[m-Que]

Hello, here's the problem:
When I'm exporting a number of frames for animation from Cinema 4D to Maxwell, I have to use "Maxwell Camera" option to set correct ISO, Shutter speed etc. Otherwise I would have to change all those options manually, frame-by-frame in Maxwell. So I create a camera, apply a "Maxwell camera" tag to it and... strange things begin to happen.
First of all, ISO value cannot be set lower then 50, but that's just part of it. The real problem is that there's no chance to set the options I want. Example: I set the Shutter speed to 500, and boom...shutter angle automaticly changes to 21.6. So I change the shutter angle back to 0, and shutter speed switches to 5000......and so on.
Now can anyone tell me is this a bug, and did anyone face the same problem?

[dyarza]

m-que,

The Shutter angle is going to be dependent on the frames per second, so in that case, it is working OK. On a real movie camera you have the film Iso and you set the shutter angle according to your fps and shutter speed you want. For example, at 24 fps (standard in the US for motion picture film) a 180 angle gives you an exposure of 1/48s which is pretty good unless you are moving around a lot with the camera. An angle of 72 would give you 1/120s which would be better for fast motion, etc, etc. Then control exposure with your lens Fstop.

A pretty basic setup would be a shutter angle of 180, and let the shutter speed be 1/48s. Your Fstop will depend on film speed and light conditions. A pretty common motion picture film Iso for daylight would be 250. Then do some tests to see what Fstop you will need.

So that is not a bug, but I have noticed that the Iso does not like going below 50 for some reason. I mean that is pretty realistic when it comes to real films, but with M~R's virtual film I don't know why there would be a limitation, especially when you can specify any value you want once it is rendering.

Happy animating.
D

[dyarza]

One more thing,

I got carried away with the camera theory... It is worth noting that M~R is taking the motion blur value from the motion blur tag applied to the object. I do not believe that it is dependent in any way on the speed of the exposure to the "virtual film" so you might be better off using whatever exposure (1/XXs) you want as if it were a still camera. It is not really how a motion picture camera works but it is simple to understand if you relate better to the still photo method. In that case just ignore the value of the shutter angle.

D

[m-Que]

Thank you, dyarza
It works perfectly!
The "camera-madness" was effected by Cinema settings, not plug-in.