XSI Field of View vs. Real Life Field of View

[sonne]

Hi,

I was just wondering, how close XSI field of view is to real life field of view? If there's a difference, how do I convert it?

Also, could this have been done using Mental Ray in the same time frame :http://www.highend3d.com/artists/artist.3d?au=panrok&iid=86

It seems pretty fast to me..

/Peter

[fuzy]

Could you explain a bit more what you mean? From what i know FOV is just the control for the perspective distortion in the camera.

What i noticed in the picture was the nice radiosity lighting which looks like something done in Lightscape. As far as i know 3ds VIZ is still more or less the standard MAX render. I haven't done that much GI/FG in Mental Ray, but I've used a bit of Lightscape. It can be a bit of a problem because you have to model for it. The geometry has to be very clean since the solution relies on subdividing the actual geometry to according to how the light/shadows are in the model. And it can take some time getting the geomtry right.
But if the model is reasonably clean the radiosity process is fast as the pictore in your example shows.
Unfortunately i haven't used GI/FG that much but it's my impression that this method is a bit less geometry dependant.

Ivanp.

[sonne]

What I mean is: If I use a 50 mm lens in XSI, is it then the same as a 50 mm lens in a real camera (I know it won't distort unless I use the Real Camera olug-in)?
The reason why I ask, is that as far as I remember, this wasn't the case in Softimage 3d.

Regarding the second thing: This was meant like "Damn, that's pretty fast". Especially considering how clean those images look. Lightscape may be a bit hard to use (I've never used it myself), but from what I've heard, once your raydiosity calculations are done, the scenes renders incredibly fast. VERY unlike Mental Ray. Now that we can bake Final Gathering, why can't we bake GI as well? The "don't recompute GI"-button in render options doesn't really help much.

/Peter

[pnoizat2]

I will be testing vis 4's radiosity rendering this week (if i get time...) hopefully it has changed since lightscape, I hated being that retentive when i modeled using Max's snapping tools...... (it may have just been me?).

as for the fov question, its whatever you make it......
the problem is, "real" is very subjective, there is no clear distinction between what is within your field of vision and what isnt...... The grey, "perifery" area, you can clearly make out say 50 to 60 degrees, it gets a little ambiguous after that.

excellent

[fuzy]

teanau: I will be testing vis 4's radiosity rendering this week

• I would like to hear about your results. And I agree with you on the modelling for Lightscape issue

sonne:but from what I've heard, once your raydiosity calculations are done, the scenes renders incredibly fast.

• true, but when planning for using it in an actual production it's quite important to allow some extra time for the modelling since it's more restrictive modelling for Lightscape than 'normal' CG modelling, eg. no intersections etc..etc.. - you can't 'cheat' that much. So the time gained in rendering becuse of the incresed speed might be traded off due to the restrictive modelling. But then again, this is only my personal experiences.

Ivan Pedersen