djohnson129 Posted January 1, 2009 Share Posted January 1, 2009 Hello, In short, the biggest trouble I have with my composites is adding the environment background in the windows. Everything from finding an image with the correct perspective I need, to how to add that to the render. Currently what I do is do two renders, one with a green background so that I can delete it in photoshop and then place a picture below it and tweak the perspective transform till it somewhat looks ok. In the end it looks amateur and its time I learn the professional way of doing this. If anyone can refer me to any good tutorial links or have a process of your own you'd like to share I'd be more than greatful. Here's an example of one I'm working on right now. Thanks, David Link to comment Share on other sites More sharing options...
Peter M. Gruhn Posted January 2, 2009 Share Posted January 2, 2009 And you're letting a lot of non-existent green into your room. For trips to PShop, you can save your image as something with an alpha channel (like PNG). I don't know how something semi-opaque like window glass gets handled in the alpha. Then it's much easier to slap a different layer in back in PShop. You can use Max's ability to do the rendering with a specific background image. I just hit '8', but it's on the render menu too; 'environment,' I think. You can set a background image here then drag it from the button to a slot in the material editor and set map type and offset etc. Use the ability to view the background in a viewport to aid in placement. Sometimes it's easier/better/whatever to just slap the image on a billboard outside the window. I've did so with a condo which came with photos taken out the windows. Made placing and sizing (and repeating) them for effect (rather than accuracy) much easier. Link to comment Share on other sites More sharing options...
chutti Posted January 2, 2009 Share Posted January 2, 2009 this should help... http://evermotion.org/?unfold_exclusive=302&unfold=exclusive Link to comment Share on other sites More sharing options...
jophus14 Posted January 2, 2009 Share Posted January 2, 2009 I think that the best way to do this is render out your scene as is. Then render out your glass as a Region with reflection at 100%. Apply your background in PS then put your 100% reflective glass above the background layer and change the opacity until it looks right. Save each render as a .TIF because it doesn't compress the image place it'll save an alpha for you. Link to comment Share on other sites More sharing options...
djohnson129 Posted January 4, 2009 Author Share Posted January 4, 2009 Thank you all for your help! chutti- that tutorial looks very good, I'm going to go thru that after this reply. jophus14- if you would be able to explain more, what do you mean by rendering the glass as a Region? I'm not familiar with this. Link to comment Share on other sites More sharing options...
jophus14 Posted January 4, 2009 Share Posted January 4, 2009 In your rendering dropdown window you are able to select what you want render in your scene (view, region, selected, blowup, etc). You could drag a region box around the area where the glass is and just render that area instead of rendering out the entire view. This is great for test renders and doing side by side comparisons when you do changes to your scene. I hope this helps. Link to comment Share on other sites More sharing options...
robert taylor Posted January 4, 2009 Share Posted January 4, 2009 this should help... http://evermotion.org/?unfold_exclusive=302&unfold=exclusive Hi, Thank`s for that tutorial tip,I`ve not come across that one before. Link to comment Share on other sites More sharing options...
djohnson129 Posted January 4, 2009 Author Share Posted January 4, 2009 jophus14- I've looked all over for the dropdown list with region rendering and could not find it. Would you be able to tell me like a tree of how to access it? Link to comment Share on other sites More sharing options...
djohnson129 Posted January 5, 2009 Author Share Posted January 5, 2009 Hey just wanted to let you know I got the environment issue figured out. Here's a look at it after a run in photoshop. I went the alpha route The background in the attached pic isnt the one I'll use for the final, just wanted to throw something in for the test. Link to comment Share on other sites More sharing options...
jophus14 Posted January 5, 2009 Share Posted January 5, 2009 This is what I was talking about. You can adjust the size of the box inside the render screen in order to just render out a section in the viewport. Does it make sense now? Link to comment Share on other sites More sharing options...
Dave Buckley Posted January 5, 2009 Share Posted January 5, 2009 don't mean to hijack this thread but, i know that with mental ray you can do the iterative rendering where max will only render the selected objects, can this be done with vray??? i only ask because i need to do what has been described with the glass reflections but with vray, it will also help when it comes to making the windows reflect my photoshopped sky, could use the alpha as mask Link to comment Share on other sites More sharing options...
jophus14 Posted January 5, 2009 Share Posted January 5, 2009 You cannot render "Selected" in the render dropdown menu using Vray. Pretty irritating. Link to comment Share on other sites More sharing options...
Dave Buckley Posted January 5, 2009 Share Posted January 5, 2009 i guess its just a reflection pass then??? Link to comment Share on other sites More sharing options...
djohnson129 Posted January 5, 2009 Author Share Posted January 5, 2009 jophus14 - My render window doesn't look anything like that... is it a newer version of max? I'm on 9 still Link to comment Share on other sites More sharing options...
djohnson129 Posted January 5, 2009 Author Share Posted January 5, 2009 I found it! The darned thing was hiding in a drop down on the left side of my toolbar for some reason I think it's cuz I put the teapots over there since I just use the hotkeys for render settings. Link to comment Share on other sites More sharing options...
jophus14 Posted January 6, 2009 Share Posted January 6, 2009 Well there you go. Rendering regions is a huge time saver. Link to comment Share on other sites More sharing options...
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