You can get much closer Works with both EF-S and EF lenses Auto focus still functions perfectly Takes up very little room in your camera bag Item looks about 3 times as large in photo using 17-40 Canon F/4 Lens
Cons:
A little tight to put on and take off of lens Can no longer focus very far away let alone infinity
Review:
I purchased this Extension tube so I could take better Macro photos without having to purchase an expensive Macro lens. I've got so many lenses already.
I installed the tube between my Canon Rebel XTi and Canon 17-40 F/4 L lens and bang!!! Instant macro lens.
A photo I had taken without the tube of a penny using the Canon 17-40 zoomed to 40mm gave a so so image. Putting the tube on allowed me to focus so close the penny filled almost the entire view finder. Looking at the penny image taken with the tube you can see little details I never noticed before like each and ever step and little details like the little FG on the lower right corner on the back of the penny.
5.0 out of 5 stars
Great Macro lens enhancer!!
Reviewed in the United States on November 17, 2008
Pros:
You can get much closer Works with both EF-S and EF lenses Auto focus still functions perfectly Takes up very little room in your camera bag Item looks about 3 times as large in photo using 17-40 Canon F/4 Lens
Cons:
A little tight to put on and take off of lens Can no longer focus very far away let alone infinity
Review:
I purchased this Extension tube so I could take better Macro photos without having to purchase an expensive Macro lens. I've got so many lenses already.
I installed the tube between my Canon Rebel XTi and Canon 17-40 F/4 L lens and bang!!! Instant macro lens.
A photo I had taken without the tube of a penny using the Canon 17-40 zoomed to 40mm gave a so so image. Putting the tube on allowed me to focus so close the penny filled almost the entire view finder. Looking at the penny image taken with the tube you can see little details I never noticed before like each and ever step and little details like the little FG on the lower right corner on the back of the penny.