You are right that walking out and then zooming back in does solve the problem but like I said before, it does change the look of the image, mainly fog depth (for me anyway). There is no clipping in these three images but the first one will clip if I walk forward. The second one is walking out and zooming in (with no change to the lighting settings) so that I no longer get the clipping when I walk forward. And in the third one (using the zooming and walking settings from the second image) I tried to get the settings as close to the first as I could. The DOF and Ambient Shadow calculations obviously change as well so I guess I'll just have to learn to make sure nothing is clipping in the animation before I start setting up the lights, DOF, etc.
https://1drv.ms/i/s!AipZfHXaoLuv8DQqJu_NK62iMPvUhttps://1drv.ms/i/s!AipZfHXaoLuv8DPNRMYcxqxZxK4mhttps://1drv.ms/i/s!AipZfHXaoLuv8DUlXMGYwX-Eu18GI played around with the other file a bit and found that the zero 'Z' point is ahead of the camera. In this screen shot the brown bit in the middle of the screen is being clipped. If you look at the "Z1 Sharp" point in the Post Processing flyout you'll see it's at zero. I clicked the "Get Z1" button and then clicked on the clipped brown part of the image.
https://1drv.ms/i/s!AipZfHXaoLuv8DJOrXCBP9POR5urIn this next screen shot I've zoomed in, changed the FOV slightly, and Slid down a bit to keep the object in view, but I haven't walked forward or backward. The object obviously got larger but it's still at Z position zero and still a ways in front of the camera. If the camera was at zero then the whole image should be brown (in my thinking).
https://1drv.ms/i/s!AipZfHXaoLuv8DAiMlHIp6xE2NYQSo if the camera is a giant sheet of glass perpendicular to the Z plane and everything on the viewer's side of the sheet of glass is clipped and zooming moves your viewpoint forward and backward on the Z plane so that you are either in front of or behind the sheet of glass... what zoom value places you at the sheet of glass? Or does the value vary with the distance you have moved into the fractal? Or in other words, am I going to have to increase the zoom value the further I move into the fractal to prevent further clipping?
This is the image data if you want to play with it -
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