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CMS-XML EF lens warranty information.
CMS-XML Information on the EF II extension tubes.
CMS-XML How to locate the serial number on the lens
CMS-XML EF200mm f/1.8L USM : How to use the Focus Preset Function.
CMS-XML EF200mm f/2.8L USM Specifications
CMS-XML How to use the Depth of Field Scale
CMS-XML How to use the Infrared Index.