|Specifications||Canon EF 17-40mm f/4L USM Lens|
|Mounts On||Full Frame, APS-C|
|Lenses / Groups||12/9|
|Angle of View: Diagonal||104° - 57° 30'|
|Aperture Range - Wide / Long||f/4.0-22|
|Number of Aperture Blades||7|
|Manufacturer Specification Weight||16.8 oz  (475g)|
|Actual Weight||16.6 oz  (470g)|
|Lens Hood Weight||1.2 oz  (35g)|
|In-Use Weight||17.8 oz  (505g)|
|Manufacturer Spec Size (DxL)||3.31 x 3.82”  (84 x 97mm)|
|Measured Size (DxL)||3.28 x 4.09”  (83 x 104mm)|
|Max Length at Full Extension||4.09”  (104mm)|
|Internal Zoom? / Extends with Zoom?||Y / N|
|Internal Focusing? / Extends with Focusing?||Y / N|
|Lens Hood Size (DxL)||4.27 x 1.8”  (108.4 x 45.6mm)|
|Lens Length with Hood (Min-Max)||5.71 - 5.71”  (145 - 145mm)|
|Size of Rings: Focus / Zoom||0.86” / 0.8”  (21.9mm / 20.2mm)|
|Filter Size||77mm UV ► CP ►|
|Front Element (Filter Mount) Rotates||N|
|AF Motor Type||Ring USM|
|Full Time Manual Focus||Y|
|Focus Ring Rotation||95°|
|Focus Limiter? / Focus Limiter Ranges||N|
|Distance Scale? / Type||Y / Window|
|Specified Min Focus Distance||11.02”  (280mm)|
|Tested Min Focus Distance (Wide / Long)||10.51” / 10.55”  (267mm / 268mm)|
|Maximum Magnification (MM)||0.25x|
|Magnification Range with 12mm Ext Tube||0.83-0.32x|
|Magnification Range with 25mm Ext Tube||1.02-0.4x|
|Zoom Ring Rotation||53°|
|Tripod Ring Included? / Removable?||N|
|Zoom Ring Lock Switch?||N|
|Lens Hood Included / Model?||Y / EW-83E Buy ►|
|Weather Sealed? / Filter Required?||Y / Y|
|Image Stabilization? / Stops? / Tripod Sensing?||N|
|Case Included? / Type?||Y / LP1319 Buy ►|
|47.25" x 31.5" Subject Framing Distance||17mm = 2.19'
20mm = 2.48'
24mm = 3.00'
28mm = 3.52'
35mm = 4.31'
40mm = 4.73'
On APS-C Body:
17mm = 3.34'
20mm = 3.79'
24mm = 4.56'
28mm = 5.29'
35mm = 6.63'
40mm = 7.27'
|1200mm x 800mm Subject Framing Distance||17mm = 668mm
20mm = 756mm
24mm = 916mm
28mm = 1072mm
35mm = 1315mm
40mm = 1441mm
On APS-C DSLR:
17mm = 1018mm
20mm = 1154mm
24mm = 1391mm
28mm = 1613mm
35mm = 2021mm
40mm = 2217mm
|Review||Canon EF 17-40mm f/4L USM Lens|
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