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Op 19/08/2020 om 19:52 schreef MichaelJF:
> Hi Thomas,
> if you look at the photography from the wikipedia you will notice a very
> small area of white reflections from the sun from the horizon to the
> middle of the reflections at the sea. But I overlooked that in my image
> I have a very different angle (sun and camera are at a very lower level)
> between sun and camera. If I lift the camera in this scene from y=1 to
> y=10 POV displayed the white reflections at the sea. In my setting they
> coinside to happen at the land area. Sorry that I led you on a wrong
> track. But many thanks anyway.
>
My goodness! I confess I can hardly see that narrow band and without you
mentioning it I would have missed it entirely. That is another kettle of
fish indeed. ;-)
--
Thomas
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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
Post a reply to this message
Attachments:
Download '20201020_thelonelyswan.jpg' (658 KB)
Preview of image '20201020_thelonelyswan.jpg'
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Le 2020-10-20 à 13:05, MichaelJF a écrit :
> 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,
>
> 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.
>
Sun rise tend to have a clearer sky and more ground fog.
Sun set tend to not have any fog, but dirtier sky with more smoke and
air borne dust.
This is definitely a Sun rise.
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Am 20.10.2020 um 20:38 schrieb Alain Martel:
> Le 2020-10-20 à 13:05, MichaelJF a écrit :
>> 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,
>>
>> 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.
>>
> Sun rise tend to have a clearer sky and more ground fog.
> Sun set tend to not have any fog, but dirtier sky with more smoke and
> air borne dust.
>
> This is definitely a Sun rise.
Thanks and yes, I observed this kind of fog in the morning at the
moselle first.
Best regards
Michael
Post a reply to this message
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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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MichaelJF wrote on 20/10/2020 19:05:
>
> Render took 12 days, 17 hours and 25 minutes at an Intel Core i9@3.6 Ghz
> using all 16 Threats.
>
> Best regards
> Michael
>
Almost two weeks but well spent: it's an idyllic scene!
Paolo
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Am 21.10.2020 um 09:23 schrieb Paolo Gibellini:
> MichaelJF wrote on 20/10/2020 19:05:
>>
>> Render took 12 days, 17 hours and 25 minutes at an Intel Core i9@3.6
>> Ghz using all 16 Threats.
>>
>> Best regards
>> Michael
>>
>
> Almost two weeks but well spent: it's an idyllic scene!
>
> Paolo
Many thanks, Paolo! I think sometimes a longer break - not by choice in
this case, it was a headcrash - gives some room for new ideas and
improvements. I like the final image much better then the first approach.
Best regards
Michael
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Am 21.10.2020 um 08:35 schrieb Thomas de Groot:
> 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.
>
Hi Thomas,
many thanks for your compliment. I'm not an experienced photographer but
I remember that professional photographers use white canvasses to
reflect the light of the sun or their flashlights especially in studio
ligthing behind or beside the camera. May be I invented the wheel again
here.
To switch media on or off in radiosity scenes depends on the scene and
the media used IMO. Having emitting media in a dark room one will like
to switch it on to illuminate the darker areas of the scene by the
media, e.g. a candle. Scattering media in bright light produce to much
reflections and the feature is better turned off. I think one cannot
give a generall guideline here. May be one can consider in a future
version of POV to implement a continous approach instead of the on/off
we have actually.
Best regards
Michael
Post a reply to this message
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Op 21/10/2020 om 18:14 schreef MichaelJF:
> many thanks for your compliment. I'm not an experienced photographer but
> I remember that professional photographers use white canvasses to
> reflect the light of the sun or their flashlights especially in studio
> ligthing behind or beside the camera. May be I invented the wheel again
> here.
>
It works, and that is the main purpose indeed. Initially, I thought that
it was almost heresy to do such a thing when using radiosity, but I soon
learned to think out of the box and just do what I thought best. :-)
> To switch media on or off in radiosity scenes depends on the scene and
> the media used IMO. Having emitting media in a dark room one will like
> to switch it on to illuminate the darker areas of the scene by the
> media, e.g. a candle. Scattering media in bright light produce to much
> reflections and the feature is better turned off. I think one cannot
> give a generall guideline here. May be one can consider in a future
> version of POV to implement a continous approach instead of the on/off
> we have actually.
>
Yes, I agree.
--
Thomas
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On 10/20/20 1:05 PM, MichaelJF wrote:
> Am 22.02.2019 um 20:04 schrieb MichaelJF:
>
> Render took 12 days, 17 hours and 25 minutes at an Intel Core i9@3.6 Ghz
> using all 16 Threats.
>
Ouch. Let's see on my two core that would be... :-)
It's a very nice image!
Bill P.
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