Op 20/10/2020 om 19:05 schreef MichaelJF:
> Am 22.02.2019 um 20:04 schrieb MichaelJF:
>> Hi to the crowd,
>>
>> this image has still a lot of flaws (sun colour and reflections, the 
>> swan model itself, textures of the cattails) and may be limitations to 
>> media by POV. media seems to be handling color_maps or density_maps 
>> different than pigment or texture having no interpolation between the 
>> map entries but shap edges. This is what I derived in a first attempt. 
>> Rendering time was a little bit longer (3 weeks).
>>
>> Best regards
>> Michael
>>
> 
> Hi to the crowd,
> 
> here is the final image of my approach to model steam fog. Having lost 
> all the code from my first postings here, the image developed into 
> another direction, but I like it better now. May be it can need a little 
> bit higher amount of dof, but I will not change this so far. Not to hide 
> some flaws of the Xfrog trees but for the general mood of the image.
> 
> In fact, I have no idea if the images of a sunrise are very different 
> from the images of a sundown. But if I prefer a certain region of this 
> planet where this scene could be located and where I observed a similiar 
> scene several years ago, than it must be a sundown because it was a look 
> to the west. Close to the atlantic ocean a little bit north to the Dune 
> of Pilat, France. 1985, I rode a bicycle (crafted by myself and not an 
> engine) from Paris to Orleans, and then along the Loire and to Bordeaux 
> finally. I remember similiar scences from this journey.
> 
> Since swans like to order their feathers with their beaks, I posed the 
> swan in wings slightly. It was an unrigged free model I found at
> 
> https://free3d.com/3d-model/mute-swan-v1--619725.html
> 
> The author used the pseudonym "`printable\_models"'.
> 
> All plants were modelled with the trial version of Xfrog. If you work 
> through their tutorials you can create very realistic plants, but there 
> are still some flaws (obviously repeated textures exp. leafs).
> 
> In this image I used the Goldenrod-tutorial by Xfrog but placed scans 
> from a rotten one I found in a park nearby as textures. The cattails 
> (Typha latifolia) and trees (Pinus pinaster, the maritime or cluster 
> pine) I modelled with Xfrog without much help from them. The lower part 
> of the stem of the pines I modelled after their tree tutorial.
> 
> To have a little bit more light in the foreground I misused radiosity by 
> putting a great gray wall (colour White/2) 20 units (meters) behind the 
> camera to have some diffuse reflections against the sun. A white wall 
> was a little bit to bright IMO.
> 
> A very important point was to turn off the media interaction within the 
> radiosity block. In my first image here - the lost approach from last 
> year - it was turned on and And asked for a second light source. One 
> ever learns, and Ands question let to the solutionn of this riddle finally.
> 
> Render took 12 days, 17 hours and 25 minutes at an Intel Core i9@3.6 Ghz 
> using all 16 Threats.
> 
> Best regards
> Michael
> 

Good work sir. I like the mood (Sunrise indeed, as Alain already wrote; 
It is mainly a question of environmental temperature differences at 
start or end of day, I guess)

I very often use a grey wall behind the camera, in addition to 
radiosity, especially for these kind of scenes. An old photographer's trick?

The media on/off is something I have also been struggling with. It very 
much depends on the kind of output one wants to achieve (in addition to 
the quite different render time). I generally prefer the 'off' state.

-- 
Thomas

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