Marketing our Egyptian Arabian horses depends first on eye catching photography. So I need moving & posing shots. I was greatly impressed with the extreme fast focus & rapid shots I got. (Horses never stand still for very long.) I didn't know my Canon 20D could fire shots this fast!

Consistent Output; Fast / accurate auto-focus; Lightweight; Rugged

This product is simply amazing..It has a huge difference compare to EF 70-300 and im not talking about the EF 75-300. It gives you a high image quality especially sharpness and versatility. The structure is stunning and I would recommend this to everyone. Source: From experience.

Great for shooting my son's flag football games!

Awesome Low Light Lens; Consistent Output; Fast / accurate auto-focus; Strong Construction

Pros: Strong Construction, Nice Bokeh, Fast / accurate auto-focus, Durable, Lightweight Cons: Other thoughts: On time with overnight delivery and the IQ is amazing. Thank you guys.

I am very pleased with this lens.I'm not a professional, just someone who enjoys taking photos and using Photoshop Elements/Premiere to do some creative things for digital photo albums, etc.

Fair Pricequality Lens

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I purchased this lens for my 700D after reading multiple reviews and researching various lenses. This is my first L lens and I am very pleased with the pictures and the way the lens handles.

Fast auto-focus; Great Value; Lightweight; Superior build quality; Super-sharp images

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I have been using DLSRs for quite some time and moved to full-frame camera a while ago. Having used many lenses from every stable including Canon, Nikon, Sigma, Tamron, Tokina & Samyang and almost every focal length (right from 10mm to 400 mm), I must say this lens is easily one of the best...

Consistent Output; Durable; Fast / accurate auto-focus; Lightweight; Strong Construction

The Canon telephoto delivers fabulous image quality through its zoom range, along with the some of the best lab scores for sharpness for a lens of this type.

Sharpness across the zoom range; weather sealing; autofocus speed

Good but not great for chromatic aberration

Great for any photographer looking for an amazing telephoto lens at an affordable price.

It's simply amazing

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I purchased this lens 6 months ago. I used it seriously last week for our Ganddaughters prom pics & WOW they were almost 3D. The colours/ sharpness are absolutely superb. the lens clips & sits onto my D70 nicely. Shooting hand held f4 on a cloudy day was not a problem at all.