive bigger brother, the EF 50mm F1.4 USM, lagging marginally behind in corner sharpness at any specific aperture. The only real blight in imaging terms is the lens's bokeh, or rendition of out-of-focus backgrounds, which is anything but smooth with a distinct tendency to render bright highlights as obvious pentagons (it's a pity Canon didn't choose to use a diaphragm with 7 or 8 blades instead of 5).

Technical Details

  • 50mm standard lens with f/1.8 maximum aperture
  • Traditional Gauss-type optical design is extremely sharp
  • Focuses as close as 18 inches for extreme close-ups
  • Ideal for natural-looking shots; excellent color balance
  • Measures 2.7 inches in diameter; 1-year warranty

Product Description

Amazon.com Product Description

Amazon.com Product Description Lightweight and affordable, the Canon EF 50mm lens--which offers a fast f/1.8 aperture--is an excellent lens for people who prefer a fixed focal length. Canon's lightest EF lens at a mere 4.6 ounces, the lens boasts a traditional Gauss-type optical design that delivers a sharp performance even when wide open. As a result, the lens provides an image that's extremely close to how your eye perceives a subject, making it excellent for portraits and images that require a natural depth of field. In addition, the lens focuses as close as 18 inches, helping you take extreme close-ups. Finally, the lens offers an excellent color balance. As with all Canon lenses, the lens carries a one-year warranty.
  • Focal length: 50mm
  • Maximum aperture: 1:1.8
  • Lens construction: 6 elements in 5 groups
  • Diagonal angle of view: 46 degrees
  • Focus adjustment: Overall linear extension system with Micromotor
  • Closest focusing distance: 1.5 feet
  • Filter size: 52mm
  • Dimensions: 2.7 inches in diameter, 1.6 inches long
  • Weight: 4.6 ounces

325 of 327 people found the following review helpful:
5.0 out of 5 stars Sharp, fast, inexpensive, April 10, 2005
By Richard Aubin (Dallas, Texas USA) - See all my reviews
(REAL NAME)
Once upon a time the 50 mm lens was THE standard camera lens and was THE optical benchmark by which manufacturers were judged and compared. Although the basic lens focus has now shifted (at least at the low to mid amateur level) to zooms - you can still benefit from years of research and development that went into designing the 50 mm lens and this here lens may be the best lens, dollar for dollar, that you can ever buy. The question is can you afford not to own this lens?

Years of development have brought us a lens that has a fast aperture of 1.8 - far faster than any consumer zoom lens - and that is sharp as a filed tack. Be forewarned about the sharpness . . . if you are taking pictures of people, this lens is unyielding in its sharpness and may well surprise you and your subjects whose every blemish is captured. The lens has a fabulously shallow depth of field if you want to use the 1.8 aperture to blow out a background. This lens is also ridiculously inexpensive. It is not USM - so it is a little loud. It does not have a moving focus scale. For the money though - this is heaven.

As to the build quality - yes, it is plastic. No, it's not built like the Rock of Gibraltar. If you are going to give this lens extensive use as your everyday lens and you shoot a lot, it may not hold up all that well as one reviewer suggests. However, I've now had this lens and used it fairly regularly (although not as the primary lens) for about 8 years and it is still in great condition. In my mind, spend the $ on this first before you go and drop $330 on the 50mm 1.4 USM lens and I think you'll find it gets the job done nicely and that the extra $250 on the 1.4 may not be worth the difference in build (major difference), speed (minor difference) and image quality (minor difference).

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