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Thomas de Groot schrieb:
> I think the shade is looking good. I am however, troubled by the focal blur
> (?) which made me wonder if something was wrong with my eyes. I have trouble
> to see the scene, with the exception of the lamp.
>
> Thomas
>
>
No trouble at all here. Must be something with your eyes.
;-)
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"Hans Fink" <mas### [at] pecos no spam de> schreef in bericht
news:47d53780$1@news.povray.org...
>>
> No trouble at all here. Must be something with your eyes.
>
> ;-)
Yes, I forgot my POV-glasses..... :-)
Thomas
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"Kirk Andrews" <kir### [at] tektonart com> wrote:
> Looks good. What method are you using?
Thanks. It uses double illuminate and an area light + radiosity, with patterns
of varying ambient finish on the shade. Nothing too different than my prior
lights really.
-The Mildly Infamous Blue Herring
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"Thomas de Groot" <t.d### [at] inter nlDOTnet> wrote:
> I think the shade is looking good. I am however, troubled by the focal blur
> (?) which made me wonder if something was wrong with my eyes. I have trouble
> to see the scene, with the exception of the lamp.
Thanks. Perhaps I was too aggressive with the blur, I don't use it all that
often. Or possibly its the scale of the scene, its at 1cm = 1 pov unit. It
uses the standard POV-Ray focal blur:
#declare Focus = <-30, 120, 170>;
camera {
location <-50, 150, -50>
up y
right x * image_width/image_height
look_at Focus
#if(Use_Focal_Blur)
aperture 9
blur_samples 400
focal_point Focus
confidence 0.91
variance 1/2000
#end
}
Part of the reason for the rather high settings was that I was trying to get rid
of that graininess on the mirror border, which it largely failed to do.
-The Mildly Infamous Blue Herring
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"Blue Herring" <bhe### [at] tinfoilcat com> schreef in bericht
news:web.47d584cd76857e91ce5ce3790@news.povray.org...
>
> Part of the reason for the rather high settings was that I was trying to
> get rid
> of that graininess on the mirror border, which it largely failed to do.
>
Maybe that would disappear with (higher) radiosity settings? Instead of
focal blur.
Thomas
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"Thomas de Groot" <t.d### [at] inter nlDOTnet> wrote:
> Maybe that would disappear with (higher) radiosity settings? Instead of
> focal blur.
Hmm, not sure, I thought I had fairly high settings, but perhaps I'm off
somewhere. I'm using the two-pass method with the settings:
pretrace_start 0.32
pretrace_end 0.02
count 400
nearest_count 5
error_bound 1
recursion_limit 3
low_error_factor 0.5
gray_threshold 0
minimum_reuse 0.015
brightness 1
adc_bailout 0.01/0.4
normal off
media off
-The Mildly Infamous Blue Herring
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Blue Herring nous apporta ses lumieres en ce 2008/03/14 14:26:
> "Thomas de Groot" <t.d### [at] inter nlDOTnet> wrote:
>> Maybe that would disappear with (higher) radiosity settings? Instead of
>> focal blur.
>
> Hmm, not sure, I thought I had fairly high settings, but perhaps I'm off
> somewhere. I'm using the two-pass method with the settings:
>
> pretrace_start 0.32
Changing the pretrace_start usualy have little to no effect. Keep the default of
0.08.
Changing by some small value may, in some cases, get rid of some artefacts near
corners.
> pretrace_end 0.02
Default value.
Try reducint this to 0.01, 0.005 or 0.0025
> count 400
Maybe a larger value here? Try 600 or 800.
> nearest_count 5
That's the default value.
You can go up to 20. Low effect on render time, can greatly improve end result.
> error_bound 1
> recursion_limit 3
Default value.
> low_error_factor 0.5
Meybe try a somewhat smaller value. Will take more time on the final pretrace step.
> gray_threshold 0
Default value.
> minimum_reuse 0.015
Default value.
You may need a value larger OR smaler. Don't go over 0.02. Don't go to small, as
smaller values will increase the render time.
> brightness 1
Default value.
> adc_bailout 0.01/0.4
That's 0.025, probably to large. Try adc_bailout 0.01/3 or 0.01/4.
> normal off
Default value.
> media off
Default value.
>
> -The Mildly Infamous Blue Herring
>
Every time you use a default value, you can skip that option.
--
Alain
-------------------------------------------------
Keep your boss’s boss off your boss’s back.
