Cool video about Canon Lens, have a look:

Directions for canon 100mm macro LensSkins
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58mm +10 Close up Macro Lens for Canon XS T1i T2i T3 T3i 600D 1000D EF 50mm F1.4

US $15.99 (0 Bid) End Date: Sunday May-20-2012 10:20:09 PDT Bid now | Add to watch list

• Multicoated & Threaded
• All Glass - Designed For Video Or Photography- Great For Those Close-Up Shots Of Jewelery, Insects, Flowers, etc..
• Threaded To Accepts Lens Filters
• 1 Year Replacement Warranty

Close Up Macro Filter Lens For Canon EF 50mm f/1.8 II

Close Up Macro Filter Lens For Canon EF 50mm f/1.8 II

ES-71 II ES-71II Lens Hood for CANON EF 50mm f/1.4 USM

US $7.69 End Date: Sunday May-20-2012 4:23:31 PDT Buy It Now for only: US $7.69 Buy it now | Add to watch list

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Cool video about Canon Lens, have a look:

So I took a canon lens and placed it in reverse in front of my D3100 in movie mode, and checked out my Holga.
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Disclaimer: This site is a paid affiliate of eBay.com