Jun
21
Hello guys,
I wonder if anyone can help me jumpstarting an anamorphic workflow in Syntheyes.
The project was shot on anamorphic Hawk lenses. The film is very green screen heavy, and often, there are no features (horizontal or vertical lines) that would help me figure out the lens distortion. All I’ve got, 90% of the time, is a green screen backdrop and the characters in front of it.
I know the focal length for each of the shots, however, it isn’t of much help, since it seems that Syntheyes automatically calculates the Field of View based on the focal length — but the Field of View it gives me is wrong (since the lens is anamorphic.) At the same time, I cannot really do anything meaningful in the Image Preparation panel, since I don’t have any lines in the shot to go by, as distortion reference.
Any ideas on what needs to be done, in this case? Our 3D guys have the cameras set up for a particular FOV/Focal Length relationship in Maya, which works for them, and I suppose I could just feed their settings in Syntheyes’ Lens Preparation panel, but Syntheyes wouldn’t let me enter these values separately: they seem to be linked, and I can either enter a correct FOV with an incorrect Focal Length, or the other way around…
Any tips would be greatly appreciated!
Michael
I wonder if anyone can help me jumpstarting an anamorphic workflow in Syntheyes.
The project was shot on anamorphic Hawk lenses. The film is very green screen heavy, and often, there are no features (horizontal or vertical lines) that would help me figure out the lens distortion. All I’ve got, 90% of the time, is a green screen backdrop and the characters in front of it.
I know the focal length for each of the shots, however, it isn’t of much help, since it seems that Syntheyes automatically calculates the Field of View based on the focal length — but the Field of View it gives me is wrong (since the lens is anamorphic.) At the same time, I cannot really do anything meaningful in the Image Preparation panel, since I don’t have any lines in the shot to go by, as distortion reference.
Any ideas on what needs to be done, in this case? Our 3D guys have the cameras set up for a particular FOV/Focal Length relationship in Maya, which works for them, and I suppose I could just feed their settings in Syntheyes’ Lens Preparation panel, but Syntheyes wouldn’t let me enter these values separately: they seem to be linked, and I can either enter a correct FOV with an incorrect Focal Length, or the other way around…
Any tips would be greatly appreciated!
Michael
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