My first Camera Obscura

I wanted to see how the Camera Obscura works. As a first place, I choose an office of my colleague at work. The hardest part was to make a dark but it was overcome. The image of the world projected through a small hole was not sharp and visible as I expected. The visibility was low but when photographed with long exposition the world behind small hole revealed. I used Samyang 8 mm, 30 sec., shutter 33. It was an interesting feeling to be inside the dark and watch the projected image.