Various rendering choices? -- Challenge!

liam887

yeah that halo project sure is a labour of love lol thanks. Havent done much to the new mombassa scene for a while but ill get round to it eventually.
Yeah its two superimposed spheres slightly offset from each other to give a blurry effect. One was glass and the other a steel texture both with HDR lighting.
Still a long way off learning to render which is very irritating as ive got drives full of hundreds of models especially my halo ones but nothing to do with them. Im slowly learning kerk but keep hitting blanks. I cant for the life of me find any materials for my scifi models, ive downloaded them all form the kerk website but there are only a few and havent found a website out there with materials . Looks like ill have to work out how to make my own! eek

These where the two renders form kerk:
and this is what im trying to render at the moment but struggling on finding suitable materials if anybody knows a suitable kerk materials library let me know!

glass weave.jpg

metal weave.jpg

20091122180633_56m29s copy.jpg

liam887

well the render turned out very grainy so i dirtied it up a bit in photoshop so it looked like I had intended it to look like that lol, ive been messing about fir the past hour with the settings and ive put another render in but looks like it will be an overnight job as its only on 4% ray tracing! ill post the results tomorrow night fingers crossed they will come out ok, ive also put depth of field in but its really slowing the render down

TaffGoch

Liam,

I like the "illustration" qualities of the second image.

[EDIT: I hope that Starfleet shipyard is on an asteroid! (No gravity to contend with.) ]

-Taff

TaffGoch

Working with Kerky camera f-stop settings ("Scene> Camera" menu,) I eventually got the amount of depth-of-field blur that I was seeking:

f/3.5
Compared to the original:

Initial render
Yeesh, this is a lot more time-consuming than looking through a camera stopped-down viewfinder!

-Taff

boofredlay

Here is another angle. I used the same lighting setup as the last one, changed the material to green gum and added a beige backdrop. I also changed the Camera F-Number to 22.

TaffGoch

@unknownuser said:

Here is another angle. I used the same lighting setup as the last one, changed the material to green gum and added a beige backdrop. I also changed the Camera F-Number to 22.

Wait, wait, wait...

I thought that higher f-stop provides greater depth-of-field. Wouldn't f/22 give you a large range of in-focus detail?

Are you positioning the camera right up against the sphere?

-Taff

boofredlay

Yes and yes. I put the camera almost dead on the sphere. I had to change the F stop to a larger number otherwise it was too blurry. On the previous one I did the camera was farther away.

TaffGoch

Thanks, Eric.

I'm glad I have some photography experience under my belt, otherwise, I wouldn't even have been able to guess.

My test renders have been with the camera at greater distance, with 135mm "lens" to reduce perspective distortion. (I assume you're using the "standard" 25mm lens.)

My last render, with which I am delighted, took a lot longer to render. I assume this is processing "overhead," due to the out-of-focus regions. I note that the anti-aliasing time went WAY up.

From the Kerkythea console:
Ray Tracing (13839 seconds) -- 3 hr, 50 min, 39 sec
Antialiasing (23945 seconds) -- 6 hr, 39 min, 5 sec
Finished in 10 hours, 29 minutes and 47 seconds
(Render settings: 1200x1200 pixels, preset "16. Path Tracing - High + AA 0.3")

Thanks, again, Eric, for your help & contributions.

-Taff

TaffGoch

I've seen a stereoscopic SU/GE model of Machu Picchu (within this forum,) but haven't seen any stereoscopic renderings.

Has anyone pursued stereo rendering? (I'm thinking this model should make a good subject.)

-Taff

Unkr3at1v

Just a try for a quick benchmark test of my father's new PC!
A quick studio setup with two rectangle lights.
Took about 40 min (800*x) in vray. Thought it would be faster.

Tomorrow I will try a glass material. That will give some nice caustics.
Also tried Jade, but I can't get that damn translucency thing to work in Vray.

Greetz, Fritz

boofredlay

Nice reflections.

notareal

@taffgoch said:

Thanks, Eric.

I'm glad I have some photography experience under my belt, otherwise, I wouldn't even have been able to guess.

My test renders have been with the camera at greater distance, with 135mm "lens" to reduce perspective distortion. (I assume you're using the "standard" 25mm lens.)

My last render, with which I am delighted, took a lot longer to render. I assume this is processing "overhead," due to the out-of-focus regions. I note that the anti-aliasing time went WAY up.

From the Kerkythea console:
Ray Tracing (13839 seconds) -- 3 hr, 50 min, 39 sec
Antialiasing (23945 seconds) -- 6 hr, 39 min, 5 sec
Finished in 10 hours, 29 minutes and 47 seconds
(Render settings: 1200x1200 pixels, preset "16. Path Tracing - High + AA 0.3")

Thanks, again, Eric, for your help & contributions.

-Taff

If you have simple lighting in KT (like one or two lights) then path tracing progressive might be the best option. Biased rendering will loose it's advantage when scene complexity rises and you use higher photon mapping options... For complex lighting MLT or MLT/BPT are better options. If you using HDR sky for lighting (and emitters), MLT might be the best option.

TaffGoch

@notareal said:

If you have simple lighting in KT (like one or two lights) then path tracing progressive might be the best option. Biased rendering will loose it's advantage when scene complexity rises and you use higher photon mapping options... For complex lighting MLT or MLT/BPT are better options. If you using HDR sky for lighting (and emitters), MLT might be the best option.

Thanks, notareal,

That is great to know, as I haven't previously seen any recommendations about which render mode is best, under various scene conditions. KT has so many options, any tips/tricks are highly beneficial. If you've got any other such tips, or can reference KT webpage/forum URLs for such, I'd love to hear about 'em.

-Taff

notareal

Tutorials master list is a good starting point and not to forget forum search

TaffGoch

Thanks, notareal, for the tutorial links. Now, all I need is a few weeks/months to read & apply it all.

My last render pleases me above all my previous renders. The more I stare at it, the more three-dimensional it looks. (Who needs those fancy 3D goggles, anyway!)

What a great program Kerkythea is, and what great help and inspirational ideas you guys provided.

-Taff

Chris Fullmer

Looks good Taff. I can't get my eyes to uncross....but oh well. It probably looks better than how my face used to look

TaffGoch

Stereo: View cross-eyed
Initial experiment with KT stereo-image production. View by crossing your eyes, until the two images superimpose in the center. (It will look like 3 images in-a-row.) Concentrate on the center image, until it comes into focus.

I used SketchUp to produce two "scenes," which merge into KT as two cameras. (Getting the spacing is tricky. You don't want to overdo the angular separation. It is supposed to mimic the angular separation of your eyes, so camera distance is also a factor.)

-Taff

dale

@taffgoch said:

[attachment=0:31w8a5i7]Stereo_Weave_01.png[/attachment:31w8a5i7]
. View by crossing your eyes, until the two images superimpose in the center. (It will look like 3 images in-a-row.) Concentrate on the center image, until it comes into focus.

-Taff

I find a few beer works well too!

olishea

that stereo view is amazing!! looks like avatar!!

seriously impressive but my eyes hurt!

notareal

@olishea said:

that stereo view is amazing!! looks like avatar!!

seriously impressive but my eyes hurt!

Lucky you! I think I have some wiring problems - I never been able to see these kind of "3D" images. No matter how much I try to focus... de-focus or what ever. But different 3D glasses do usually work fine.