cannot save as .png? help!

mga sir question lang po, i just followed the vraysun and HDRI tutorial of Peter guthrie ok naman yung output pero bakit hindi pwede masave as .png yung render ko? i want to change the background kasi pero when i save it as .png, nandun parin yung sky background nung HDRI map. ganon po ba talaga when using vraydomelight as lighting? TIA mga masters!!

xiscon wrote:mga sir question lang po, i just followed the vraysun and HDRI tutorial of Peter guthrie ok naman yung output pero bakit hindi pwede masave as .png yung render ko? i want to change the background kasi pero when i save it as .png, nandun parin yung sky background nung HDRI map. ganon po ba talaga when using vraydomelight as lighting? TIA mga masters!!

--Tick "invisible" on your vray domelight settings.

cloud20 wrote:

xiscon wrote:mga sir question lang po, i just followed the vraysun and HDRI tutorial of Peter guthrie ok naman yung output pero bakit hindi pwede masave as .png yung render ko? i want to change the background kasi pero when i save it as .png, nandun parin yung sky background nung HDRI map. ganon po ba talaga when using vraydomelight as lighting? TIA mga masters!!

--Tick "invisible" on your vray domelight settings.

thanks po sa reply sir.. natry ko na and ok at nawala na yung bg pag save, problem sir my parang outline sa edges ng structure ko..

select your image (all except the background), go to Select Menu -->> Modify -->> Contract, then OK. It will strip one pixel on your image, reverse the selection then delete.

render master wrote:select your image (all except the background), go to Select Menu -->> Modify -->> Contract, then OK. It will strip one pixel on your image, reverse the selection then delete.

Ronel, ano to? PS ba to?

The vray sun is bright by default so without seeing an image of the problem, I can only guess that its the antialiasing at work or the lack of it...

Try checking CLAMP in the color mapping section of the render parameters. What it does is - stop the renderer from producing pixels brighter than RGB 255,255,255 that causes the antialiser to go funky.

Perhaps that's teh problem,

xiscon, sa photoshop mo ba nakikita ung edges pag icompose mo ung BG?Please elaborate. PS has a tendency to mess Premultiplied alphas rendered in MAX, there are many ways to go about it, but I prefer AFX to do simple comps kahit stills lang.

Elaborate first.

v_wrangler wrote: Ronel, ano to? PS ba to?

Yup in Ps, sorry i did not elaborate it well.

vraysincfilter might help too para ma-eliminate yan TS it's a common "bug" kapag gumamit ka ng exr and hdr... very evident yan lalo na sa window frames...

What bug?

v_wrangler wrote:What bug?

i put "" to say it's my way of saying it... those sparkling lines and sometimes black lines on the window frames whenever i used exr nor hdr on lighting... checking clamp and using vraysincfilter somehow make it disappear

So its not a bug, its usually user error.

As I have explained above, vray sun and vray sky are pretyy much physically correct, so if you view them from a normal camera, the default parameters will be too bright. Since vray is tryign to squeeze in floating point colors - and you are rendering 24 bits, the vbuffer is unable to process them. So clamping them down is the way to go. That's evem more simplified by that button in the same name.

v_wrangler wrote:So its not a bug, its usually user error.

noted...

mga master medyo na nosebleed po ako sa mga terms ninyo sa taas.. haha.. sa max padin po yung outline edge ng structure and nangyayari inyon kapag nakainvisible yung vraydomelight which sir cloud idea.. ok naman sana masasave ko na siya ng .png, kaso yun nga merong outline edges.. kapag i untick ko ulit yung invisible under vraydomelight, nawawala, kaso di ko siya masave ng .png nandon parin yung bg.. TIA po sa help...