@shiennar Hmmm that was my best diagnosis but 50mm isn’t unusable in an interior space and your room is enclosed…I suppose my eye isn’t quite sharp enough to make water-tight judgements about camera settings lol. Still I think the main issue lies in the camera. Just something to keep in mind.
Oh also try a sun lamp instead of an area lamp. While I recommend areas for nearly all other types of lighting, I do recommend sun lamps for sunlight.