That was my only cost as I had the tube on hand. You’ll need to measure the size of your tubes to get film to cover the tube.

Prices are going crazy on this stuff, so check around on Amazon and find some inexpensive but good quality film. You only need one sheet, but I have two lenses I want to make a filter for.

I purchased the Thousand Oaks sheets from Amazon, two 4X4” squares. glue the other section of the tube to the assembly.cut two sections of the tube (more on this later)…cut the film to fit the outer diameter of the tube (or do it later as I did).get a cardboard mailing tube (the beefier the better) that fits over your lens (barely) … anywhere shipping stuff is sold.I am a rank amateur in photography, but I do have a Macgyver streak, and was actually born in Kentucky, so I have some leeway lest you judge me too harshly as being overly Bubba. If you're excited to shoot the eclipse but you don't have a solar filter to protect your camera, here are some directions for a handy DIY solar filter that will allow you to get some shots.

Nikon lens filters for eclipse