Tue Aug 21, 2018 9:11 am
Before rendering, get a good composition for your shot. 54 degree view cone comes close to human eye (no uncomfortable fish eye lens looks!), basic rule of thirds composition (by approximation) ussually works well, I find. Two point perspective button is my friend too. Save your camera in a path for future use.
I use special renovation filter (called Presentation) that I use to hide all my birds, trees, people etc from the technical model. I make more of these for each camera as needed.
If the modelled surroundings becomes too complex, I sometimes have a seperate PLN for this and hotlink the building model in to the 'terrain' PLN.
After this, proceed as below.
Start with Outdoor Daylight Fast (Physical).
Untick Detailed Settings (if that is ticked).
Pick a nice physical sky under Environment (I like Friendly Afternoon). Make sure Use ARCHICAD Sun Position is ticked, or your settings for sun altitude and azimuth won't be used.
Tick Detailed Settings.
Go to Environment > Physical Sky > Clouds. Turn off Cast Shadows (looks rubbish, IMO).
Go to Global Illumination, pick Preset Exterior Preview. If you find the render to have too many 'dark spots', up the setting to Preset Exterior Physical Sky (expect an increase in render time of about 4x).
Go to Options > General Options. Set Ray Threshold to 0 to have reflective surfaces look their best (IMO), or at a very low value to have some reflections show. Set Ray Depth to around 12 or higher depending on how many planes of glass are visible in the shot. 12 works for me in most projects. Do the same for Reflection Depth. Tick Generate Alpha Mask if you intend to swap out the background of the Physical Sky for a picture in a photo editor (make sure you save your image as PNG with 'High Accuracy Color with Alpha Channel' to have the transparancy mask available).
Consider printing size. I render out my images at 195x135 mm, 300 DPI. These still print fine when sized up to A4 full sheet on a decent printer.
Make sure Apply Render Safe Frame is ticked.
Hit render button.
With these settings a typical project render takes less than 3 minutes on my old workstation.
I then add some sketch render channels and do a bit of photoshop watercolour effects + desaturating of colours etc and get results as below.
These are our typical renders that need to be reproduced often for the client when design changes are made. It takes max. 5 minutes to do, and by using layer effects in photoshop, it becomes copy + paste of a few images and merge layers down to show changes for a new render.
Might not be your preferred style of presentation, but we are happy with the results.
Finally I am getting good exterior renders. It is much about good detailed model and postproduction to arrange contrast brightness and tones. But Still I have 2 questions, you said that you filter the human models, birds, tree,..., and also separate the terrain from the building through usage of hotline. But how does this affect to the render, do you render different scenes for the human models and the terrain and they put together in photoshop?
I found that using Ray T 0, Ray Reflection 12 and R depth 12 it takes too long.
Archicad 21, Autocad 17, 3ds Max lover, Rhino 5, iMac (Retina 5K, 27-inch, Late 2015)
4 GHz Intel Core i7
16 GB 1867 MHz DDR3
AMD Radeon R9 M395X 4096 MB