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One of the issues I have noticed is replacing the sketchup default material with one from the render, also, when selecting matte in the scene manager it fails to render as such and replaces that material with something I cannot describe.

The last image on this page. https://onedrive.live.com/?id=3B9C5A96A ... 96AA152674

When an entity in SketchUp uses the SketchUp "Default" material, it is exported to Maxwell with no material; geometry in Maxwell which has no material will use the material specified in Scene Manager > Output > Materials > Default.

The Matte material option (I assume you are referring to Scene Manager > Materials > Globals > Matte) operates as described here; and indeed, it appears you have enabled this on some materials, and it is causing your background (appears to be a gradient HDRI) to show, instead of the objects to which those materials are assigned.

Did you note the last image on the page?

When I looked, the last image was this one:



In the current last image, it appears that Matte is still enabled on the chair back material:

Matte has been disabled on all of the materials it was enabled on.

It just looks like I'm seeing the background through the chair backs. Squashing the levels, I can detect the same banding there (you may want to check the Interpolate option in Scene Manager > Environment > Image Based, though this is enabled by default, so it may just indicate use of a low-quality HDRI) , as in the environment outside the windows.

I have altered the material and tried again seems ok. Still a frustrating sequence of trial and error but one day I too will be able to wash behind my ears. Or will I ???

What would be the proper method for obtaining gloss paint finish? Thanks.

There are many ways, the simplest being to use the Automatic material character with a lower Roughness value (say somewhere in the 5-15% range); you could also try one of the Opaque, Plastic or Lacquer characters.

Thanks, I will try reducing roughness, the plastic and lacquer are far too bright, almost metalic.

The lacquer character, especially, is quite subdued, so I would take that as possible indication that something is not set up realistically (scene scale, emitter power, camera exposure, use of over-bright colors, etc).

I have an HDRI but no show in the render, glass is grouped and treated as per instructions (Thanks JD). I have used an EV setting for F stop and shutter speed and film is Agfacolour Futura 400.

Anybody there?

I cannot really speculate without more details. I can only recommend simplifying things to look and find where the problem is, or uploading a minimal .skp file to your onedrive, which demonstrates the issue, so I can take a look and tell you what is happening.

Fair enuffski, ta. Today I am trying to get my car sorted so later in the week.