Simple Variable Neutral Density Filter

Step 2 Dissasemble One Filter

Pick one filter and dissasemble it. Filters are normally easy to take apart; just unscrew the retaining ring from the front size of the filter. Most have a couple of small notches in the retaining ring which you can push round with a small screwdriver. Remember righty tighty, lefty loosey...

Be careful with this step - it is very easy to slip and scratch the filter. Make sure you don't do this with a polariser you care about!