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Field Of View has no impact on render speeds. Why?

Posted: Wed May 12, 2004 10:40 pm
by soletread
In a very large scene, one would think that by zooming into an apple in an orchard of trees, you would get a faster render than doing wide shot of the entire orchard of 1000 apples say.

But this is not the case at all. Blender seems to want to Parse the entire scene first. All 999 other apples. Even behind the camera.

Why is this? Animation would be hugely faster, if only FOV objects were taken into account, Or at least only objects that influence a scene, like shadow casters for instance.

And HUGE RAM requirements are needed. I had to go to 1 GIG to render this one apple. And dont mention Layers :wink: as there certainly arent enough to cater for all these apples. (But that's another issue)



Posted: Fri May 14, 2004 3:00 am
by SamAdam
its raytracing. maybe one of those apples will cast a shadow on it, or you will see a reflection. Try turning off raytracing, or just delete the apples for this render.

Posted: Fri May 14, 2004 3:53 am
by theeth
or move them to an invisible layer with layer IPO as your FOV moves away from them.


Posted: Fri May 14, 2004 9:45 pm
by soletread
Thanks SamAdam: Yep, it's raytracing.

Thanks theeth: Great idea, now just to figure it out. :)