For these lighting studies I relit scenes from the Unreal marketplace.
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For the second scene: I wanted to create a lonely office with bleak lighting for both day and night. I used the Lightroom scene by Koola and added furniture from the HQ Residential House by NotLonely (https://www.unrealengine.com/marketplace/en-US/slug/lightroom-interior-day-light) and (https://www.unrealengine.com/marketplace/en-US/slug/hq-residential-house).