V-ray Raw Image to HDRI [test]

[Jackson_cg]

Re: V-ray Raw Image to HDRI [test]

Sorry to flatly contradict you, but Photomatix is specifically designed to create 32 bit HDRIs from multiple differently-exposed 8 bit photographs - their homepage makes that pretty clear: http://www.hdrsoft.com/ It can export out to 8 bit, but it natively saves as 32 bit. PS can also do this, but personally I prefer the Photomatix workflow for combining LDRs into HDR format while using PS to do any HDR editing.

I just changed the image from 32 bit to 8 bit under Image>Mode in PS without altering Exposure or Gamma (I'd already adjusted these before).

Could you just post a link to your exported VRay HDRI render so I can have a look at it in PS?

[40th]

Re: V-ray Raw Image to HDRI [test]

I meant that that's the goal of Photomatix for me (my use of it). Sorry for not being clear on it, I know what it's capable of.
Link to vray hdr output

[Jackson_cg]

Re: V-ray Raw Image to HDRI [test]

Ahhh, ok that's what you meant, now I understand.

I'll have a play around with your HDRI.

[nomeradona_cg]

Re: V-ray Raw Image to HDRI [test]

ihave done also the same thing before using 5 podium render images and i share it at sketchucation. i have also used photomatix to create a hdri effect and truly so the effect is unusual. the thing even in using photograph i prefer photomatix tone mapping sliders..

on the other hand the effect is not as noticeable as using photograph and this perhaps the point of damien with rendered vray. nevertheless i found it as another way to explore post processing.

[Jackson_cg]

Re: V-ray Raw Image to HDRI [test]

Does Podium not save out renders as hdr or exr?

[Jackson_cg]

Re: V-ray Raw Image to HDRI [test]

40th,

This is your HDRI, only adjustment was decreasing gamma to 0.30 in PS and converting to 8 bit. For some reason I've never really understood, adjusting the exposure in PS of rendered HDRIs doesn't have anywhere near the same effect as adjusting the exposure of downloaded HDR photographs, or at least it certainly doesn't simulate different exposure LDRs. ??? Usually a combination of Gamma and Exposure adjustment (and often a little desaturation) is required to get a similar result.

[40th]

Re: V-ray Raw Image to HDRI [test]

Jackson,

Your PS outcome looks better than the raw file, but not good as the photomatix 'Detail enhancer' tool.
I think it's because ps only adjusts gamma and exposure, while photomatix combines the Highlights and shadows from high dynamic range (that the HDR includes) into one image. It's difficult for me to explain, but i hope it makes sense.

Thanks Jackson for participating on this.

[Jackson_cg]

Re: V-ray Raw Image to HDRI [test]

LOL, I didn't mean this to turn into a competition...but...

Can you post your example of the Photomatix "Detail Enhancer" adjusted image for comparison? It's impossible to compare just going by description!

I feel like we're talking at cross purposes here- my point from the beginning has been that you can edit HDRIs in PS in exactly the same way as in Photomatix and in many many ways which Photomatix cannot. Whether anyone agrees that my image is "better" than yours isn't really relevant, my point is that with a 32 bit render from VRay and Photoshop you can adjust anything that it is currently possible to do with 32 bit images and editing software. Photomatix may well automate some actions a little more easily than PS, but it certainly can't do anything that PS can't in terms of editing HDRIs. As I said before Photomatix was made primarily for combining multiple 8 bit images into a 32 bit image (I first used it 3 years ago), if you've already got a 32 bit image and Photoshop then it's just an extranous step in the workflow...

...IMO.

Have a great weekend,
Jackson

[nomeradona_cg]

Re: V-ray Raw Image to HDRI [test]

Does Podium not save out renders as hdr or exr?

Yes they do, but just to remove the banding of colors. yes indeed its 32 bit. but that is not really the case. but the case i mention is more on using the post processing technique by photomatix rather than on making the HDR output.

[40th]

Re: V-ray Raw Image to HDRI [test]

Haha competition...
It's not, i look at it as search of the best way to get HDR looking image.

here's the comparison

Photoshop

40th,
This is your HDRI....

Of course it can be adjusted more, but i think it looks more vivid.

Photomatix

The reslt:
Img No' 5

[dalomar_cg]

Re: V-ray Raw Image to HDRI [test]

Photoshop sucks for tonemapping. It technically does not have local TMOs only global. You at least have some control if you use the curves option, so you can do some local adjustments, but it still has a broad brushstroke kind of feel and there's not that much control compared to what's available in Photomatrix or some of the others.

BTW, the HDRI Handbook is really an amazing book and worth it if you want to get into this more

http://www.amazon.com/HDRI-Handbook-...4902963&sr=8-1

[sepo100]

Re: V-ray Raw Image to HDRI [test]

Photoshop pp from your .hdr. http://[IMG]http://img134.imageshack....jpg[/img]

[sepo100]

Re: V-ray Raw Image to HDRI [test]

And desaturated version

[edonk]

Re: V-ray Raw Image to HDRI [test]

Sepo, that desat version is pretty sweet!

[sepo100]

Re: V-ray Raw Image to HDRI [test]

Thanks Edonk.
The point of the excersize was to see how much info Vray .hdr render contain. It contain actually a lot of info. The amount of detail and clarity is contained well in the image IMO.
The first image was attempt to produce cheezy type .hdr image one sees a lot around on internet.