Slow Orthographic Rendering

[phloptik]

Rendering in the orthographic View is extremely slow. What is the best way to do this, I have a 4 minute render from a perspective view turn into 10 hours in the orthographic mod

At first I just used the orthographic camera from cinema 4d, and then I applied the octane tag and ticked the "Orthographic" button and got the same results.

I'm rendering displacements from a top view, is there a problem with rendering displacement maps in an orthographic camera?

Octane is rendering 1 sample every minute, thats how slow it's going - Any help would be appreciated, Let me know if you want the scene, using version 3.02 I believe

[aoktar]

Can you try with edit in standalone? Let's see what happen in standalone.

[phloptik]

I'll give it a go later today - I ended up using 300 samples and downrezed my mesh that was used for displacing which gave me a slight speed increase. Pathtracing with 300 samples took around 20 to 40 mins per frame rendering at 4kx4k which isn't bad but compared to rendering in the perspective camera which I usually bump up to 1500 samples tells me there is some kind issue when switching to an ortho cam.

[phloptik]

Started editing in the stand alone, getting the same speed there as well - want me to send over the file?

[aoktar]

Started editing in the stand alone, getting the same speed there as well - want me to send over the file?

That's not surprising since plugin is based that. Yes please.

[phloptik]

Grab the attached file - I have another camera in the scene, if you turn that on and render, it should render in about 15 seconds - and then the orthocam should take about 16 mins - I just have one 980ti card however =/ but this seems pretty slow - using version 3.03.3

[phloptik]

Any luck with this issue?

[bepeg4d]

Hi phloptik,
maybe I'm wrong, but I think that there is no issue in your scene.
If you change the zoom factor in the Orthographic camera, you'll see that the render time changes accordingly:

but you have the same effect if you zoom in with a normal camera. Since the object is covering all the buffer, the render time is higher... isn't it?

ciao beppe

[phloptik]

I was getting dramatic slow downs for the total render time in an ortho view but if your not seeing that then it must be some kind of issue here. Talking about total render time in ortho versus perspective -