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Kenko F8 Instruction Manual

Mirror lens 400 mm
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This is a telephoto lens for a single-lens reflex
camera or interchangeable lens mirrorless digital
camera, adopting reflective optics to achieve a long
focal length within a compact body.
3-9-19 Nishi-Ochiai, Shinjuku-ku, Tokyo 161-8570
http://www.kenkoglobal.com
Instruction Manual

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Summary of Contents for Kenko F8

  • Page 1 Instruction Manual This is a telephoto lens for a single-lens reflex camera or interchangeable lens mirrorless digital camera, adopting reflective optics to achieve a long focal length within a compact body. 3-9-19 Nishi-Ochiai, Shinjuku-ku, Tokyo 161-8570 http://www.kenkoglobal.com...

  • Page 2: Name Of Each Part

    1. Name of Each Part Focus ring Distance scale (in feet) Distance scale (in meters) Macro magnification scale Distance scale indicator mark T-mount adapter (Sold separately) T-mount attachment thread Filter attachment thread (Inside of rear) Filter attachment thread (Front) [Fig. 1] [Fig.

  • Page 3: Attaching The Lens To The Camera

    2. Attaching the Lens to the Camera Align the indicator marks on the T-mount and the camera, and then turn the lens until you hear a “click.” (For attachment and removal, refer to “Attaching the Lens” and “Removing the Lens” in your camera's manual.) Check the attached lens for any looseness.
  • Page 4 3. T-Mount You must adjust the position of the T-mount to adjust the position of the lens. Remove the T-mount to attach rear filters to the lens. Use the following procedure to adjust the position of the T-mount or remove the T-mount: [Fig.

  • Page 5: Setting Up The Camera

    4. Setting Up the Camera Some cameras must be set up to be to use a manual lens prior to lens attachment. Set up your camera by referring to the information provided below. For details, refer to your camera's manual. As a general guide, the shutter speed should be in a range of 1/500 to 1/1000 on a fine day when the ISO sensitivity is set to 400.

  • Page 6: Performance Table

    5. Performance Table Brightness F8 (fixed) Lens construction 2 groups, 6 lenses Minimum focus distance 1.15 m Macro magnification factor 1:2.5 Filter diameter 67 mm (diameter of filter at rear of lens) (30.5 mm) Maximum diameter 74 mm 82mm Overall length (excluding T-mount)

  • Page 7: Taking Photographs

    6. Taking Photographs Preventing Blurry Images • This lens is small and light, but it's still a telephoto lens with a long focal length. Generally, telephoto lenses are associated with a small angle of view and higher probability of the images becoming blurry due to magnifications of every movement of the lens know as “camera shake”...
  • Page 8 7. Troubleshooting Attaching the lens Condition Cause Remedial action The lens can't be attached to Attach the T-mount to the lens and then set the lens on the The T-mount isn't attached to the camera. T-mount to the camera. the lens. The T-mount doesn't match the Provide a T-mount appropriate for your camera.

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