NN4 Upper Arm Detent Resolution

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  1. NN4 Upper Arm Detent Resolution

    #1

    The NN4 has a detent resolution of 15 degrees on the horizontal arm.
    Is there an option or method to make this finer - say 5 degrees?

    Thanks
    Calvin
  2. #2
    Users Country Flag
    Join Date: Aug 2008
    Location: Netherlands
    Posts: 1,741

    Hi Calvin,

    Normally I have to say No, cause the system is designed to click into theses intervals.

    I tried to set it to 5°. When you move slowly preventing the rotator to click into the next step, you can fix it to 5°. The knob is fixing earlier, the rotator does not close in the same way as on the 15° steps. It holds the upper rotator in a similar way the NN5 did. I have to check wether this is changing LRS, plus how long this will stand. But this is at your own risk.

    The extra 5/7.5/10° upper rail settings only change the "start" position by opening up the screw of the upper rail and replacing the two knobs of the upper rotator to the 5/7.5/10° intern rotator position ( see extra pics on e-store ). After changing the rail position — 10° — you have to adapt the "degree ring" to 10° to 0° mark with the small hex screw. But then, stops change with 15° intervals: 10, 25, 40 etc. This means: you only change the start position and then go on by 15° intervals.

    Regards,
    Heinz
  3. #3
    Users Country Flag
    Join Date: Apr 2008
    Location: Hong Kong
    Posts: 2,442

    Hi Calvin,

    Heinz is right. if you want to shoot at other interval, you need NN5 series.

    Nick



    Fanotec
    We listen. We try harder.
  4. #4

    Thanks guys - you told me what I was expecting to hear but not what I wanted to hear.

    Are the upper arms of the NN4 and NN5 interchangeable and does Fanotec/NN sell just the upper parts I'd need to get the detent features of the NN5 on my NN4, or does this even make sense?

    It seems odd to me that higher resolution detent rings are offered for the lower rotor and we're stuck at 15 degrees on the upper.
  5. #5
    Users Country Flag
    Join Date: Apr 2008
    Location: Hong Kong
    Posts: 2,442

    Quote Originally Posted by ckmcdonald View Post
    Thanks guys - you told me what I was expecting to hear but not what I wanted to hear.

    Are the upper arms of the NN4 and NN5 interchangeable and does Fanotec/NN sell just the upper parts I'd need to get the detent features of the NN5 on my NN4, or does this even make sense?

    It seems odd to me that higher resolution detent rings are offered for the lower rotor and we're stuck at 15 degrees on the upper.
    NN4/5 upper rotators are not interchangeable.
    the upper rotator has 15 deg, because of 3/2 aspect ratio in SLRs, the lower rotator will need 10 deg interval. But then you can use more overlap with smaller interval. when you are making stereo (3D) panoramas with NPP offset from rotation axis, you need much finer interval to reduce stitching errors.
    reference: http://www.nodalninja.com/forum/show...heye-lens-quot
    To get smaller interval with positive lock, you need the Ultimate M1 which has 7.5 deg. The M2 under development can support finer interval for lens >400mm in fl.

    Nick
    Last edited by nick fan; 05-18-2011 at 11:07 AM.



    Fanotec
    We listen. We try harder.
  6. #6
    Users Country Flag Destiny's Avatar
    Join Date: Apr 2011
    Location: Queensland, Australia
    Posts: 75

    Hi guys.... well.. I have a little problem... I have been trying so hard to stitch my bracketed fused pano images using Photomatix when I hit a snag... In PTGui they stitch mostly very well but in apg they don't... It appears that one of the Moderators suggested that my shooting pattern is not suitable for the equipment I have.... I am using a D90 with a 10.5 fisheye lens.. He suggests I put my pitch down to 12 degrees X 6 round and one Zenith... Sounds fine but I cannot do 12 down since the NN4 will not let me... So I have to do 15 down + one zenith but then on a DX camera, since its not full frame, it leaves gaps in the image... So I have to do 6 X 15 down and 6 X +15 without a zenith.. Again in PTGui it stitches fine but in apg it will not... Probably due to too much overlap, not sure... apg does not like too much overlap... Any suggestions....

    Destiny.....
    Last edited by Destiny; 07-04-2011 at 04:38 PM.
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