- Thu Mar 01, 2007 7:22 pm
#212920
Maxwell's camera has a virtually infinite focal length, like a super giant macro to telephoto lens. Now you use a background in a custom MXM (say a HDR for argument) which is the only way you can in the current plug. The problem comes that you must interpret what focal length that HDR was made with to show correctly in your viewport and render. But considering you cannot see that custom MXM in your viewport, it is complete guesswork and trial and error. Getting close is only agonizing horrible, but getting very close or exact (for photo matching for example) is cut-your-leg-off ridiculous.
The only option is to use studio where you can see it in the viewport and use some combination of key strokes I cannot remember to dynamically adjust the focal length until it matches whatever the original HDR was made with. Of course, even if you knew what the original was made with you still have to adjust because of lens distortions and differences between film and digital focal length unless your using a backplane that mimics actual film focal lengths blah blah blah.
Does any of this make sense? In short, there should be some way of scaling / matching backgrounds that works.
Steve
Well, I'm not an expert, but let me try with an example. If you take a camera and shoot across the street you could see a wide panarama including ground close to you as well as several blocks away (short focal length). Or you could see the hubcap of a car two blocks away (long focal length) essentially zoomed in.jc4d wrote:Please seco7 can you explain me in more detail this request?
Maxwell's camera has a virtually infinite focal length, like a super giant macro to telephoto lens. Now you use a background in a custom MXM (say a HDR for argument) which is the only way you can in the current plug. The problem comes that you must interpret what focal length that HDR was made with to show correctly in your viewport and render. But considering you cannot see that custom MXM in your viewport, it is complete guesswork and trial and error. Getting close is only agonizing horrible, but getting very close or exact (for photo matching for example) is cut-your-leg-off ridiculous.
The only option is to use studio where you can see it in the viewport and use some combination of key strokes I cannot remember to dynamically adjust the focal length until it matches whatever the original HDR was made with. Of course, even if you knew what the original was made with you still have to adjust because of lens distortions and differences between film and digital focal length unless your using a backplane that mimics actual film focal lengths blah blah blah.
Does any of this make sense? In short, there should be some way of scaling / matching backgrounds that works.
Steve
Hail BTPM, the render engine of the future!