Now with an f/4.0 aperture, the 500mm f/4 IS
provides AF with any EOS body even when used with the EF 1.4x Extender.
Weather-resistant construction, excellent durability, superb AF speed and
optical quality combine with Canon's Image Stabilization for incredible
imaging potential.
Key Features
• Flourite & UD elements eliminate
secondary spectrum chromatic aberration
• Full-time manual focus override
• AF Stop function shuts off autofocus
when an obstruction appears
• Dust & moisture resistance made
exceptional by magnesium alloy lens barrel and new rear gasket at lens
mount
• Two-stage image stabilization;
dual-axis camera shake correction or vertical axis only(for panning)
• 3-stage focus limiter
• Focus preset function allows for
returning to a specifically set focus by turning a ring in front of the
focus ring
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