Canon EF 8-15 mm f/ 4 L USM Fisheye Lens Manual Técnica (en)

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 Safety Precautions
1.  Do not look at the sun or a bright light source through the 
lens or camera. 
Doing so could result in loss of vision. Looking 
at the sun directly through the lens is especially hazardous.
2.  Whether it is attached to the camera or not, do not leave the 
lens under the sun without the lens cap attached.
 This is to 
prevent the lens from concentrating the sun’s rays, which could 
cause a fire.
 Handling Cautions
If the lens is taken from a cold environment into a warm one, 
condensation may develop on the lens surface and internal 
parts.
 To prevent condensation in this case, first put the lens 
into an airtight plastic bag before taking it from a cold to 
warm environment. Then take out the lens after it has warmed 
gradually. Do the same when taking the lens from a warm 
environment into a cold one.
1. Mounting and Detaching the Lens
See your camera’s instructions for details on mounting and 
detaching the lens.
•  After detaching the lens, place the lens with the rear end up to 
prevent the lens surface and 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, cover it with the dust cap. To attach it 
properly, align the lens mount index and the  index of the dust 
cap, and turn clockwise. To remove it, reverse the order.
2. Setting the Focus Mode
To shoot in autofocus (AF) mode, set the focus mode switch to AF 
.
To shoot in manual focus (MF) mode, set the focus mode switch to 
MF, and focus by turning the focusing ring. The focusing ring always 
works, regardless of 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)
3. Zooming 
To zoom, turn the lens’ zoom ring 
.
•  Be sure to finish zooming before focusing. Changing the zoom 
ring after focusing can affect the focus.
4. Infrared Index
The infrared index corrects the focus setting when using 
monochrome infrared film. 
Focus on the subject in MF, 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.
•  Be sure to observe the manufacturer’s instructions when using 
infrared film.
•  Use a red filter also when you take the picture.
Nomenclature
 Hood mount
 Zoom ring
 Focusing ring
  Zoom position index
 Distance scale
  Focus mode switch
  Lens mount index
 Contacts
 Distance index
 Infrared index
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Instructions