Keeping Focus And White Balance
It's funny, some of the first tests, as some of you may know, that were just going out with the Mavic is like, oh the Mavic footage is really blurry, and whatever. And what people didn't realize is that on the Mavic, you actually do have to focus. You tap the focus just like you do on a phone. So everybody was out filming, of course used to the Phantoms, and they were going around with like, lenses that were out of focus. So, in all the tests, once they figure that out, are starting to look pretty good. I mean, the images are looking great. Very similar to the Phantom 4. So I want us just to take a look at the interface for focusing. Hey, it's out of focus. What's going on? Okay, so with the DJI GO app, what you have to do is there's an autofocus option and a manual focus option. Can't remember if there's a continuous autofocus, but I never use it 'cause what I do is I just put it into. Hey, you can see my confidence monitor. Instilling confidence. Let's see. So, since we're on the gro...
und here, okay. Hey, hey there back there. So it needs a. And we'll go back to the confidence monitor. This is behind the scenes stuff. Okay, yeah, yeah, this will work. Cool, okay so you can my notes. All right, so I set it on autofocus, then I hit focus, and then what I do is I toggle back to manual focus. 'Cause that's one thing you just don't want, is you don't want that autofocus to hunt when you're out flying. I failed to mention this before, but, I mean, the autoexposure works pretty dang well in any of these copters. The problem is though, when you're doing dynamic moves and you go from say, looking at the ground to up then you see this, like, shift. And some, like I had this one copter where it would not shift, like, linearly. It would always reevaluate and go doomf, doomf, doomf, you know. And it was just like (groans). So you have to kind of find a middle ground, you have to find something that works for your whole move, you know. So typically if you're looking at the ground, you're gonna have to tend to expose it a little darker than you might otherwise do if you were just shooting the ground. Like, if you're just shooting the ground, like straight down, you would expose it for, you know, right down the middle, but of course you're gonna reveal then up, and you're looking at it, at a sunset or whatever. It's gonna be brighter, and so you're gonna have to strike a balance. So same goes with focus. You wanna, if you have the ability to autofocus, you want to maybe use autofocus to lighten your load by just being able to tap to focus, but then you wanna lock it. So, when I'm out, often times I don't focus until I'm up in the air, because your scene will change. And like, our wide lens that we use on the Inspire, it's not as critical. Like, I mean, you just tap on the trees in the distance or whatever. We have a, I think this lens that we have on it now is actually a 45 mil lens, which as you may know this uses a Micro 4/3 sensor, which has a two time prop factor. So this 45mm lens is effectively a 90 mil lens. And it's just naturally has a shallower depth of field at any given aperture as our wide angle lens has. And so it is crucial. Like if we're filming a building at a certain distance, I always check the focus. We're always double checking our focus, and then locking it. One option for those of you with maybe less video camera experience. There's something called focus peaking, and DJI has this option. We have manual focus assistant. Is that what that is? Let's see and make sure of our autofocus assistant. Wonder if I'm gonna have trouble getting this going in the studio. So one is, it'll punch in when your manual focusing. Bill's usually the one doing this on the copter and I'm just flying but. So manual focus assistant, let's turn that off. Autofocus assistant. Yeah, it's not showing any peaking at the moment. Wonder if I just don't have enough high contrast. Anyways, I'll look at that tonight and see if that comes up. Normally there's like, these little like, pixelated colors that come up when something's in focus it'll highlight. The autofocus assistant, sorry the manual focus assistant is that. Yeah, that's when it punches in. So sometimes you just, especially on like this lens, this 45 mil lens, you just wanna make sure it's spot on. And by using little tools like this to punch in, you know, you'll make sure. There's been a lot of times when we first got this 45 mil lens that we just thought we had it, and it just, we were coming back with fuzzy footage, so. It's just something worth noting. On anything where you've got focus control, go out and do some test shots with it. And get familiar with those modes. Let's see. White balance, not much to say about this. It's just a, you know, just like your picture profiles, it's something that's gonna affect the color of your images. You can adjust this a little bit in post, but you don't wanna push these images too much. These are mainly eight bit images. You know, with video anyways, you can't push the image too far. Or you don't want to, it starts kinda like, degrading the image. And so, with white balance, in the DJI app what I typically do is I just set it on, like if we're outside and it's a sunny day, I just use the preset for sunny. But of course, like I said before, if you wanna go in and set a custom value you can dial in the Kelvin value as well. So indoors, if you had like a tungsten 3200 Kelvin, and you know, and so now obviously these are probably at 5500 Kelvin, or these are probably daylight balanced.