Here are the scenes (SU15 format so that most people will be able to open them into SU2015-SU2019) which are featured in our Tutorial Videos on Youtube. #videotutorials
In this scene, click the tab for Easy 09, render with Easy 09, this is the version mixing spots and emitters. Click the tab for Easy1-7, it hides all emitters and adds the spots which replace the emitter planes so that it will render relatively quickly with Easy 1-7. Actually this is a complex lighting situation that can take a long time to render. For the best results with quickest rendering time vs quality with the Photon Map render settings (Easy 1-7) try the one under "Advanced>AlternativeAA>02c."Low_AA3_Fine"
BarcelonaPavilion_MiesVanDerRohe_TwilightTutorialComplete-NIGHT-Spots-vs-Emitters_Lights-Easy09-1h20mDNZ.jpg (298.81 KiB) Viewed 21117 times
Before you render - Don't forget to load the free night-time Spherical sky for this tutorial found in the zip file download link above. Go to Twilight Render Environment dialog and browse to the sky image "Spherical-Treeline-Lake-Pano-Sunset2-dar.jpg"
Use this in place of the sky seen in the video tutorial.
After the image is rendered if you bring it into a photo editor, like Photoshop, try a simple "pop" of contrast with a curves adjustment layer like shown here:
BarcelonaPavilion_TwilightTutorialComplete-BoxSconces-postpro-curves.jpg (127.98 KiB) Viewed 21115 times
Chair Loft-TextureTutorial-Render-1920x1080.jpg (900.06 KiB) Viewed 20126 times
Download this Scene for Final Rendered Image of lone chair in front of brick wall (you must download the brick textures and open the Deep Material editor to direct all texture paths to your downloaded 3K images from Poliigon.com for the brick wall to work properly - which means you will need Twilight V2 Pro to edit the Deep Material for the wall.)
Video tutorial How to use high resolution PBR Textures with Twilight Render
(Specular, Gloss, Displacment, Normal texture maps)