Canon EF 17-40mm f/4L USM Instruction Download Page 1 | Manualshive

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EF17-40mm f/4L USM

Instruction

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Summary of Contents for EF 17-40mm f/4L USM

Page 1: ...EF17 40mm f 4L USM Instruction ENG COPY ...

Page 2: ... focus in autofocus mode ONE SHOT AF 4 A truly round aperture hole results in a nicer background blur 5 Tight seal structure ensures excellent dust proof and drip proof performance Since the front element of this lens moves when focusing zooming you need to attach a Canon PROTECT filter sold separately for adequate dust and water resistant performance Without a filter the lens is not dust or water...

Page 3: ... device must accept any interference received including interference that may cause undesired operation Do not make any changes or modifications to the equipment unless otherwise specified in the instructions If such changes or modifications should be made you could be required to stop operation of the equipment This equipment has been tested and found to comply with the limits for a class B digit...

Page 4: ... scale 6 Focus mode switch 5 Lens mount index 4 Contacts 4 Hood mount 7 Focusing ring 5 Gelatin filter holder 8 Filter mounting thread 7 Zoom ring 5 For detailed information reference page numbers are provided in parentheses COPY ...

Page 5: ... After detaching the lens place the lens with the rear end up to prevent the lens surface and electrical contacts from getting scratched If the contacts get soiled scratched or have fingerprints on them corrosion or faulty connections can result The camera and lens may not operate properly If the contacts get soiled or have fingerprints on them clean them with a soft cloth If you remove the lens c...

Page 6: ... mode set the focus mode switch to AF To use only manual focusing MF set the focus mode switch to MF and focus by turning the focusing ring The focusing ring always works regardless of the focus mode 2 Setting the Focus Mode After autofocusing in ONE SHOT AF mode focus manually by pressing the shutter button halfway and turning the focusing ring Full time manual focus COPY ...

Page 7: ...e index The infrared index corrects the focus setting when using monochrome infrared film Focus on the subject manually then adjust the distance setting by moving the focusing ring to the corresponding infrared index mark The infrared index position is based on a wavelength of 800 nm The compensation amount differs depending on the focal length Use the indicated focal length as a guide when settin...

Page 8: ...the lens and also protects the front of the lens from rain snow and dust To attach the hood align the hood s attachment position mark with the red dot on the front of the lens then turn the hood as shown by the arrow until the lens red dot is aligned with the hood s stop position mark The hood can be reverse mounted on the lens for storage Part of the picture may be blocked if the hood is not atta...

Page 9: ... gelatin filter ghosting may appear in the image You can attach Extension Tube EF12 II or EF25 II for magnified shots The shooting distance and magnification are shown below 9 Extension Tubes Sold separately Camera to Subject Magnification Distance mm Near Far Near Far EF12 II 17mm 155 159 0 83 0 70 40mm 206 271 0 59 0 32 EF25 II 17mm Incompatible 40mm 196 218 1 02 0 70 Manual focusing is recommen...

Page 10: ...e up Lens enables close up photography The magnification will be as follows Can be used at the 40mm end magnification 0 30x 0 08x Close up Lens 250D cannot be attached because there is no size that fits the lens Manual focusing is recommended for accurate focusing COPY ...

Page 11: ... Max Diameter and Length 83 5 96 8 mm 3 3 3 8 inch Weight 475 g 16 8 oz Hood EW 83E Lens Cap E 77U Case LP1319 The lens length is measured from the mount surface to the front end of the lens Add 21 5 mm when including the lens cap and dust cap The size and weight listed are for the lens only except as indicated The EF1 4X II EF2X II extenders cannot be used with this lens Aperture settings are spe...

Page 12: ... CANON INC 2003 CT1 7546 006 2009 7 COPY ...

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