I've noticed that all the BMPs Bryce created for the scenes are the same size. When I installed Bryce, all of them were 901 KB, regardless of the scene file size (from 840KB to 45MB). Then the bmp varied for a period. Not that it was correlated to the file size, as far as I can notice. Now all the BMPs are 2305 KB, and scene files go from 620K to 36MB. Anybody knows what happens and whether it could be a symptom of an error?

Eric, May i pose this hypothesis... The bmp is merely an image, like a transparency, a 2D type image with proportions yes but not 3D in and of itself. the file is 3D, not just an image. we sort of "sculpt in mesh" in the file. Hope this made a little sense.

BMP sizes are dependent only on size and colour depth. So if you're using 24-bit colour all the time, your BMP size will depend only on the dimensions of the image. As eppesart says, the scene size doesn't make any difference. Once you compress to JPG, however, your files sizes will vary dependent on the content of the picture. So if you have a picture with lots of detail, your file size is going to go up.

your 2305 BMP will probably be a bitmap of 1024x768 pixels with 24-bit colors. The size of your bitmap file has nothing to do with the bryce scene. But BMP's can make bryce files huge. For instance: I have made a vulcan in bryce out of 50 of symetrical lattices. All these lattices get their own BMP greyscale to height map, wich makes the filesize of the scenefile huge. If on the other hand you make a scene with 50 standard bryce spheres you don't need any BMP's to describe the shape of the spheres. you only need a very small piece of data to tell bryce to create a standard sphere. and the fiel remains relatively small.

Doh. Thanks. BTW, it's Erlik. Eric is somebody else. :-)