How And WHY To Use Drone ND Filters – DJI Mavic 3 / DJI Mini 2 Freewell ND Filters
I see all the time in the comments on my youtube channel and that is: do you need indie filters, so im going to be answering that and im also going to be showing you how i use my nd filters when im out flying ive come out today. In a slightly cloudy northern ireland, but well make do im going to show you how i use them and im going to explain the benefits of using them lets jump right in now, full disclosure, the fillers im going to be using today are these fellas that freewell Have sent me out for my dji mavic 3. again dont be alarmed if you dont have a dji mavic 3 freewell also make excellent filters for the dj mini 2, which i have and have been using for a long time now and theyre. Also fantastic im going to put a link to these ones for the mavic 3 and the ones for the dji mini 2 below. So you can get any filters for whatever drone you have. This set for the mavic 3 is fantastic. It comes with an nd4 polarizing and then the e8 polarizing md16 polarizing and an nd 32 polarizing that will cover you for 99 of the time youre out flying. Then you also get an nd64 for them super bright days. You also get a cpl a circular polarizer, and then you also get an nd 1000 and an nd 2000, and therefore long exposure photography, which is really fun today, so lets get the drone up.
Let me show you how i use these filters and expose correctly, while also getting motion blur, so i brought my dji mavic 3 out today, but dont worry because these tips will apply to dji mini 2 or any other drone. The methods i use for these nd filters and the reasons for using them apply for all drones, so thats nothing to be concerned about just get my thrown out, get it opened up and, as you can see to begin with, i have no nd filter on. So how do andy fillers help you get cinematic video? Well its all to do with something called the 180 degree shutter rule to get motion blur now. What is motion blur well motion blur is where any areas of movement in your video get blurred and the reason why that helps you get cinematic. Video is because our eyes always see motion blur, and so, if you see a piece of video which doesnt have motion blur, because the shutter speed is really high, so for example, you see a car going down the road and the wheels are turning, but you can See the spokes super detailed, it doesnt look cinematic your eyes can tell somethings off, so you get cinematic video. You want that motion blur and to get that motion blur. You employ the 180 degree shutter roll. The 180 degree shutter speed rule is that your shutter speed must always be double your frame rate. So if you film, 25 fps, then your shutter speed should be 50.
If you film at 30 fps, your shutter speed should be 60.. If you film, at 60fps, your shutter speed should be 120, and that will give you motion blur. But the problem with that is having your shutter speed. So low usually leads to your highlights being completely blown out and im going to demonstrate that now and demonstrate how you use these andy, fellers. Okay, so ive got my mavic 3 turn on im, going to put it down in the ground. Super quick im going to set my manual video settings to settings. We want to get motion blur, so ive got it at 4k 30fps. Now, if you remember, the shutter speed should be double the frame rate. My framerates 25 fps, so ive set my shutter speed to 1 over 50. im just going to put the aperture 2 4. I think thats the perfect sharpness for the mavic 3.. If you cant adjust the aperture like in the dj mini 2. Dont worry about that. Now something you want to turn on and something i find super super useful is: if you go into settings, you want to scroll down to you the over exposure warning. I already have it on. Let me turn it off to show you the difference so thats it off. Well talk about the blown out whiteness in a second and im going to turn it on, and what youll see is that overlays, these zebras in areas that are overexposed now? Why is it important that we dont overexpose the image? Well, if you take a look at this example, what this means is all this white will not be recoverable in post, so its usually the sky that looks like this, and if your sky looks completely white in the screen and youre getting these over exposure warnings on It when you bring it back into your editor, the sky will just be completely white and you will not be able to recover that in post, youll never be able to see them clouds again and for a nice exposed properly exposed image.
We want the sky and all the nice clouds and everything to be on it. So you can see the problem here when ive set my settings to one over 50, which is twice my fps to get motion blur. The image, if i bring the drone up, is completely overexposed like you can barely see anything now. Normally what you do if you werent worried about motion blur, is you just tweak the manual settings, so you could bring the shutter speed up to one over two hundred? Actually, in this case, we need to go way up to like one over 800 to bring back that sky, and now you can see them. Overexposure warnings have pretty much gone, and that means our image is exposed nicely and all that information is there well be able to use it in our video editor, its not completely blown out and unrecoverable, but one over 800 is not going to give us motion blur. So if i bring that back down over one over 50, you might see where this is going to bring this image down, to bring the brightness down to get it properly exposed. We need to put a darker piece of glass in front of the limbs to stop as much light getting in, so we can expose this image properly, thats it in a nutshell, thats what andy fellers do. So, how do i decide which andy filler to use? Well, its actually deceptively simple, i basically hold the drone up and i take a look on the app screen and i have a look to see how much is over exposed and remember.
You can see that with the over exposure zebras, what ill do is ill. Just pick a strength of andy feller, i think i need remember if you pick one thats too dark, you can always go lighter, so im going to start with a andy 16. I think so, its really simple and straightforward. Do these freewheel filters are absolutely fantastic. The filter in the front of the dji mavic 3 just clicks off and you take the freewell filter and you just click it on and then what you do is you hold the drone up again and you have a look on the app to see what the Exposure looks like now a really handy top tip. If you want to know how close to perfectly exposed you are. A visual guide is the manual metering down in the bottom right of the app you see the little mm. Now you want that to be as close to zero as possible. Now thats not always going to be possible here. You can see its minus one and thats with the nd 16 on, so what you can do is you can actually increase the iso slightly. So if i increase the iso to 200 and hold up, you can now see its zero, so that would be a perfectly exposed image. You just dont want to jack up the iso too much as too much iso can cause noisy footage now lets say, for example, the image was way too dark when you put that nd filter on so lets change the andy 16 down to nandy ia.
So all you do, is you take the nd filter off you just twist it off and im going to take an ndea and ive just popped the nda on now i put the iso back down to 100 and actually, as you can see, the manual metering is Minus not 0.3 thats as close to zero, really as youre going to get, and that means without using a higher iso than 100. You should always really try and keep it to 100. If possible. This andy feller is perfect, and now you can see we have no overexposure warnings. We have a nice perfectly exposed image. You can see all that cloud detail in the sky and you can see the whites of the sea. None of thats overexposed you dont, get any over exposure warning and thats how you use nd filters to get a perfectly exposed image and thats my process, its basically a glorified trial and error process. You hold the drone up if its overexposed, you take a guess at the strength of md filter you put on if its perfect grape, if its too light you put a dark one on, if its too dark, you put a lighter one on and with these three Well, fillers you just twist on and off its great and like i say, if you dont have a dji mavic 3, they do fillers for the dji mini 2 and they pop on and off just as easy. So there you have it thats my process for using nd filters and, in particular the free, well filters which ive been trying out today.
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