This lens will find a happy home with photographers who need a reasonably good, fast focusing long zoom lens and aren’t too spoiled by the (obviously) superior optical qualities of fixed telephoto lenses.

User Image Samples

Romy’s Bird Photos
Romy was kind enough to share 100% crops from a couple of photos. I have to admit that the quality is surprisingly good, given that he coupled the lens to Sigma and Tamron 1.4x tele converters (not something usually done with zoom telephoto lenses having small apertures).
And the lens was wide-open too - excellent! Cameras used were the EOS 20D and Canon 1D Mark II.
If you’re a fan of avian photography, hop over to Romy’s galleries where you’ll be treated with amazing photographs of Philippine wild birds.

Romy’s Macros
Romy is back and now shows us that the 100-400mm can also double up as a closeup lens, and again, he treats us to some wonderful photography in this gallery that’s a mix of pics taken with Canon and Sigma lenses, and various EOS camera bodies.
My personal picks of EF 100-400mm samples from that gallery are: IMG9331, IMG9327, KZ2L9240 and EUREMA Butterfly.
Note that the lens is at 400mm for all the shots.

African Wildlife
Brian has three photo samples - a leopard at rest in Botswana, lion cubs and a cheetah taken in Tuli Block in Botswana.
Camera used is the Canon EOS 20D digital SLR.
The busy background in the photo of the lion cubs shows the bokeh qualities of this lens - and it’s something that’s not liked by a number of owners. You’ll need to judge for yourself if this is a major issue to you.

Birds in San Franciso Bay Area
Garrett Lau shot this with the 100-400 mounted on his Canon EOS 1D Mark III, and he remarks that he hasn’t had AF (auto focus) issues shooting bird-in-flight photos. He’s getting a higher success rate with the 1D3 compared to the 20D.
Species photographed are: Barn Swallow, Caspian Tern, Forster’s Tern, Snowy Egret.

Collected here are links to reviews, image samples and other related information.

User photos

AbBy’s Amazing Birds
Species and location: San Francisco Bay Area; Black-necked Stilt Fledgling at Radio Road, Redwood City, Fledgling Avocet, Dowitcher, Sparrow, Mallard Ducklings, Yellow Legs at Shoreline Lake, Mountainview, and a boring Willet (sic).
The photographer shot these with the 400mm f/5.6L mounted on the Canon EOS 30D digital SLR camera. This set is truly one of the best photos I’ve seen shot with this combination, and AbBy has more tips on approaching the juvenile birds. View more pics from AmyAbby’s gallery.

Ken’s Southern California Variety
Bird species include: a Great Blue Heron, Peregrine Falcon, Dowitcher, Juvenile Black-crowned Night Heron, Osprey (caught a fish), Acorn Woodpecker, Goldfinch and a California Towhee.
Camera used was the Canon EOS 1D Mark II N. This series is an excellent demonstration of the sharpness, contrast and bokeh qualities of the lens. You can view more of Ken’s photos here.

I really like Roy Krabben’s Rome gallery.

When I was there in 2000, I only had a Coolpix 4500, so didn’t get photos anywhere as good as his.

The photos in Roy’s gallery were shot with a Canon EOS 20D, and the thumbnails below represent the images in his gallery that were snapped with the Tokina 12-24mm f/4 AT-X 124 AF PRO DX lens.

Roy posted a link to his gallery in response to a question on whether an ultra-wide lens would come in handy while travelling in Rome.

For me, I guess the answer is a resounding yes.

I remember the many magnificent architectural structures in Rome, and how various opportunities to shoot interiors and exteriors abound.

Having a good ultra-wide angle lens like the Tokina 12-24mm f/4 AT-X 124 AF PRO DX, Sigma 12-24mm, Sigma 10-20mm DC or the Canon EF-S 10-22mm in your camera bag would be a very good idea indeed.

Remember that the DX designation of this lens means that it is optimized for use on Canon’s 1.6X APS-C crop digital SLR bodies.

Tokina 12-24mm Image Samples

• Canon EOS 20D and Tokina 12-24mm in Rome

The Sigma 10-20mm is an excellent alternative to the Canon 10-20mm EF-S lens, but what are the factors to consider when deciding which one to buy?

If you’ve ever wondered what good an ultra-wide angle lens would bring to your photography (besides landscapes), maybe travel photography in Rome might give you a few ideas.

Here’s a really nice gallery of Sigma 10-20 images, by Cristiano Secci.

New owners of this lens face a steep learning curve to get the best out of it … read a summary of discussions where users share their tips and experiences.

EF 500mm f/4L Image Samples

1. A variety of birds at the Chicago lakefront (species include Semipalmated Plover, Least Sandpiper, Sanderling, Juvenile Spotted Sandpiper, Spotted Sandpiper, American Crow, Northern Rough-winged Swallow juvenile and Barn Swallow juvenile)
   Additional equipment info: Canon EOS 20D and Canon Extender EF II (1.4x) Tele Converter Lens

Bear in mind that the 17-55mm, being an EF-S optic, can only be used on the newer 1.6x crop Canon digital SLR bodies such as the 20D / 20Da / 30D and the Digital Rebel series, including the Rebel XT and XTi models.

Questions have been raised about the build quality of the 17-55mm, since it’s not an L lens … read more about a related discussion.

A popular debate is also whether to purchase the EF 17-40mm or the 17-55mm given the overlap in zoom range.

Canon 17-55mm Image Samples

1. ISO3200 photo taken with a Canon 20D

This lens is also a favourite among portrait photographers. See an Asian portrait sample shot by Siew Khee Photography with this lens.

Canon EF-S 10-22 vs Sigma 10-20mm f/4-5.6 EX DC HSM - how do they compare and which one should you buy?

Ultra-wide angle lenses aren’t just for landscape photography … the next time you travel to Rome, you might want to consider bringing one along.

User sample images

Lens discussion at Clubsnap.org
This thread started with a question about comparing the EF-S 10-22mm against Sigma’s 10-20mm. The response overwhelmingly favors the Canon product, but what’s even more interesting are the links to image samples. I highly recommend you follow the links and view some great photography with the EF-S 10-22 lens.

Read about the debate on choosing between the Canon EF 17-40 lens vs Canon EF-S 17-55mm f/2.8 IS USM lens.

Miscellaneous tips

Is the zoom ring smooth when turned?
The replies to this post indicate that the zoom ring on the 17-40 should feel smooth throughout the zoom range. You’ll need to send it back to Canon service if this is not the case with your copy.