> Thanks for the suggestion, darkening the outside does seem to fit very well
> with the theme of the picture: I've given the light from the outside light a
> lot of fade so that it's presence doesn't give that bright flood-lit effect
> of the previous example. 


I'm watching this on a cheap TFT-screen, so I could be wrong, but the 
shadows still seems too bright. If you are using ambient, try turning it 
down or off, so the shadows becomes almost black.

> Something about the window frame now looks a bit
> false now though but I can't place my finger on it so can't fix it!


As I see it, the window lacks a frame :-). It only has a sash. OK, I'm 
not sure about the naming of the various parts, but usually a window has 
  fixed part mounted on the wall (the frame?) and a moving part hinged 
to the frame (the sash?) in which the glass pane is mounted. The frame 
and sash could be about the same thickness (5-6 cm) but the parts, that 
divide up the pane (muntins?) should only be about half that thickness.

Also the outside window sill should slope downwards, to avoid 
accumulating rain water, that will rot the window frame.

/Ib
-------------------
http://www.ibras.dk

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"Ib Rasmussen" <ib### [at] ibrasdk> wrote in message
news:3D6### [at] ibrasdk...
>
> I'm watching this on a cheap TFT-screen, so I could be wrong, but the
> shadows still seems too bright. If you are using ambient, try turning it
> down or off, so the shadows becomes almost black.

I see it like you, overall lack of contrast. Maybe higher assumed_gamma
would help. Active matrix TFT LCD here too, and also cheap ;-)  Anyway, I
don't think that's the reason.

Post a reply to this message

I've gone through and put "gamma 0" everywhere where it might need it!
Hopefully that'll help it. I think my moniter must be darker than most,
although I never managed to work out what the display-gamma actually is for
this machine.

I'll repost it once I've remodelled the window, I'd like to get this
contrast sorted as a contrast is an important part of the "feel" that this
picture is meant to have.

"hughes b" <omn### [at] charternet> wrote in message
news:3d6a0039$1@news.povray.org...
> "Ib Rasmussen" <ib### [at] ibrasdk> wrote in message
> news:3D6### [at] ibrasdk...
> >
> > I'm watching this on a cheap TFT-screen, so I could be wrong, but the
> > shadows still seems too bright. If you are using ambient, try turning it
> > down or off, so the shadows becomes almost black.
>
> I see it like you, overall lack of contrast. Maybe higher assumed_gamma
> would help. Active matrix TFT LCD here too, and also cheap ;-)  Anyway, I
> don't think that's the reason.
>
>

Post a reply to this message

"John Vodden" <jav### [at] gmxcouk> wrote in message
news:3d6a22b1@news.povray.org...
> I've gone through and put "gamma 0" everywhere where it might need it!
> Hopefully that'll help it. I think my moniter must be darker than most,
> although I never managed to work out what the display-gamma actually is
for
> this machine.

gamma 0? Not sure you are talking about POV-Ray and might be setting it in a
image editor instead? I meant global_settings {assumed_gamma 2.2} or more
than the 1.0 as suggested in the help and the default Insert Menu.
Have you seen the Scene Help section 5.2.2.2.2 (yes, that's the numbers)
yet? Should be able to get an idea of what to use for Display_Gamma in
pov-ray\renderer\povray.ini, although I still don't set assumed_gamma to 1.0
and either leave it out or make it 2.2 as well. It's still a confusing issue
to me too, I can't readily check image output on various monitors to see
what the changes might be.

Post a reply to this message

> I've gone through and put "gamma 0" everywhere where it might need it!


That should be "ambient 0" I hope. As hughes b writes, gamma should only 
be set once, and not to 0. I should be 2.2 for pcs and 1.0 for macs, IIRC.

You can use the attached image for a simple gamma adjustment of your 
monitor. The center of each colour field should appear the same as the 
frame, if your screen is set correctly.

/Ib

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Attachments:
Download 'gamma.gif' (3 KB)

Preview of image 'gamma.gif'

It looks like it is ambient values to me as well.

Put the following at the top of the scene file:

global_settings {
  ambient_light rgb 0
}

And then go through and pull out all of the ambient
settings in the finish part of the textures.

Aaron

Aaron Gillies
New York City
x3rxes[*]yahoo.com

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"Ib Rasmussen" <ib### [at] ibrasdk> wrote in message
news:3D6### [at] ibrasdk...
> > I've gone through and put "gamma 0" everywhere where it might need it!
>

> That should be "ambient 0" I hope. As hughes b writes, gamma should only
> be set once, and not to 0. I should be 2.2 for pcs and 1.0 for macs, IIRC.

My bad, I had "gamma" on the from brain talking about the display gamma... I
meant "ambient 0" (which is what I've put in there in response to "If you
are using ambient, try turning it down or off")

I'll play with that gamma image and see if I can get it right. Attempts I've
had with "gamma.gif" in the past to determine precisely the display_gamma of
my machine (as described in the help file) haven't seemed to work.
Currently I've got display_gamma as 2.2 (the default I believe and
recommended for PCs) and assumed_gamma 1.0 for the image.

Post a reply to this message

"Aaron Gillies" <no### [at] spamcom> wrote in message
news:3d6a3278$1@news.povray.org...
> It looks like it is ambient values to me as well.
>
> Put the following at the top of the scene file:
>
> global_settings {
>   ambient_light rgb 0
> }

Ah, I see the problem.

Help file section 6.11.2 says : "The default is a white ambient light source
set at rgb <1,1,1>"

I had assumed that it was rgb 0 if unspecified, which is apparently not the
case. It doesn't help that I seem to keep my moniter rather dark too so it
didn't show up that badly for me.

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"John Vodden" <jav### [at] gmxcouk> wrote in message
news:3d6a6a20@news.povray.org...
>
> Currently I've got display_gamma as 2.2 (the default I believe and
> recommended for PCs) and assumed_gamma 1.0 for the image.

Ah ha! ;-)

Well I just can't use that assumed_gamma 1.0, I'd have to do some extreme
contrasting of textures to use it. So I will only leave it out or use 2.2,
like Display_Gamma is set.

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Setting assumed_gamma to 2.2 was what
I did to keep the look of my older pics. Just
remember to use 1 when you begin a new scene!


--
Tim Nikias
Homepage: http://www.digitaltwilight.de/no_lights/index.html
Email: Tim### [at] gmxde

> Well I just can't use that assumed_gamma 1.0, I'd have to do some extreme
> contrasting of textures to use it. So I will only leave it out or use 2.2,
> like Display_Gamma is set.

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