Yuk, need to render into a bigger file format for printing

F.ip2 · Post by **F.ip2** » Thu Mar 22, 2007 4:25 pm

Hi

need to create a high res image of my tee server I created.
A 1280 x 1024 image is still not noise free after 18 hours.

What would you suggest to start with in terms of render settings for
Indigo to speed up rendering while having also a good realism?

Claas

BbB · Post by **BbB** » Thu Mar 22, 2007 6:44 pm

Mmmh, patience... and put Max Num Consec Reject at 50. But seriously, with images of that size (I must do my renders at a min of 2400x1800), you're unlikely to ever get fully rid of the noise unless you let them cook for weeks or you have a render farm to hand.

mrCarnivore · Post by **mrCarnivore** » Thu Mar 22, 2007 9:12 pm

What effect does "Max Num Consec Reject" really have?

And how does changing it affect render time and quality?

BbB · Post by **BbB** » Thu Mar 22, 2007 9:23 pm

I can't really answer that. Lower figure means renderer is more biased, which should affect overall quality but I don't know exactly how. I haven't noticed much of a difference at 50 but images cook noticeably faster. I'd also be interested in knowing what the exact effect is...

Kram1032 · Post by **Kram1032** » Fri Mar 23, 2007 2:44 am

The quality is better on images, that are less biased, but as mentioned, the others are getting noisefree, much faster...

I think, it has something to do, with, how indigo shoots the photones...

zsouthboy · Post by **zsouthboy** » Fri Mar 23, 2007 3:37 am

It's simply a waiting game.

What are you rendering your scene on? I have a (growing) server farm at home, myself.

Also, check your material settings - if you have any materials with cauchy-b-coeff > 0, if you have diffuse/phong materials with > [0.9, 0.9, 0.9], if you have SSS materials - your render time will suffer.

Quick thought - 1280x1024 is an odd size for printing - what are you planning to do?

mrCarnivore · Post by **mrCarnivore** » Fri Mar 23, 2007 3:39 am

zsouthboy wrote:if you have diffuse/phong materials with > [0.9, 0.9, 0.9] your render time will suffer.

? Why is that?

Deus · Post by **Deus** » Fri Mar 23, 2007 3:57 am

Because light bounces longer before ray intensity is below cutoff threshold. (basically the reason)

Kessi · Post by **Kessi** » Fri Mar 23, 2007 7:49 am

One way to get better looking images is to use a noise removal software. GREYCstoration for example.

Kram1032 · Post by **Kram1032** » Fri Mar 23, 2007 9:59 am

I don't know this prog, but isn't it due to quality loss?

@Deus: One of the best explanations, you wrote, in Indigo forums, yet

You're learning!

zsouthboy · Post by **zsouthboy** » Fri Mar 23, 2007 11:18 am

Don't use noise removal software. Period. Either deal with the noise, or render longer.

Deus · Post by **Deus** » Fri Mar 23, 2007 6:53 pm

thx Kram

Kram1032 · Post by **Kram1032** » Sat Mar 24, 2007 5:53 am

Zom-B · Post by **Zom-B** » Sat Mar 24, 2007 8:15 am

zsouthboy wrote:Don't use noise removal software. Period. Either deal with the noise, or render longer.

if you render in a big size for printing a noise removing program IS a good idea, because the indigo noise still stays not bigger than singel pixels. By Printing in 200 to 300 DPI and a low noise removement via NeatImage (not free, but worth each cent!!) will save you long render times!

just test it dude!!!

zsouthboy · Post by **zsouthboy** » Sat Mar 24, 2007 2:26 pm

ZomB wrote:
zsouthboy wrote:Don't use noise removal software. Period. Either deal with the noise, or render longer.
if you render in a big size for printing a noise removing program IS a good idea, because the indigo noise still stays not bigger than singel pixels. By Printing in 200 to 300 DPI and a low noise removement via NeatImage (not free, but worth each cent!!) will save you long render times!

just test it dude!!!

IMO of course - I'm also a digital photographer - I've printed more 20x30"s than most people.

Grain or noise isn't seen in the final print. Seriously.

The detail lost from the slight high frequency smearing of NI, or NN, or any of the noise reduction programs IS visible, though.

(shooting a 4 MP Nikon D2h, so I know what noise is, believe me:D)