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Our last job for our customer.






3d models (sls, sledge, moon) from Stock. Santa is a photo (someone from my team .
We didn't reworked the sls models because the size of the ad was not so big ( a page in 2 newspapers) and details were not much visible.
Rendered in maxwell of course. Post in photoshop.

By the way... there was much aliasing in the high resolution render (3000 px) ... did you now why?

David Solito wrote:By the way... there was much aliasing in the high resolution render (3000 px) ... did you now why?

Definitely not expected. Do you have the MXI?

of course, but 2.4 GB... rendered with ranch.

So, when you load it up in maxwell.exe, you see the same aliasing?

I've noticed this when loading an MXI in Photoshop. More aliasing visible on some edges compared to viewing the MXI in Maxwell.

Cool idea!

I've seen such aliasing problem many times on my renderings on specific areas of too bright pixels. Decreasing exposure fixed it. I think problem is in displaying or converting 32bit images into 8 or 16 bit.

Mihai wrote:I've noticed this when loading an MXI in Photoshop. More aliasing visible on some edges compared to viewing the MXI in Maxwell.

Cool idea!

Thks!

I have not the mxi here at home but I saved all the passes one by one because it was too heavy to load the mxi in photoshop.
I saved each mulilight channel on .hdr... do you think it's the problem?

David Solito wrote:I saved each mulilight channel on .hdr... do you think it's the problem?

Definitely! First of all, HDR is not a real 32 bit file format and it causes aliasing on contrasty lines. I strongly suggest saving LDR images (PNG, TIFF...) from Maxwell for avoiding this problem. For high dynamic range, TIFF32 or EXR would be a better choice. Though, aliasing is mainly related to the tonemapping (during 32 to 8 bit conversion) so, saving out LDR from Maxwell is always better in this case.

Sorry to hear about your aliasing troubles but that's an awesome image nonetheless.

tom wrote:Definitely! First of all, HDR is not a real 32 bit file format and it causes aliasing on contrasty lines.

I'm not expert... what do you mean? I always thought the opposite and told others to use Hdr...!

Rickyx wrote:

tom wrote:Definitely! First of all, HDR is not a real 32 bit file format and it causes aliasing on contrasty lines.

I'm not expert... what do you mean? I always thought the opposite and told others to use Hdr...!

HDR is Radiance's High Dynamic Range image format based on RGBE. More information here:
http://en.wikipedia.org/wiki/Radiance_% ... age_format
http://en.wikipedia.org/wiki/RGBE_image_format

It means 24 bits Pixel value + 8 bits exponent and it doesn't have true 32 bit precision per-pixel like TIFF32 or EXR nor MXI.

Only in the Maxwell forum could someone say that HDR isn't strictly 32-bit and you believe them. Thanks Tom, point noted!