Partial rendering a scene / "Spot rendering" to File

Scavenger

Is it possible to only render part of a scene?

I don't mean using the spot render camera tool to see something on the screen how it'll look.

I mean, just like ...selecting a section of the scene, and rendering it out to a file with the full settings and resolution hitting "cmd -R" would give you? Not moving the camera to only focus on the object...same camera distance etc...

using built in renderer....

The situation:

I'm doing a three picture sequence. I've decided while doing the third picture, I wanted to change the label on a wine bottle in the scene.

Rather than having to do an entire re-render, I would like to just be able to render an area surrounding the bottle, then composite the two images in photoshop.

(I can do similar if I screen shot from the rendering image, and pasting that into Photoshop works really well, but only time saved because in that situation, the new changes were in the center of the scene so spiral rendering had them appear first. The wine bottles in the current situation are not that easily placed.).

Richard Haseltine

Not directly to a file, but if you switch to the Spot Render tool and go to Tool Settings you cans et it to render to a new window which will give you a full render of the selected area, which you can save and layer over the original image.

Scavenger

That looks like EXACTLY what I need! Thanks Richard!

JD_Mortal

Bump for love... Stumbled across this tip while looking for something-else...

This is going to save me HOURS of rendering time, where I just change small things in a scene, and normally ended-up rendering-out the whole scene again.

Of Richard's 31,647 posts... about 99.9% of them are all fruitful to production or resolutions. Man, if I had a million dollars... I'd give you like... hal... um... quar... um... well... I'd give you some undefined amount... :P

Richard Haseltine

Every little helps.

albaricoquero_e2fecfdec9

I've found a great way to render in huge resolution (10K - 15K px close-ups)  very fast by rendering partially without crashing DAZ studio
-  Create New Primitive - Plane, hide parts of the image you don't want to render under these planes leaving only the part you want to render visible, and that's it ! 
Hope this helps some-one else as well ;D

Roman_K2

Almost everyone is interested in speed, but what exactly is a "10K - 15K px close-up"?

Also my understanding is that Iray acts on ALL geometry in the scene, so blocking things with a plane won't really help.

Richard Haseltine

A close-up image of something that is 10,000 to 15,000 pixels across I guess.