Assessments - 4, GPA: 4.5
(
)
)
|
Facilidade de uso
• 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 K index of the dust cap as shown in the diagram, and turn clockwise. To remove it, reverse the order. The lens mount has a rubber ring for enhanced water- and dust-resistance. The rubber ring may cause slight abrasions around the camera's lens mount, but this will not cause any problems. If the rubber ring becomes worn, it is replaceable by a Canon Service Center at cost. a Please be careful when laying the lens sideways while the lens hood and the lens cap are attached. The lens may roll and fall, resulting in injury. ENG-5 2. Setting the Focus 3. Zooming Mode To shoot in autofocus (AF) 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. After autofocusing in ONE SHOT AF mode, focus manually by pressing the shutter button halfway and turning the focusing ring. (Full-time manual focus) To zoom, turn the zoom ring. Be sure to finish zooming before focusing. Changing the zoom ring after focusing can affect the focus. ENG-6 Zooming “C” and “H” Markings Adjacent to the zoom ring, the “C” and “H” markings serve as guides to indicate the wide- angle zoom position where focus is set at infinity at which photos can be created without vignetting when using EOS digital cameras installed with APS-C or APS-H image sensors. The “C”/”H” indicator on the zoom ring is aligned with either the “C” or “H” marking. When the “C” / ”H” indicator above the focus ring is aligned with either the “C” or “H” marking, there are times when vignetting occurs in the corners of an image since the size of the image circle becomes smaller when the focus position is set at close range due to the optical characteristics of this lens. Zoom Limiter The zoom limiter function allows for wide-angle photos to be created when focus is set at infinity without vignetting when using an EOS digital camera installed with an APS-C image sensor by limiting the zoom range. Activate the zoom limiter by setting the zoom ring to between 10mm and 15mm, then slide the switch towards “LIMIT.” The zoom limiter cannot be used if the zoom ring is set between 8mm and about 10mm (when the “C” / “H” indicators on the zoom ring are set between the “C” indicator and the wide-angle direction on the ring next to the zoom ring). ENG-7 Zooming Description of Fisheye Lens Based Photography The various images below show the different relationships between the fisheye lens’s 180 degree angle of view and the size of each image sensor related to focal length. Approx. 15mm Focal Length: 8mm Full Frame Approx. 10mm APS-C Approx. 12mm APS-H Circular Fisheye Diagonal Fisheye Diagonal Fisheye Full Frame Diagonal Fisheye * The circle corresponding with each focal length indicates a 180 degree angle of view in the imaging area. * Vignetting occurs in the area outside of the image circle. • Circular Fisheye The circular fisheye effect refers to the 180 degree circular angle of view which appears within the area of the image sensor. When the focusing distance of this particular lens is set to infinity, the circular fisheye effect is achieved by setting the focal length (wide end) to 8mm and using a camera equipped with a full frame image sensor. • Diagonal Fisheye The diagonal fisheye effect refers to a 180 degree diagonal angle of view which corresponds with the size of the sensor. When the focusing distance of this particular lens is set to infinity, the diagonal fisheye effect is achieved by setting the focal length (telephoto end) to 15mm when used with full frame image sensors, approximately 12mm when used with APS-H, and approximately 10mm when used with APS-C. • Use of the zoom limiter at the lens’s wide end position does not guarantee that a diagonal fisheye effect will be created when used with APS-C sensors. • When the focusing distance is set to infinity, the angle of view when using the lens set at the telephoto end together with full frame format cameras is 175°30’ (diagonal). The 180° diagonal fisheye effect is achieved by slightly turning the zoom ring toward the wide end when the lens is set at 15 mm (telephoto end). • Due to the optical characteristics of the lens, the size of the image circle becomes smaller when the focus position is set at close range. ENG-8 4. Infinity Compensation Mark Infinity compensation mark Distance index To compensate for shifting of the infinity focus point that results from changes in temperature. The infinity position at normal temperature is the point at which the vertical line of the L mark is aligned with the distance indicator on...