One of my Mother’s Day gifts this year was the expodisc (aff link) that I requested! The expodisc is a tool for creating a custom white balance for your shots. I have been using Kelvin temperatures for white balance, and I do love using those. However, there are still times when the lighting can be wonky and mess up your white balance.
I also use a gray card for metering, so I really wasn’t sure if a gray card and expodisc were interchangable. I asked a photographer I respect, Darcy Milder, about the difference and when to use which. Darcy explained that a gray card is best for multiple indoor light sources, while an expodisc would be great for outdoor light to measure incident light. You can certainly use them in either situation, but each tool has a separate function.
You can also use white paper to create a custom white balance, but I wanted something a little more sturdy. I have the 77mm filter which fits my largest diameter lens, but will also cover smaller diameter lenses. Therefore, no need to purchase multiple sizes.
I would love to give a great tutorial on using the expodisc, but just getting it 2 days ago means I have not fully grasped using this tool, yet! There are several specific applications for this tool. You can use it for incident light, studio strobe, landscapes, ambient light, and flash photography. I’m a die hard natural light photographer, but it is good to know that I can continue to use this tool should I change my mind about flash in the future. 😉