Welding glass photos
A Neutral Density filter for a camera is basically a dark piece of glass you place in front of the lens. These filters are an easy way to block light and thereby get a longer shutter speed. I always wanted to try a very dark ND-filter, but those cost way too much for my current financial situation, so I read about this on the web and tried it out!
I bought a piece of replacement glass for a welding mask, which reduces the amount of light passing through to roughly 1/1000th of the original amount, which enables me to use very long shutter speeds in broad daylight. It's a fun tool, but adjusting the settings on the camera can be a bit complicated.
The welding glass leaves a very green tint on the images, as you can see, but it's no problem removing it in Photoshop.
All the photos were taken in the middle of the afternoon in broad daylight!