glass vs transparent plastic questions

[flipside]

Hi,

Take a look at this image:




1. I can't get rid of the noise in the red circle. I'm using adaptive QMC AA 1/4 with QMC sampler noise threshold to 0.002 (0.001 doesn't remove the noise).


2. It's supposd to be plastic, but I think it looks more like glass. Any tips on how to make it look more like plastic? Note that the model is a double sided bowl, it's not one thick piece of material, there's air in between the two sides.


3. Can you see what the blue things are?


Kind regards,

wouter

[percydaman]

i would look at maybe giving your plastic material some specular highlight...plastic is easily scratched, or thats how people are used to looking at it, so try and recreate that.

[analogueWay]

I read the title, looked at the picture, and thought, "Yeah, his glass does look like plastic. It doesn't look like glass at all." So, I guess you are successfull there - as far as my perception goes.

Good call on the highlight, Shane. Moving the diffuse color more toward white could also help with the look you want. Right now, it looks like a hard polycarbonate (I think it looks great). With more of a specular highlight, white diffuse and maybe a little white fog it would probably look more like plexiglass. That's just a guess, though.

I had some noise issues in an animation I am currently working on and I didn't get them to go away until I went from settings of 1/4 so settings of 1/8. The render times got pretty long, so I found a good middle ground with 1/6 and called it adequate.

In case I wasn't as clear as your plastic, those are the Adaptive QMC settings.

Have you tried Adaptive subdivision?

-Jeremy

[analogueWay]

I forgot #3.

Are they... low-poly marbles?

[percydaman]

no they're chiclets...

[RErender]

real time jelly beans?

For plastic I like a slight fog and maybe lower the refraction amount a bit plastic is often not as clear as glass

[Da_elf]

looks like those things found in the bottom of fish tanks

[DaForce]

Mmm try using cook variable and AA adaptive QMC 1/4

Fixed a similar problems on my glass cups.

Well plastic usually isnt as reflective as glass, and the reflections can be somewhat blurred as well. Plus usually lots of scratchs, finger prints...etc. I have a few good finger/hand print maps that work well on glass/plastic/metal. And yeah plastic can be a bit foggy.

How did you fill the bowl with the little blue things. reactor....or was it BY HAND?!?!? crazy

[TRGraphics]

Viagra, or so I've been told it's blue like that, I really couldn't say for sure.

I think a little blurrier reflections and you'll be there for plastic.

[flipside]

Hi all!

Well I think it's more like glass because of the really dark refractions. I took some pics of glass and plastic kitchn objects, and that helped me a lot. Indeed it needs less refraction, slightly blurred, and a bit of a haze in refractions, plus maybe a very slight bump to create imperfectness of refraction. I can't use scratches here, it should look very clean & new

Using white color for diffuse, and a very light grey for refraction did the job. But what really helps is a bit of selfluminance. I've put a falloff map in tthe diffuse slot, with an output map on the sides. That results in a very subtle but nice effect.

The blue things are small fake hard plastic ice 'balls' filled with that blue stuff like here but in very small versions:


I filled in manually! (I'm crazy dude)

I can't show the whole pic, maybe in a year or so...

Thanks for the replies!

wouter