Just a couple days ago I bought a used Canon Camera Lens from Kijiji. Considering that Lenses are typically not a cheap investment, I thought I would take some time to go through the "tests" and precautions I took before going ahead and buying a Used Canon Lens. When buying a Camera or Lens I normally go to www.buycanonlenses.com, then head over to Amazon and find new and used corresponding products that people have good things to say about.
1. Check the Optics
If a lens is solid in mint or near mind condition there should be no optical blemishes or marks. So the front and back elements shouldn't have any scratches and the internal elements are dust free, with not fungal growth or mold.
2. Check The Focus
Put the lens on your camera and check the accuracy and responsiveness of the lens in both single-shot and continuous AF modes. Finally, try out the manual focus ring. If it feels sloppy or grinds, then reject it.
3. Confirm Compatibility
Manufactures occasionally change the chi[s in their SLR s and lenses, so older canon lenses may not work on a new canon camera. Check online resources, such as www.kenrockwell.com first.
4. Fast Glass
When looking to by a used Canon Lens, look for older compatible manual focus versions. Lenses with wide maximum apertures - such as f/2.8 - are referred to as "fast" lenses, as they enable the use of faster shutter speeds at low ISO's They can be expensive to
5. Take Test Shots
Before buying the used Canon Camera lens you should always take test shots. Ideally you should test a lesn before you buy it to make sure everyhting works and that elements haven't been knocked out of line, which will result in unsharp pictues. If you buy online, test the lens as soon as it arrives.
6. Get A Guarantee
If you buy a second hand Canon Camera Lens from a dealer than it should always come with a money back guarantee. As a minimum you need it to cover 3 months, but get the guarantee in writing!
Conclusion
Well, there ya have it! My guide to buying A used Camera Lens. I can't stress enough how important it is to go through the steps to avoid throwing away $1000 or more on a Canon Lens. Like I said, a good place to start looking is on Amazon, or at Canon Camera Lens Reviews you can read up on Canon reviews.
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