# Why a scene render might have many very dark triangle artifacts?

It was imported from obj and the scene has some environment light and a lot of sun light (the only way to make shadows more contrast I found).

.blend file: https://yadi.sk/d/UEUud0Y93HWBUH

Thank you!

• Thank you, works like magic! Could you please also specify name of an operation that is performed when you do Ctrl+N? – Ben Usman May 1 '17 at 3:31