Wed Jun 13, 2018 1:51 pm
4000x2000 is quite high res, nearly full A3 at 300 dpi, unless you are going to print that large (A3), consider something smaller. Also most screens will be 'just' HD so 1920x1080, wich is about half of that size too. Doubling an image for the 'rare' 4K screen user should still look good enough.
I render 195x135 mm at 300 dpi images that print fine when I scale them up to A4, which would be about 200 dpi when printing. If you have a good printer, 150 dpi should still be good enough for printing. 300 dpi and up I would consider for profesional offset printing, but maybe someone with more experience / know-how will disagree. I just know this works fine on our Xerox C60 and the Canon Imagepress C1 we had before that.
Depending on the global illumination settings it will take a while especially for interior renders.
If you are making a 'final' render for a billboard or professional printwork, sure, go all out on settings, however if it is for a client briefing and you are likely to make the same render (or similar) many times, I would try to make it look 'good enough'. Personally I start out with a the low presets like 'outdoor daylight fast (physical)'. Swap out the weather preset to a nice looking sky, remember to keep using ArchiCAD sun position for more control over where shadows go. In detailed settings under 'Environment > Clouds' turn off 'cast shadows', it looks bad and takes up render time. Under 'global illumination' start out with the 'preview' presets (exterior / interior). Exterior will be the lowest quality, but more than fine for exterior shots, for interior use the 'interior' ones, or you will get spots due to low GI. Finally under 'options > general options' make sure you set ray treshold to 0 for the best reflections, ray depth and reflection depth to something like 10-12 to allow for enough layers of transparancy (glass!) to render.
This is just a quick way to get started. Do some post production in photoshop with adjustment layers (desaturate 20%), slap on the name of your company in case the image gets shared around and just re-use these layers when you need to do the render again.
I also do some sketch render overlays and water colour effects in photoshop to make the whole thing look a bit more sketchy so I don't have to have super photo-realism, but that is sort of personal taste.
Erwin Edel, Project Lead, Leloup Architecten
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