Just like every other drone that DJI has released, Freewell gear has made some nice ND filter kits for the DJI Mavic 2 Pro. Now theoretically due to the Mavic 2 Pro having a variable aperture, ND filters may not be needed when you are trying to follow the 180-degree rule and have that slight bit of motion blur on objects with motion. Now let me explain for those who are not quite sure what ND filters do and what the 180-degree rule is.
The 180-degree rule for cinematography states that you should set the cameras shutter speed to double that of the frame rate in which you are filming. For example, if you are filming at 30 FPS you should set your shutter speed to 60 (1/60th second). If you’re filming at 60 FPS then you should set your shutter speed at 120 (1/120th second). Following this rule give a slight amount of motion blur that is pleasing to the eye and brain.
Now there can be a problem when following this rule. On most consumer drones the aperture is fixed and when you set the appropriate shutter speed the image can be overexposed. To correct this you would add an ND filter over the lens which is essentially a pair of sunglasses that cuts back the amount of light that can enter. Now with the Mavic 2 Pro, we have the ability to adjust our aperture, this will also cut back the light that hits the sensor. This again, in theory, eliminates the need for ND filters…or does it? Even with the variable aperture, there are those times that you would still want to use ND filters. Many agree on the Mavic 2 Pro to achieve the best image quality and clarity its best to keep your aperture between f/2.8 and f/5. At this aperture, you would still need to use ND filters on bright sunny days. As well there have been instances when I have set the aperture to f/11 and the image was still overexposed, thus requiring an ND filter.
I have been using Freewell Gear ND filters for many years for my GoPro and various drones I own. I have always been very pleased with the quality and durability and not to mention their very competitive pricing. They offer a variety of filter sets for the DJI Mavic 2 Pro including a standard day 4 pack that includes an ND4, ND8, ND16, and a stand-alone polarizing filter. They also have a bright day 4 pack that also feature built-in polarizers to each ND filter. The pack contains the following an ND8/PL, ND16/PL, ND32/PL, and an ND64/PL. You can also purchase both sets in one package called the “All Day Pack”. For those who like to do long exposure photography with their Mavic 2 Pro, they even sell an ND1000 and ND2000 filter. The Freewell gear ND filters are similar in size and weight to the stock lens cover and does not affect the gimbal performance. You can also attach the gimbal cover when the ND filters are installed, no need to remove them for transport.
You can watch our YouTube review video to see these Freewell ND filters in action.