Canon EF 75-300mm f/4-5.6 III USM Telephoto Zoom Lens

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Not Nearly as Inferior
as Some Make it Out to be

Canon EF 75-300mm f/4-5.6 III USM Telephoto Zoom LensOverall, I'd say that you get what you pay for, this is a somewhat inexpensive telephoto lens, but it's not nearly as inferior as some make it out to be. Focusing is relatively slow at (f/5.6 at 300mm), and to reliably cut down on camera shake, you're going to need a 1/500 sec shutter speed, which means that at ISO 100, you only can lose one stop of illumination under "Sunny 16" conditions before you must decide on making some concessions to get your image. As a result, shots into the shade, or performed under the softer lighting conditions of the morning or evening will unsurprisingly compel you to find the middle ground of a high ISO grainy look or the bulk of a tripod to make up for this lens's lack of optical speed. If you always shoot in bright sunshine, you'll be all right.

Even though a tripod is a great tool, most people don't like to carry one, so the solutions are; accept grain in enlargements, not take certain photos, spend more money to go to a faster lens, or some combination of the above.  The least expensive substitute is to use a tripod, and I'd recommend the IS version if you have the extra money.

If you need a fast low light lens, this isn't it. If your primary objective is to take pictures in available light situations such as weddings and concerts, then get the 80-200mm f/2.8 or the 70-200mm f/2.8 IS instead.

The lightest 4x telephoto zoom lens in its class. Ideal for some sports, portraiture, animals, etc. The telephoto effect can make the picture look compressed or have excellent background blur. At the 300mm focal length, you can fill the frame with a postcard from 4.9' away. The Micro-USM autofocus motor is quick, compact and quiet.

This compact and lightweight Canon EF 75-300mm f/4-5.6 III USM telephoto zoom lens is ideal for shooting slower sports, portraits, and wildlife. ✓


The lens is distinguished by a newly developed micro ultra-sonic monitor (USM) that makes autofocusing quicker and quieter, along with an improved zoom mechanism that includes a silver ring on the front for a luxurious touch. The micro USM makes this version of the lens particularly suitable for applications that require a fast autofocus, such as sporting events or wildlife shoots. Best of all, the USM version shares many of the same features that makes the non-USM lens so popular, such as a compact size, a close focusing range, and accessory compatibility. As with all Canon lenses, this unit carries a one-year warranty. Focal length: 75-300mm maximum aperture: 1:4.5-5.6 Lens construction: 13 elements in 9 groups Diagonal angle of view: 32 degrees (at 11 feet) to 8 degrees (at 15 feet) Focus adjustment: Front group rotating extension system with USM Closest focusing distance: 4.9 feet Zoom system: Rotating type Filter size: 58mm Dimensions: 2.8 inches in diameter, 4.8 inches long Weight: 16.8 ounces

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Lens styleZoom lens  
Max Format Size 35mm FF  
Lens focal length75 300 mm  
Stabilization type No  
Camera mount Canon EF  
Angle of view 32-8  
Aperture (lens diaphragm)
Largest aperture opening F4.0 - F5.6  
Smallest aperture opening F32.0 - F45.0  
Includes aperture ring No  
Total diaphragm blades 7  
Total Elements 13  
Number of Groups 9  
Minimum focus distance 1.50 m (59.06")  
Maximum magnification ratio 0.25 x  
Autofocus type Yes  
Lens motor Micro-type ultrasonic  
Full time manual focus No  
Focusing method Extending front  
Lens distance scale No  
Depth of field scale No  
Physical features
Overall weight480 g (1.06 lb)  
Lens diameter 71 mm (2.80")  
Overall length 122 mm (4.80")  
Construction materials Plastic barrel, metal mount  
Sealing No  
Lens color Black  
Zooming method Rotary (extending)  
Power zoom No  
Zoom lock switch No  
Filter thread size 58 mm  
Lens hood code ET-60  
Tripod collar included No  
Optional accessories Soft Case LP1019


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