Overview:

• A telephoto prime lens ideal for shooting distant subjects, portraiture and, with 1:1 life-size magnification, macro close-up photography.
• Ultrasonic autofocus motor, inner focus system and floating lens elements enable fast, smooth and silent AF action. The front of the lens does not rotate or extend when focusing.
• Focusing distance range can be selected with a switch on the lens barrel. By setting a suitable focusing distance range, actual autofocus time can be shortened. The focusing ranges are 1.6'' to infinity and 4.9' to infinity.
• Manual focus override allows for precise manual focusing even in auto focus mode. This is particularly effective when shooting macro.
• Features distance and depth-of-field scales on the lens barrel.
• A removable, rotatable tripod collar enables mounting the lens to a tripod in both horizontal and vertical orientations.
• Compatible with EF 1.4x II and EF 2x II Extenders.

Specifications:

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Specifications
Product Code	2539A014AA
Focal Length	180mm
Aperture	Maximum: f/3.5
	Minimum: f/32
Camera Mount Type	Canon EF
Format Compatibility	35mm Film / Full-Frame Digital Sensor
	Canon (APS-C)
Angle of View	13° 40'
Minimum Focus Distance	1.6' (48 cm)
Magnification	1x
Maximum Reproduction Ratio	1:1
Elements/Groups	14/12
Diaphragm Blades	8
Image Stabilization	No
Autofocus	Yes
Tripod Collar	Yes Removable - rotating
Filter Thread	Front:72 mm
Dimensions (DxL)	Approx. 3.25 x 7.35" (82.5 x 186.6 mm)
Weight	2.40 lb (1.09 kg)