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Rokinon 14mm focus issues

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  • Mark D. Fink
    Have other owners of the Rokinon/Samyang 14mm lens found that the focus scale is way off? I was testing mine this weekend and found that it was focusing at
    Message 1 of 2 , Oct 7, 2013
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      Have other owners of the Rokinon/Samyang 14mm lens found that the focus scale is way off? I was testing mine this weekend and found that it was focusing at infinity when the lens scale was between 2 and 3 meters! I found the link below on how to adjust it, but was only partly successful. The lens no longer focuses past infinity as it used to, but I wasn't able to adjust the focus ring so that infinity lines up with the white focus line. I use an imaginary line to the right of it that is easy to remember in place of that.

       

      My plan is to use the hyperfocal method for focusing, especially since it is so difficult to visually see what is in focus with such a wide angle lens. From what I see, f/8 at 7.75 feet should give me everything from just over four feet to infinity.

       

      http://www.videofy.me/emadeloc/755452

       

      Does anyone have suggestions on how to move the focus ring other than the way it is done in this video? My focus ring won't pull back towards the camera after removing the tape.

       

      I had rented a Rokinon 35mm lens for my trip to Italy and used hyperfocal settings based on the focus scale. My results weren't as sharp as I had hoped, and I'm wondering now if the focus scale on that lens was off as well...

       

      Mark

       

       

       

       

    • John Conway
      Hay Mark, I have the 8mm and the scale was not really a scale in that it was so far off. I did not go into the repair and did a focus test and found the sweet
      Message 2 of 2 , Oct 7, 2013
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        Hay Mark, I have the 8mm and the scale was not really a scale in that it was so far off. I did not go into the repair and did a focus test and found the sweet spot for this lens to be about a 1/4 of the throw from the closest focus point. Really Sam Yang focus range could be 1/4 of the rotation that it is now. Maybe its considered a bad lens if it only has a small rotation. I shoot at F8 at .04 meters or between 1.5 and 1.2 ft. Crazy that a lens could be that far off. Must be a crazy company in that the optical engineers put out the plan and the glass folks do their work but the final assembly is where the attention to detail fall off. KAAArazy. Still love mine. Good luck
        John Conway


        On Mon, Oct 7, 2013 at 8:46 AM, Mark D. Fink <markdfink@...> wrote:
         

        Have other owners of the Rokinon/Samyang 14mm lens found that the focus scale is way off? I was testing mine this weekend and found that it was focusing at infinity when the lens scale was between 2 and 3 meters! I found the link below on how to adjust it, but was only partly successful. The lens no longer focuses past infinity as it used to, but I wasn't able to adjust the focus ring so that infinity lines up with the white focus line. I use an imaginary line to the right of it that is easy to remember in place of that.

         

        My plan is to use the hyperfocal method for focusing, especially since it is so difficult to visually see what is in focus with such a wide angle lens. From what I see, f/8 at 7.75 feet should give me everything from just over four feet to infinity.

         

        http://www.videofy.me/emadeloc/755452

         

        Does anyone have suggestions on how to move the focus ring other than the way it is done in this video? My focus ring won't pull back towards the camera after removing the tape.

         

        I had rented a Rokinon 35mm lens for my trip to Italy and used hyperfocal settings based on the focus scale. My results weren't as sharp as I had hoped, and I'm wondering now if the focus scale on that lens was off as well...

         

        Mark

         

         

         

         




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