Rendering Engines.

Patroklos

From what I have seen on the forums, Iray has the potential to allow the creation of photoreal renders if the operator has the skill. It also seems to me that there is some pressure from Daz & those selling stuff here to move in that direction.

The problem for me (and I suspect many other ordinary users) is that Iray is so slow. I could get an acceptable render in 2 hours on 3delight and around 10 to 20 hours on Iray. I have an i5 Apple Desktop 6 months old. (no Nvidia card!) God knows how long an Iray render will take on an ancient computer.

I don't want to use both render engines as I have enough trouble learning correct settings on just one.

From a practical point of view I should use 3delight because five to ten times longer renders are a real pain. At the same time, if 3delight will slowly die, I don't want to waste effort learning to use it. Also, I think from what I have seen so far, I will like using Iray.

It would likely help a lot of people like me if recommendations on settings to improve speed of rendering using Iray were to be published somewhere.

Has anyone here tried the non Photoreal side of Iray? Any thoughts on how much faster it is, and what the quality of the renders are?

Also, how about a press button way of converting shaders from 3delight to Iray and vice versa? I would pay for that.

Any thoughts or suggestions?

scorpio

In some ways Daz have given you a 'press button converter', most surfaces, not all by any means especially those using certain shaders, convert to Iray with little tweaking required, the other way around seems quite different what I have seen of Iray optimised settings they don't convert to DS at all well.

8eos8

Iray can go really slow if you don't have enough light in your scene. In CPU-only mode it should be comparable to 3Delight, not 5-10 times slower. Maybe you could post a screenshot of how you have your scene set up?

Also the surfaces will get converted automatically when you start the render (it'll be the same result as applying Iray Uber Base for each one). You only need to convert them manually if you don't like the results of the conversion or if you want to tweak Iray-specific parameters like roughness, metallicity, etc.

jestmart

Sorry but Iray simply is slower than 3Delight for us users that have older hardware and use 'trickery' that only the bias render engine can provide.

Takeo.Kensei

You should stick to 3delight if you don't need photoreal. Iray will never beat 3delight in that field. And I don't think 3delight will be abandoned yet

Patroklos

8eos8 said:

Iray can go really slow if you don't have enough light in your scene. In CPU-only mode it should be comparable to 3Delight, not 5-10 times slower. Maybe you could post a screenshot of how you have your scene set up?

Also the surfaces will get converted automatically when you start the render (it'll be the same result as applying Iray Uber Base for each one). You only need to convert them manually if you don't like the results of the conversion or if you want to tweak Iray-specific parameters like roughness, metallicity, etc.

Its a pretty well lit scene, just the sun.

I'm rendering the same scene using Interactive, with 90 minutes gone is looks faster with little or no discernible difference in quality.

Patroklos

2 renders, same scene, same light, both Iray, Photoreal has more grainy skin but more detail in the hair than Interactive. Oddly, daisies in the grass are much clearer in the 2 hour Interactive render than the 24 hour Photoreal render.

Mattymanx

Apples and oranges. Each require their own techniques to get good results and results vary from person to person

Patroklos

Mattymanx said:

Apples and oranges. Each require their own techniques to get good results and results vary from person to person

Would you like to expand on that? Maybe strength & weaknesses of each? Thanks

Mattymanx

Patroklos said:

Mattymanx said:

Apples and oranges. Each require their own techniques to get good results and results vary from person to person

Would you like to expand on that? Maybe strength & weaknesses of each? Thanks

I was just making a general statement.

One could research Biased and Unbiased render engines to have an idea

There is TOO much to compare between the two.

Oso3D

There is also a lot of variation in each.

I can make an ethereal and soft looking render with Iray. I can make a hard and realistic, sterile-looking render in 3Delight.

I mean, look at Stonemason's stuff. A lot of the renders, you can just TELL it's Stonemason's ... the style, the lighting, the presentation.

Patroklos

Clearly it is an art, and the skill of the artist is the most important factor.