HDRI and model size

[voon]

I have this nice could HDR surrounding texture ..... and I have a model of a 100m long spaceship (100m inside Blender). Imported into Octane, I have this big HDRI ... and my spaceship is tiny, if I try to get it completely into view. How does one recreate a 100m long spaceship in a HDRI? If I just zoom it, I see nothing but a single panel of the spaceship ... if I zoom out to have it entirely on screen, it seems to have the size of a tiny toy. I guess I just have to bring my camera further out or something. Of course it depends what's on the HDRI .... with just clouds, you don't get a reference frame for distance and the ship could be anything from tiny to gigantic. But If I look down at it from top, the grass on the floor is big, and the ship small.

[kavorka]

you can change the scale of the HDRI. A lot of HDRIs don't work very well for things like this because the image scale wasn't taken into account for compositing, etc.

[xxdanbrowne]

Bring the camera really close and fisheye it.

The special effects dudes used to use really small models with the cameras really close up to make the spaceships look huge. It's all trickery.

See my amateurish attempts in the thread below (the quality isn't great because obviously I'm an amatuer but I hope you'll get the point that closeup camera makes it look big)

http://render.otoy.com/forum/viewtopic. ... ak#p166633

[kavorka]

If you ever want something to look large, use a low lens size, 10-15 mm should work. The bigger the lens, the smaller things appear.

[voon]

Lenses it is then ... got to try, thanks for the hints!

[TBFX]

Hi Voon,

I think the problem you initially described is because all HDRI's you can find are photographed from 5-6 feet off the ground. If you want to use an HDRI for a large object that is supposed to be 1000 feet in the air then the HDRI would need to be photographed at an altitude of 1000 feet. An HDRI is just a photograph in the end and you can't create a new view of it with a virtual camera.

T.