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  • question about flat panoram

    HI all
    im trying to shoot a flat pano with my NN5+RD16 and my D300s + 105 mm lens
    and i'm wondering about two things

    1. how can i find my NPP if the lens it so long (sigm 105 + D300s)

    2. when shooting, how should i set the focus if there is a large range between the 2 or 3 rows?

    Tamir

  • #2
    Hi Tamir,

    I did test Nikkor 105 on D3, difference to D300s following my tests in upper rails settings is 14mm, so D300s Nikkor 105 URS should be 78mm.

    You have to test the Sigma on your own.

    http://www.johnhpanos.com/epcalib.htm

    Focus: This is a long discussion. Focus is not always stable with different equipments. Actually you should test the sharpness specially with a series of shots with your own equipment.

    To get you on the road, you could use the "hyperfocal distance" for your chosen aperture. To get confused", you could have a look on www.panoguide.com and search "hyperfocal distance".

    http://www.dofmaster.com/doftable.html

    http://www.panoguide.com/forums/qna/9103/

    http://www.panoguide.com/search/?s=h...section=forums

    Regards,
    Heinz
    Last edited by hindenhaag; 05-02-2011, 09:18 AM.

    Comment


    • #3
      Originally posted by hindenhaag View Post
      Hi Tamir,

      I did test Nikkor 105 on D3, difference to D300s following my tests in upper rails settings is 14mm, so D300s Nikkor 105 URS should be 78mm.

      You have to test the Sigma on your own.

      http://www.johnhpanos.com/epcalib.htm

      Focus: This is a long discussion. Focus is not always stable with different equipments. Actually you should test the sharpness specially with a series of shots with your own equipment.

      To get you on the road, you could use the "hyperfocal distance" for your chosen aperture. To get confused", you could have a look on www.panoguide.com and search "hyperfocal distance".

      http://www.dofmaster.com/doftable.html

      http://www.panoguide.com/forums/qna/9103/

      http://www.panoguide.com/search/?s=h...section=forums

      Regards,
      Heinz
      tanks Heinz

      this is what i have soot with tne D300s + Sigma 105mm + NN5+RD16
      http://www.360vr.tamiror.com/mtzeitim
      at a hyperfocal focus

      and now i have another question about focus seting...

      i want to try shooting a 360*180 pano with the D300s + 50 mm lens, in a building.
      i know i'll have to change my focus during the shooting process...
      so how can i do it?

      i know how to calibrate the NNP

      Comment


      • #4
        Hi Tamiro,

        just recognized that something must have gone wrong with my answer.

        Looking to your pano when it is self turning I get squared blurry blocks in between which are not sharp. Are you sure you shave set lens and camera body to manual at focus? Did you tape the focus ring?

        I will send you the settings later on this weekend.

        Heinz

        Comment


        • #5
          With longer focal length lenses, you may not be able to accommodate the full depth of field of the scene with the lens at one focus setting. If necessary, you can shoot each row with a different focus setting. Changing the focus setting alters the fov, so you need to take account of this in the stitching. In PTGui, you can assign individual lens parameters (FOV) on the Lens Details tab. Do this for all rows other than the main horizontal row. You can use the advanced optimizer tab to optimize the rows individually or all together, as you like.

          I had to use individual parameters for this flat panorama in order to get the foreground sharp:
          http://www.johnhpanos.com/wimpole2-large.jpg (5MB - 3 rows of 7 using a 50mm lens)

          John
          Last edited by John Houghton; 06-04-2011, 12:12 AM.

          Comment


          • #6
            Hi Heins
            i checked agin and i didn't find any blurry squared... did you wait till it load?

            the camera and the lens was at manual focus...

            i'll wait for your setting.

            tanx
            Tamir

            Comment


            • #7
              Hi Tamiro,

              seems to be my internet which is very rare this weekend.

              Click image for larger version

Name:	s_Calc_50mm.jpg
Views:	1
Size:	105.4 KB
ID:	24748

              Success,
              Heinz

              Comment


              • #8
                hi Heinz
                tanx
                the chart is looking great... but i haven't understend how to read it...
                can you explain to me (if you have time for this) how it's work?

                Tamir

                Comment


                • #9
                  My breaktime...

                  You shoot the spherical panorama with 8 rows with different detent plunger settings = small blue knob of RD16 which gives you different numbers of stops. Each detent setting is related to a number of stops.
                  For each row you have to set the upper rail to a different pitch = moving the upper rail up or down to a certain angle║.

                  Now first shot +90║ for zenith.

                  1.row: detend plunger set to 24║ = 15 Stops, upper rail set to +72,5║ Pitch: begin at 0║ , turn to the right to the next stop, and take a shot at every single stop.

                  2.row: detend plunger set to 18║ = 20 Stops, upper rail set to +52.2║ Pitch: shot all the 20 stops, and reset the settings for the next row, and so on. For the rows with 12║ = 30 stops you only change the pitch for the next row.

                  At least shoot the two Nadir shots -90║ if you have a NN Nadir Adapter or a normal plus a handheld one.

                  If you end up with gaps in between shots to stitch, tell me and I will send a table with min 30% overlap, which will ask more shots and one more row.

                  Hope it helps,
                  Heinz

                  Comment


                  • #10
                    OK got it!

                    tanx again

                    Tamir

                    Comment

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