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Please, put here all tutorial links n' stuff you know about this technique. I need to fit a building into photo but It seems to be quite difficult to get correct perspectives, lightings etc.
There must be a better way to execute this thing so could you help me a bit - Thanks!

what software are you using? If you're using max, use the camera match tool and if you're using photoshop you can use the vanishing point or perspective tools.

I'm using Rhino.. it seems to be very difficult to get exact instructions for that technique. I've google it and I found couple potential things, but nothing like I said EXACT!
Some general 3d+Photoshop tutorial would be nice. Btw, is there right way to do it???

It's not so easy to get a good match. Best would be if you took that photo yourself and have the exact focal length and film size of the camera used. Not sure if Rhino has something like the camera match tool in Max, if it doesn't and you don't have exact camera data it can get tricky...

Rhino has 'perspectivematch' and it works rather well. Just put your image as a wallpaper in the perspective view, use the perspectivematch command and adjust to your need. I usually estimate the size of a building (by counting levels for instance), than build that as a simple box in rhino for reference.

Also, using the objectID and materialID layers together with alpha layers in maxwell are very convenient for compositing. In PS, just place your render, alpha and ID images in layers over your background and use them for easily creating selections.

You can use Photoshop's "Vanishing Point" tool to help with compositing images where the perspective doesn't match perfectly. Here's some tutorial links. Just Googl Photoshop vanishing point tool and you'll find a bunch of resources:

http://www.photoshopsupport.com/tutoria ... point.html

http://www.adobe.com/designcenter/photo ... vanpt.html

http://www.photoshoptalent.com/photosho ... -part1.php

http://www.adobe.com/uk/designcenter/ph ... _PSCS2.pdf

If i´m not wrong photoshop extended can do that. First, open the image you want to match and them open vanishing point. Having done that ,you have to align two planes and finally go to export, and export to .3ds file. That generates a file that contain one camera and both planes perfectly matched.
Here an screen capture: http://www.badongo.com/pic/3348117

Ooooo! Dilbert you have been faster than me ,but hehe i´ve done screen capture

... and don't forget the more precise method... you can also "image model" the "decor".. or part of it, and then off ocurse all problems are resolved.. including shading, lighting, shadows...

Thank's EADC I didn't know that there was that kind of option. And Thank you dilbert ..check those links when my hangover loosen up a bit
And thank you all.. It seems there's not that "exact" way to do it and there seems to be also a couple softwares to do that thing.
I think I'm havin' some kind of little "one man renaissance" going on. Looking also new 3d-software - check my other thread:
http://www.maxwellrender.com/forum/view ... hp?t=27865 I don't know have you aready put your recommentations there but again, THANK'S!