EF 200-400mm f/4L IS USM lens
[ame="http://www.youtube.com/watch?v=xQp_0b2umto"]EF200-400mm f/4L IS USM Extender 1.4×"Deep inside" (CanonOfficial) - YouTube[/ame]
[ame="http://www.youtube.com/watch?v=xQp_0b2umto"]EF200-400mm f/4L IS USM Extender 1.4×"Deep inside" (CanonOfficial) - YouTube[/ame]
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