Phantom 4 images seem to have a tendency to display white dots or dead pixels in the blue part of the sky. In this tutorial, I will show you how to get rid of them with a simple trick in Photoshop.
The first thing to do before watching this tutorial is to download DNG cleaner. You can find the link at the bottom of the page:
You should run the software on all your images before you start working on them, to avoid these situations.
But if like me, you didn’t know and want to know how to take care of it, then watch the tutorial!
Or here’s the low down:
Shift / option / CMD + E to create a new layer.
Go to filter / Noise / Dust and scratches.
I find that a radius of 2 or 3 gets rid of it (might have to be more depending on your photo). Leave Threshold at 0.
Now you see all the white dots have disappeared, but it’s also deleted a lot of details in your image. That’s because it’s applying the filter to the entire image, which is not something we want.
The white dots / dead pixels are only visible in the blue (ish) part of the image. So we want to create a mask that will only apply the filter to the colour blue and not the rest of the image.
To do that, create a white layer mask on your layer.
Go to Select / Color Range.
Here click on the blue colour using the eye dropper. You may have to use the + and – eye dropper to add and remove colours to the selection. What you want is the blue part of the image to be completely white in the mask and the rest to be black. So you might have to play with the fuzziness (how much it applies) and the range (how deep in the colour it goes).
You want to end up with a mask like that. But basically here you should be able to see whether the dots have disappeared and the details in your image are still present. For me here, the church was the problem in the mask as it was getting caught in the selection, so I paid special attention to it.
You can still brush manually some part of the images you don’t want the filter to be applied to using a dark brush. And if there’s still a couple of dots around, use the spot healing brush to deal with the last intruders.
So hope this was helpful, let me know if it worked for you and if you’d like me to do a video about a problem you have, I’m open to suggestions!