Canon EF 25 II Extension Tube for EOS Digital Cameras
Product Features:
Retains all metering and AF functions with most CANON EF lenses
High level water and dust resistance — suitable for use in heavy rain
O-ring seals protect mounts and release lever
Technical Details:
Model: 9199A001
Item Package Quantity: 1
Device Type: Extension Tube
Item Display Diameter: 2.6 inches
Specific Uses For Product: Camera
Customer feedback:
1. You can focus closer than without it, but you lose the ability to focus all the way to infinity. AF and TTL work just as good as without this between the lens and body. If you are interested in macro work you may want to look at the 60mm or 100mm macro lens before buying this since they allow 1:1 reproduction without any special attachments.
2. For a circle with a hole in it, this is well worth the money. Of course, you pay for the sturdiness of the piece, since poor build quality could definitely reduce the quality of your pictures. Don’t be mislead by the description on Amazon, however. The site implies that this adds 25mm to your lens and that is it, whereas this will “macro-fy” your lenses. With this tube, my 28mm focuses from about 1-1.1″ from the front of the lense, with a depth of field of a fraction of a mm at f/1.8. It’s also strong enough to support my 200mm f/2.8L + 1.4x II, which is almost more than I can say for myself. My favorite use is in between my 85mm f/1.8 and 1.4x. I got stuck with a mark I, but I don’t plan to use EF-S lenses anyway.