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Alain wrote:
>> pretrace_start 0.32
> Changing the pretrace_start usualy have little to no effect. Keep the
> default of 0.08.
> Changing by some small value may, in some cases, get rid of some
> artefacts near corners.
I had some vague notion that it helped with sample distribution, but it
was likely my imagination.
>> pretrace_end 0.02
> Default value.
> Try reducint this to 0.01, 0.005 or 0.0025
>> count 400
> Maybe a larger value here? Try 600 or 800.
>> nearest_count 5
> That's the default value.
> You can go up to 20. Low effect on render time, can greatly improve end
> result.
Gotcha. I was shooting for more defined shadows than I got, so I didn't
really want to average them out too much.
>> error_bound 1
>> recursion_limit 3
> Default value.
>> low_error_factor 0.5
> Meybe try a somewhat smaller value. Will take more time on the final
> pretrace step.
>> gray_threshold 0
> Default value.
>> minimum_reuse 0.015
> Default value.
> You may need a value larger OR smaler. Don't go over 0.02. Don't go to
> small, as smaller values will increase the render time.
Gotcha.
>> brightness 1
> Default value.
>> adc_bailout 0.01/0.4
> That's 0.025, probably to large. Try adc_bailout 0.01/3 or 0.01/4.
Thanks, I'll bet this isn't helping. It didn't seem right, but I didn't
really know where to go with it.
>> normal off
> Default value.
>> media off
> Default value.
>>
> Every time you use a default value, you can skip that option.
>
Thanks for the advice, I appreciate it. I usually put all the options
in there deliberately, even though its often redundant. My memory of
the defaults is fuzzy, so I like to be sure I know exactly the value I'm
using. I also like to see all the values, for me it makes it easier to
tweak them around. Lastly, I think some part of my personality
distrusts default values =)
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Blue Herring nous illumina en ce 2008-05-21 13:36 -->
> Alain wrote:
>>> pretrace_start 0.32
>> Changing the pretrace_start usualy have little to no effect. Keep the
>> default of 0.08.
>> Changing by some small value may, in some cases, get rid of some
>> artefacts near corners.
>
> I had some vague notion that it helped with sample distribution, but it
> was likely my imagination.
>
>>> pretrace_end 0.02
>> Default value.
>> Try reducint this to 0.01, 0.005 or 0.0025
>>> count 400
>> Maybe a larger value here? Try 600 or 800.
>>> nearest_count 5
>> That's the default value.
>> You can go up to 20. Low effect on render time, can greatly improve
>> end result.
>
> Gotcha. I was shooting for more defined shadows than I got, so I didn't
> really want to average them out too much.
>
>>> error_bound 1
>>> recursion_limit 3
>> Default value.
>>> low_error_factor 0.5
>> Meybe try a somewhat smaller value. Will take more time on the final
>> pretrace step.
>>> gray_threshold 0
>> Default value.
>>> minimum_reuse 0.015
>> Default value.
>> You may need a value larger OR smaler. Don't go over 0.02. Don't go to
>> small, as smaller values will increase the render time.
>
> Gotcha.
>
>>> brightness 1
>> Default value.
>>> adc_bailout 0.01/0.4
>> That's 0.025, probably to large. Try adc_bailout 0.01/3 or 0.01/4.
>
> Thanks, I'll bet this isn't helping. It didn't seem right, but I didn't
> really know where to go with it.
>
>>> normal off
>> Default value.
>>> media off
>> Default value.
>>>
>> Every time you use a default value, you can skip that option.
>>
>
> Thanks for the advice, I appreciate it. I usually put all the options
> in there deliberately, even though its often redundant. My memory of
> the defaults is fuzzy, so I like to be sure I know exactly the value I'm
> using. I also like to see all the values, for me it makes it easier to
> tweak them around. Lastly, I think some part of my personality
> distrusts default values =)
>
>
>
When I say that you can skip a parameter with default value, I never sayd that
you /must/ keep those set at default value. If keeping those help you, then keep
them.
--
Alain
-------------------------------------------------
Advertisements contain the only truths to be relied on in a newspaper.
Thomas Jefferson
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Alain wrote:
> When I say that you can skip a parameter with default value, I never
> sayd that you /must/ keep those set at default value. If keeping those
> help you, then keep them.
I understand, I think my reply was just a little unclear.
--
-The Mildly Infamous Blue Herring
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