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Smola Martin · Posted: Tue Jul 17, 2007 9:28 am Post subject: Tripod Sony HDR-FX1

I have shot from Sony HDR-FX1
1440x1080, interlace, PAL

How set up input data?
Image Aspect 1.778
Pixel Aspect 1.333 ---change 1440x1080 to 1920x1080
Back Plate ?????
Anamorphic Squeeze ?????
Negative´s Aspect ????

data objective
F 1,6-2,8
f (convertible to 35mm) photo (mm) 32,5 - 390
f (focal length) mm 1,5 - 54

tripod was shot with lowest focal length without change ..... 32,5 ???

When I set up Known Focal length .... 32,5 Error is 14.81
When I set up fixed Unknown .......compute 21,583 focal length and Error is 1.21

Where is mistake?

Smola Martin · Posted: Tue Jul 17, 2007 9:41 am Post subject:

What I calculate with tripod?

.... here isn´t 3D data it¨s 2D tracking from image where I calculate speed of rotate camera?

ssontech · Posted: Tue Jul 17, 2007 12:17 pm Post subject:

I can't really understand this very well. But, I don't know the exact back plate width of the HDR-FX1. Unless they have done a careful calibration with the same camera/lens, no one else does either. You should almost always use the "Unknown" setting --- the focal length from the lens is not helpful by itself. Field of view matters, not focal length.

Smola Martin · Posted: Tue Jul 17, 2007 12:34 pm Post subject:

Sony HDR FX-1
back Plate 4.8 x 2.7 ..... find google I mean it is important value for solve tracking?

when I zoom I changed focal length or field of view?