Originally Posted by tory40
I don't see why you'd want to push the whole scene back. The objects in the scene should all be at their appropriate physical dept from the camera.
Of course. Which is exactly why I'd want to perform a convergence tweak. The first shot is a prime example of a shot that has a strong enough interaxial but needs a simple convergence tweak to achieve a more realistic virtual window effect.
You were going on and on about the importance of interaxial distances and their impact on the spacing between two left/right infinity points, so I'm just reminding you that it's not always the interaxial that needs to be increased in all the instances of the bubbles video.
How do we know that all this shifting of convergence isn't the very cause of headaches? I have 600 hours of 3D gaming on my belt and the only time i got something resembling eyestrain or a headache was the first day i used the 3DTV and spent all sorts of time messing with convergence and depth adjustments. I also got an slightly mildly unpleasant sensation from watching Hugo.
"Messing with" convergence adjustments is not the same as being presented with a 3D feature film that adjusts the window on the fly stealthily. I don't know why you felt the way you did in Hugo, but I'm assuming you've watched more than one 3D film at home, and that they didn't all make you feel that way. But all films control the window on the fly.
Filming the scene in a substandard to account for crosstalk and new users that might be sensitive to 3D is not what i would call a great strategy for the movie industry and movie enthusiasts. When i have my OLED TV mounted to my motorized ceiling conveyer track that motors it closer, that doesn't have crosstalk and is being viewed by me and people used to 3D, im not going to be very happy with that effecting my favorite films in the future, the very near future....
The bigger your screen, the more properly scaled 3D films start to look. They start to look good in my opinion at 65 inches, which is why I got one. I believe that theatrical and Blu-ray releases have slightly different convergence biases to account for the screen sizes. So it should still look nice and big and cinematic. And for people who have smaller TVs, then hope you're not sensitive to the miniaturization, or hope that the TV has a convergence setting, usually known as a 3D Viewpoint or something along those generic average-joe-friendly terms. Tweaking the convergence can increase the perceived size and depth to something very comparable to a larger screen size.
Right, one size doesn't fit all. My advice was to evaluate the what screen size would likely be the largest katedunl and her viewers would use and adjust her separation for that display and viewing distance. [My calculation is 8.4cm on a 65in display.
As a content creator you don't want your largest intended viewers to be testing their physiological limits for extended periods of time, if at all. The reality is that you have a higher tolerance for diverging than the average person, so you can't know what the discomfort is even like.