If you own a Panasonic GH3 / GH4 (or other M43 camera) then you'll find that the the Panasonic 7-14mm Wide Angle Lens is a must have for ultra wide views with minimal barrel distortion. You'll often see my gimbal reviews setup with the GH4 and the 7-14mm as this is one of my favorite lightweight camera setups to run around with.
But in bright outdoor situations you don't easily have the option of adding a proper CPL Polarizer or ND Filter to maintain proper shutter speeds while shooting video. Perhaps you'll need a very dark ND Filter for long exposure images or to add motion blur during timelapse images. Or maybe you're thinking about adding a basic UV (clear) filter to protect the front lens element during a car mount, or sports that could kick debris towards your lens causing chips and scratches.
There's a number of good reasons why you'll want to add filters to the Panasonic 7-14mm lens, and so you'll want to check out this PVGear threaded filter holder. It's made of a durable plastic, but has a metal threaded ring to mount your filter. It merely clamps to the hood, so you don't need any tools to get it on or off. If you're a fan of this lens like I am, you can find more information about the Panasonic 7-14mm Filter Adapter over on the product page (click here).
Threaded Filter Adapter for Panasonic 7-14mm Wide Angle Lens
And if you're like me, I like to keep the Variable ND Filter slim while still on a budget. A great option is the Fotga 86mm Slim VND (found here).
@Trevor Calderon - The only problem is how thin the filter is and how wide you can go before you see vignetting. If the B+W is not as thin, you may see some of the filter at the iwder angles.
I recently purchased this lens and am going to pick up the filter adapter from PVGear that you recommended. My only question is about the lens filter that you recommend at the bottom of this post. I'm seeing reviews that with this filter on a 14mm lens you cannot use it at maximum density because it will create a moire effect. Have you experienced that? Do you feel the lens filter is worth it if only using it at a lower density. The price is obviously right verses this B+W custom order filter that I found. httpss://www.bhphotovideo.com/c/product/8021-REG/B_W_65072925_86mm_102_Neutral_Density.html