Telephoto Zoom Lens

This is a brief summary on how to understand your camera so that way you don't have to always use the auto mode on your SLR camera.

Tamron A011C-700 SP 150-600mm F/5-6.3 Di VC USD Zoom Lens for Canon EF CamerasVC (Vibration Compensation) , Angle of View diagonal 16゜25' - 4゜8' for full-frame format 10゜38' - 2゜40' for APS-C formatMinimum Focus Distance of 2.7m (106.3in), Focal Length : 150-600mmUSD (Ultrasonic Silent Drive), New eBAND (Extended Bandwidth & Angular-Dependency) CoatingMoisture-resistant constructionAdvanced Optical Technology.Max. Magnification Ratio:1:5

Telephoto Zoom

Author: CANONBrand: CanonColor: BlackFeatures: High magnification, compact and lightweight EF-S telephoto zoom lens with Image Stabilization for up to 3.5 equivalent stops of shake correction. Based on CIPA (Camera & Imaging Products Association) standards. Testing performed using EOS 7D at focal length of 250mm (400mm in 35mm equivalence). One UD lens element reduces chromatic aberration throughout the zoom range, for excellent image quality with high resolution and contrast. New six-group zoom system provides a compact design while achieving a maximum magnification of 0.29x at the telephoto end. Minimum focusing distance: 2.79 ft./0.85 m (full zoom range). Kit Inlcudes lens, lens cap E-58II, lens dust cap E, instruction book, warranty card Binding: ElectronicsRelease Date: 30-10-2013Details: EF-S55-250mm f/4-5.6 IS STM For photographers and videographers looking to add versatility and range to their lens collection, the new EF-S 55–250mm f/4–5.6 IS STM telephoto zoom lens is a dream come true. Compact and lightweight with Optical Image Stabilizer for up to 3.5* equivalent stops of shake correction, it extends the camera's reach significantly, capturing sharp images of far away objects, even when handheld. It features Canon's amazing STM stepping motor and a newly designed high-speed CPU, rear focus mechanism and improved AF algorithm for high-speed performance, supporting Canon's Movie Servo AF for smooth, quiet and continuous focus adjustments. The EF-S 55–250mm f/4–5.6 IS STM lens features one UD lens element that reduces chromatic aberration, helping to achieve excellent image quality with high resolution and contrast. The front element does not rotate, ensuring easy compatibility with accessories like polarizing filters, and full-time manual focus is available even while in AF mode. Enhanced coatings on the lens elements deliver excellent color balance and minimize ghosting and flare, and a 7-blade circular aperture delivers beautiful, soft backgrounds. The EF-S 55–250mm f/4–5.6 IS STM lens has a compact design thanks to a new six-group zoom system that provides a maximum magnification of 0.29x at the telephoto end and a minimum focusing distance of 2.79 ft./0.85m throughout the zoom range. * Based on CIPA (Camera & Imaging Products Association) standards. Testing performed using the EOS 7D digital SLR camera at a focal length of 250mm (400mm in 35mm equivalence). Specifications Focal Length & Maximum Aperture: 55–250mm 1:4–5.6 Lens Construction: 15 elements in 12 groups Diagonal Angle of View: 27°50' – 6°15' Focus Adjustment: Rear focus system Closest Focusing Distance: 2.79 ft. / 0.85m Filter Size: 58mm diameter Max Diameter x Length, Weight: 2.8 x 4.4 inches, approx. 13.2 oz./70.0 x 111.2mm, approx. 375g Sample Image MTF ChartsPackage Dimensions: 6.9 x 4.4 x 4.3 inchesLanguages: English

Ask David: Why does aperture decrease when zoom increases?

Brand: CanonFeatures: Impressive focal range Travel friendly size, packs small and stays small with a manual lock switch on side of barrel. Note: lens can only be locked at 70mm range as it is for travel only. Focus Adjustment Type -lens extension via inner focusing focus cam, plus floating mechanism. Note that when th

75300mm Telephoto Zoom Lens With F456 Maximum Aperture For Canon Slr Camerasimproved Mechanism Makes Zooming Smoother Front Part Of Zoom Ring Sports Silver Ringmeasures 28 Inches In Diameter And 48 Inches Long Weighs 168 Ounces 1year Warranty49foot Closest Focusing Distance 32 To 8degree Diagonal Angle Of Viewincludes Radioelectronics Usa Micro Fiber Cleaning Cloth Capture The Faroff Action Of Fastpaced Sports Or Zoom In For An Intimate Portrait With The Canon Ef 75300mm Telephoto Zoom Lens The Optical System Construction And Exterior Are The Same As The Ef 75300 Mm F456 Iii Usms The Difference Is That It Uses A Dc Motor Instead Of A Usm To Drive The Af As With All Canon Lens This 75300 Model Carries A Oneyear Warranty Focal Length 75300mm Maximum Aperture 1456 Lens Construction 13 Elements In 9 Groups Diagonal Angle Of View 32 At 11 Feet To 8 Degrees At 15 Feet Closest Focusing Distance 49 Feet Zoom System Rotating Type Filter Size 58mm Dimensions 28 Inches In Diameter 48 Inches Long Weight 168 Ounces The Most Affordable Of Canonis Long Telephoto Zooms This Lens Is Excellent For Subjects From Portraits To Wildlife And Nature It Shares The Same 13element Optical System As The 75300mm Usm Lens But Uses A Dc Motor For Autofocus Closefocusing Down To 49 Feet 15m Allows Filling The Frame At 300mm With A Subject The Size Of A Dollar Bill And Itis Compatible With The Canon 58mm Closeup Lens 500d For Even More Spectacular Shots Of Small Objects Isolate The Interesting Part The Eye Tends To See The Whole Rather Than The Individual Parts It Also Sees Whatis Near And Not Whatis Far By Bringing Attention To Those Things Missed By The Eye You Can Create Many Interesting Pictures It Could Be The Grimace Of An Athlete The Grill Of A Classic Car Or A Girl Against A Blurred Background Telephoto Lenses Can Also Compress Images To Give Dramatic Effects You Are Limited Only By Your Imagination

Sigma 150-600mm f/5-6.3 Sports DG OS HSM Telephoto Zoom Lens: Capture detailed photos of distant subjects with this lens's telephoto zoom and hypersonic motor for fast autofocusing. The water- and oil-repellent coating enables use in a range of conditions.

Review of Canon EF 70-200mm F2.8L IS II USM