• This lens is compatible with Canon EF mount cameras in both full frame and crop frame sensors. The focal length equivalent on crop frame sensors is 160mm.
• This lens is NOT compatible with2Xand1.4XCanon extenders.
• This lens does not natively connect to theCanon MT-24EX Macro Twin Ringlite Flashbut will connect to it when using that flash's included 67mm ring adapter.
• The IS system makes a rattling noise when holding the lens vertically, which is perfectly normal. The IS system elements have to move perpendicular to the light path so they move side-to-side freely as well as tilting to counter the effects of camera shake. When the lens is held vertically, the IS elements are actually sitting centered so when gently shaken they move side-to-side. When turned horizontally or when attached to a camera and powered up, the rattling stops as the IS is engaged so you do not have to worry about the rattling noise when composing your shot.
