first try..some questions!

[hiro]

ok,, so after tweaking existing files, i bring myself to do my own scene:

most materials are just converted, p.e the watern, i like this.
but i dont like the ground material.

i have problems with the AA no idea how to do it right. can somebody help? that would be great!

Also ther are still some blotches on the balustrade, how can i make them disapear?

And what does the F-Number on the phys.camera do and means?

Rendersettings:

Phys.Camera:
F- Number: 8
Shutter speed: 40
iso 300

GI
Prim: Irr.Map. -3/ -1
Sec: Light Cache

AA
adaptive DMC 1/2/0.001

On my finish Rendering, there is no information-line (rendertime, vray version) , where can i make it appear?

thanks in advance!





http://www.digitalshapes.de/showroom/in_03.jpg

heres the file:



http://www.digitalshapes.de/showroom/in_test.zip

[Tong]

where can i make it appear?

VrayBridge - Options - Miscellaneus options - Stamp Vray informations
check it.

[glass.use]

nice one.. im gonna try to make it better then upload the file back again :)

[nycL45]

Hiro, the F-number is from real cameras with settings and is the f-stop or aperture (lens opening) number. You are using f8 which is more for bright light - outdoors. Indoors would be something like f4, f2.8, f1.4, etc.

The smaller the f-number, the larger the lens opening (more light allowed to hit the film) and, of couse, the larger the number, the smaller the aperture or openning size (less light allowed in).

The f-number can be used together with the ISO (film speed, 64, 100, 200, 400, etc.) and lens speed (1/x sec., x=60, 125, 250, 500, etc.) to get the right light in your rendering.

HTH

[Tong]

And what does the F-Number on the phys.camera do and means?

You realy have to buy fotobook ;-) or just small Canon PowerShot ;-)

http://en.wikipedia.org/wiki/F-number

http://www.spot3d.com/vray/help/150R1/examples_vrayphysicalcamera.htm


Lowerring the f-number value will actually make the image brighter. Thus, the camera aperture is being opened, so more light is absorbed.

In reverse, increasing the f-number will make the image darker, as the aperture is being closed.

[hiro]

ok, thanks for explanation!

[Fluffy]

For your AA problems, put your values back to 1x4 for adaptative DMC, at least. This will get as smoother result for this algorythm (otherwise, you would need to use a strong filter to blur the pixels out).

In any case, since you don't have much blurry effects in there, you should use the Adaptative Subdivision method, which should be faster in this case.
Don't forget to activate Subpixel mapping and Clamp Output in the color mapping options too, to avoid aliasing on high contrast areas.

For your blotches, increase the interpolated samples and the hemispheric subdivisions as well.
If this is still not enough (it should), decrease the intensity threshold to give the GIs more passes to delete these blotches.
Be careful though, all these options will increase your render times.

[cogombo]

Don't forget to activate Subpixel mapping to avoid aliasing on high contrast areas

This is the definitive AA option!! Thanks for the tip! (I was searching how to avoid aliasing on high contrast areas touching the AA setting without obtaining results)!!

Why is this option disabled by default?

[vlado]

Why is this option disabled by default?Because, while it will give you better AA, the result is not, strictly speaking, entirely correct. Even so, it is a useful option :-)

Best regards,
Vlado

[hiro]

here's an update:
now its looking better.
the bloches on the balustrade (see the first post) depends on an geometrical mistake. i changed it.
i changed AA to adaptiv sub. ( hint form fluffy, thanks)
f number to 5 iso to 200 for less brightness.

for me its a better image now, not perfect, but i'm working on it!

oh, i see: the DOF is too stong, i did it as postwork in PS, the DOF in Vray is my next chapter!! :?

greetings

http://www.digitalshapes.de/showroom/in_04.jpg

[d3d-design]

if using DOF be sure you changed the cinema-units to "cm"

Nice render! =)

[nycL45]

What a difference these adjustments to the settings make! Looking good.

[hiro]

New Scene, new Try:

AA
Adaptiv Sub. 1/2

GI
Prim: Irrad. -3/0, Hemisph: 70 / Interpol Sampl. 30
Sec. Lightcache

Colormapping
HSV Exp.
Dark Multipl 1.5 bright Multi. 1 Gamma 1
Subpixel mapping ON

Camera
ISO 250
Shutter Speed 200
F-Number 4
I use White Balance.

The Ceiling an the Chair in front is taken from another testscene, here from the forum

There are still some blotches on the ceiling, but all in all i am happy about it.

maybe the rendertime could be shorter ( rendersize: 800*600)

any suggestions?

Greetings


http://www.digitalshapes.de/showroom/testscene.jpg

[Jesp]

Concerning the first scene.

Can't help think of tin foil or something when I look at the water, not so much water. But that's just me :wink:

Other than that I think it's all very good.

[glass.use]

great progress hiro.
and thank you for replaying to my email

[hiro]

thank you glass.use.
hope you can work well with the scene