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CHINON Auto Focus 50mm F1.7 Manual

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Chinon Auto Focus
50mm F1.7 lens
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Summary of Contents for CHINON Auto Focus 50mm F1.7

  • Page 1 M. Butkus, N.J. This page may not be sold or distributed without the expressed permission of the producer I have no connection with Chinon Co., Japan If you find this manual useful, how about a donation of $2 to: M. Butkus, 29 Lake Ave., High Bridge, NJ 08829-1701 and send your e-mail address so I can thank you.
  • Page 2 Webmaster: Actually this lens can work on any K-mount camera. It will not lock the shutter if the image is out-of-focus on non-Chinon cameras. Since it sends out it's own IR light, it works in very dark setting. NOMENCLATURE...
  • Page 3 13. Auto-focus button INTRODUCTION Welcome to the world of CHINON photography. Chinon has developed a new infrared auto focus system which permits stepless operation even in total darkness. How It Works: An infrared Light Emitting Diode (LED) sends out an infrared beam to the subject. The beam is then reflected back to the cameras internal infrared receiving sensor.

  • Page 4: Specifications

    12,500 cycles per second. Your new Chinon 50 mm auto focus lens is perfect when shooting under adverse lighting conditions. With the 50 mm AF you do not have to worry about the often time consuming task of focusing.

  • Page 5: Installing The Batteries

    Aperture Range: F/1.7 - F/22 Battery Check: Built-in Battery: 3 AAA size Alkaline batteries (LR03: 1.5V x 3) operate the auto focus unit Lens: Chinon F/1.7 50 mm multi-coated lens Lens Construction: 6 elements in 5 groups Angle of View: 46°...

  • Page 6: Battery Testing

    NOTE: The battery check LED (green) on the focusing panel will not illuminate if the batteries are installed incorrectly. MOUNTING THE LENS: 1. Remove the rear lens cap from Chinon auto- focus lens (fig.4). 2. Remove the lens or body cap from your camera body (fig.

  • Page 7: Auto Focusing

    AUTO FOCUSING: Look through the viewfinder and center the subject by utilizing the split image with microprism collar in the viewfinder. Depress the auto-focus button, the focus ring will rotate automatically until the subject is in focus (fig.7). The direction of rotation will be displayed on the focusing panel by a red arrow.

  • Page 8: Focus Lock

    * Non-reflectable subjects (smoke, fog, etc.) Just as beam of light from a flash light will pass through these subjects, so will the infrared beam of your 50mm AF lens. Should you have to take pictures under the above conditions, you may focus the camera manually or estimate the camera-to-subject distance.
  • Page 9 NOTE: Read the instructions packed with the infrared film for further information. NOTE: All accessories can be used on your 50 mm AF lens, however, the following three accessories are not recommended. 1. Close-up lens 2. Lens hood 3. Extension Tubes NOTE: When the lens must be used with one of the above accessories, focusing must be adjusted manually.

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