A detailed review of the Canon EF 70-300mm f/4-5.6 IS USM Lens. This is a very light weight lens, great for backpacking. I often use this lens for wildlife and flowers (on tall trees). So far no issues. Even though it is constructed out of plastic, this is one rugged lens. I have hit this on walls and other objects when it hangs on my neck, and it has been over a year and still working strong! The zoom is great, and I love the bokeh (make sure you watch the photo slideshow at the end).
If you are a beginner or intermediate photographer on a tight budget and want to start with wildlife photography, this is a definitely a must have for your kit. Remember that EF-S mount lenses are not compatible with full frame DSLRs! If you might upgrade, definitely go for a EF mount lens like this one!
Lens Specifications From Canon's Website:
Focal Length & Maximum Aperture: 70-300mm f/4-5.6
Lens Construction: 15 elements in 10 groups
Diagonal Angle of View: 34° - 8° 15' (with full-frame camera)
Focus Adjustment: Front-focusing method with helicoid ring drive
Closest Focusing Distance: 4.9 ft./1.5m
Zoom System: 6-group helical zoom (rotational angle: 84°)
Filter Size: 58mm
Max. Diameter x Length, Weight: 3.0 in. x 5.6 in., 22.2 oz. / 76.5mm x 142.8mm, 630g (lens only)