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Start changing pixelfilter to Cone 1.0 instead of box 0.5. If you want it even sharper use Lanczos. Higher contrast can be acheived in many ways, one is via hdri/pshop but i suspect you use alot of bounces and therefore gets a quite low contrast/foggy effect. Try to use as low number of bounces that ...

:D Yes it's indeed very much under development and we are tesdriving betas with new functionality all the time. I can agree with you on one point and that is that it's alot of work for one man. The more people who starts to use it the faster development will go. Now Grzegorz have to work with other ...

Very nice work but where does the light come from?

Also as try this as antialiasing on a limited region for a start:

adaptive Grid aa 1x
change upsample to 1 (standard is 0) and this is important.
no undersampling. (otherwise you cant choose upsampling)
If you still get broken lines or geometry missing then change AA "Thickness" size from 1 to 2 or ...

It depends of how strong indirect light you use and what AA you use. As a test try to turn irradiance caching off, set FG min100 max0, turn on undersampling 16-64 and activate fullscreen AA grid3 + Pixelfilter "cone" 1.5. If you think it gets to blurry/soft change pixelfilter "cone" to 1.0 or 0.5 ...

Not much of a secret I just rendered it with irradiancecaching off to get that fprime/maxwell look.

Thanx for your contribution! I suggest you turn up blurred reflectionsamples much more to get rid of that dotty effect.

Another version with DOF

Try to amplify gamma/exposure or photonmultiplier a bit since it's rather dark. Also try to use less bounces so the room dont get all blue from the environment or add gammacorrection to the hdri to make it less intense coloured.
Other than that it's a nice image, thanx for sharing.

Photonstab and look for multiplier (default at 1.0)

Looks like you have something there but do you really need filllights? Cant you use photonmultiplier x4 or something? If it gets too bright,pull down exsposure until the brightest parts in the room look ok and after that turn up the gamma so the shadows are as bright as you want them.

Astonishing work's from you as always...

i play with a new beta witch have drastically improved caustics from distant lightsources. This beta will hopefully be out in a few days.

[quote="Thickness-based absorbation is implemented into Kray since the surface thickness gradient works. However, the surface thickness gradient requires air polygons, and air polygons screwed up the refractions. :(
[/quote]

I havent tried surface thickness in Kray...maybe it actually work's but it ...

Ok updated version.