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Canon EF 2X II Extender Telephoto Accessory:

Technical Details:

High level water and dust resistance equivalent to the EOS-1V and Super Tele L Series IS lens range -- suitable for use in heavy rain
O-ring seals protect mounts and release lever
Designed to match CANON's Telephoto L Series lens range, with optical performance that visually matches the image quality of the host lens, and high-level weather resistance
Maintain's AF operation within aperture limits of camera body
Maintains IS operationModel: 6864A004
Item Package Quantity: 1
Camera Magnify Power: 2.0
Lens Type: Converter
Lens System Special Functions: Tele
Mounting Type: Canon EF
Weight: 9.3 Ounces
Item Display Diameter: 2.8 inches
Length: 2 inches

Canon EF 1.4X II Extender Telephoto Accessory:

Max diameter & length (mm) - 67.6 x 27.3
Weight - 200 grams
With the Extender attached, the f-number decreases by one stop
Autofocusing is also possible with lenses whose maximum aperture is f/4 or faster
Lens construction - 5 elements / 4 groups
Model: 6845A004
Item Package Quantity: 1
Camera Magnify Power: 1.4
Lens Type: Converter
Mounting Type: Canon EF
Weight: 7.8 Ounces
Item Display Diameter: 2.9 inches
Length: 1.1 inches

Canon EF 85mm f/1.8 USM Telephoto Lens for Canon SLR Cameras:

f/1.8 maximum aperture
Ring-type UltraSonic Motor (USM)
EF mount; telephoto lens
Inner focusing; full-time manual focus
85mm focal length
Angle of view (Horizontal, Vertical, Diagonal): 24 degrees, 16 degrees, 28 degrees 30 minutes
Lens construction: 9 elements in 7 groups
Number of diaphragm blades: 8
Minimum aperture: 22
Closest focusing distance: 2.8 feet
Maximum magnification: 0.13x
AF actuator: USM
Filter diameter: 58 millimeters
Maximum diameter by length: 75.0 by 71.5 inches
Weight: 15 ounces
Magnification with Extension Tube EF 12 II: 0.27 to 0.15
Magnification with Extension Tube EF 25 II: 0.44 to 0.32
Lens hood: ET-65III
Hard case: LH-B12
Soft case: ES-C13, LP1014
GF Holder III (Hood III): 5
GF Holder IV (Hood IV): 4
Warranty: 1 year

Canon EF 16-35mm f/2.8L USM Ultra Wide Angle Zoom Lens for Canon SLR Cameras:

/2.8 constant maximum aperture
Micro UltraSonic Motor (USM)
EF mount; ultra-wide zoom lens
Super Ultra-low Dispersion glass; inner focusing; aspherical lens; full-time manual focus
16-35mm focal length
Angle of view (Horizontal, Vertical, Diagonal): 94 to 54 degrees, 74 to 38 degrees, 108 to 63 degrees
Lens construction: 14 elements in 10 groups
Number of diaphragm blades: 7
Minimum aperture: 22
Closest focusing distance: 0.9 feet
Maximum magnification: 0.22x
AF actuator: USM