Usm Lens
Tuesday, February 23rd, 2010
What is the difference, pros and cons to a zoom lens that uses a DC motor instead of a USM to drive the AF?
I am looking to buy a zoom lens for my Canon Rebel XT. I can't afford one with the IS. so my two choices are 75-300 mm ones but they have 2 different kinds. So i want help in choosing which would be the better choice.
UltraSonic Motor (USM) will be quieter and use less battery power.
g-day!
Canon EF 24-105mm f4 L IS USM Lens Review in English
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EF 28-200mm f3.5-5.6 USM Standard Zoom Lens *Compatible with all EOS cameras *Wide-angle/telephoto zoom lens provides maximum versatility *Highest optical performance in its class *Micro USM drive for silent, high-speed auto-focusing *72mm filter size *12-group, 16-element design *Focusing range: 1.5' to infinity *3 1/8" dia. x 3 1/2" L; weight: 17.6 oz... |
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Canon EF 50mm f1.4 USM Standard & Medium Telephoto Lens for Canon SLR Cameras $344.00 Canon offers this standard lens featuring superb quality and portability. Two high-refraction lens elements and new Gaussian optics eliminate astigmatism and suppress astigmatic difference. Crisp images with little flare are obtained even at the maximum aperture.... |
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Canon EOS 50D 15.1MP Digital SLR Camera with EF 28-135mm f/3.5-5.6 IS USM Standard Zoom Lens Canons new EOS 50D bridges the gap between the novice and the seasoned pro with a perfect combination of high-speed and quality. It features an APS-C sized 15.1-megapixel CMOS sensor for tremendous images, new DIGIC 4 Image Processor for fine detail and superior color reproduction, and improved ISO capabilities up to 12800 for uncompromised shooting even in the dimmest situations. It features a re... |
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Canon EF 85mm f/1.8 USM Medium Telephoto Lens for Canon SLR Cameras $364.99 This lens is a highly practical medium telephoto lens with superb delineation and portability. Images are sharp and clear at all apertures. Through computer simulations, the lens has been designed to give beautiful background blur. Since the front lens group does not rotate during focusing special filter effects are not affected.... |
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Tom Ford Sunglasses - Jennifer / Frame: Shiny Black/Gunmetal Lens: Grey Smoke $188.95 Tom Ford Sunglasses are known for their edgy and luxurious style. The Jennifer is an elegant rectangular plastic frame with sleek cut-away lenses and metal temple details. The Jennifer features a saddle nose bridge and adjustable wire core temples for superb comfort. The Tom Ford logo is etched on the left lens and inlaid on both temple tips. Tom Ford Sunglasses always provide 100% UV PROTECTION. ... |
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Run Dmc with Smoked Lens Sunglasses Glasses $12.99 ... |
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02-08 DODGE RAM 3rd LED Brake Lamp - Smoke Lens Red / Clear ... |
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05-Up CHRYSLER 300/300C Euro Smoke Side Marker Lamp Item Number: S-300C05U-SM / For: 05-07 Chrysler 300 / 300C / Color: Smoked lens / Condition: Brand New / Latest Style of design for you vehicle! / Make your car stand out on the road! / Exactly the same as pictured.... |
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04-Up SCION tC VRD Full LED 3rd Brake Light Red Lens (Plug & Play) Item Number: T3-TC04U-SM / For: O4-Up Scion tC / Color: Smoked Black OEM Style Lens / Style: VRD Full LED 3rd Brake Light (Plug & Play) Latest Style of design on Tail Lights for your Vehicle! / Make your Car Stand Out on The Road! / Exactly the same as pictured.... |
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Canon 2578A002Aa Ef 70200Mm Usm Lens $2,100.00 Focal Length & Maximum Aperture: 70200Mm 1:2.8; Lens Construction: 23 Elements In 18 Groups; Diagonal Angle Of View: 34°-12°; Focus Adjustment: Inner Focusing System With Usm; Filter Size: 77Mm; Closest Focusing Distance: 1.3M/4.3 Ft; Rotating Type Zoom System... |