Another moire question...

[michaelhames]

I am asking for your input at this point. Here are a couple of examples from a job this weekend. I have resorted to taking my old Phantom 4 whenever I have any type of metal building to photograph since the images out of the Air3S are unusable.. I thought I would be safer with this shingled structure but as you can see the moire is out of control. Sometimes I have to deliver raw images and I just hate it because they look terrible.

I have tried everything I know.. I am shooting at a low ISO (100-200) - I have images from all kinds of different angles that still have the effect. I am shooting in the 12MP mode because I have found no use for the 50MP.

Is it possible that my drone is just defective? I am really struggling believing that it can be this bad? I appreciate your input.

Michael

 

[Meta4]

I have tried everything I know.. I am shooting at a low ISO (100-200) - I have images from all kinds of different angles that still have the effect.

Have you tried getting closer?

Is it possible that my drone is just defective? I am really struggling believing that it can be this bad? I appreciate your input.

It's not that the drone's defective.
It's physics.
The array of tiny pixels on the drone's sensor and the textured surfaces are interfering with each other.
A sensor with larger pixels (as you've found with the Phantom 4 pro) or changing camera to subject distance is what will help.

What is Moiré and How it Can Ruin Your Photos

Moiré can ruin your photos by adding wavy patterns to them. It occurs when an image is captured with a high-resolution camera that has no low-pass filter.

photographylife.com

 

[michaelhames]

Have you tried getting closer?

It's not that the drone's defective.
It's physics.
The array of tiny pixels on the drone's sensor and the textured surfaces are interfering with each other.
A sensor with larger pixels (as you've found with the Phantom 4 pro) or changing camera to subject distance is what will help.

What is Moiré and How it Can Ruin Your Photos

Moiré can ruin your photos by adding wavy patterns to them. It occurs when an image is captured with a high-resolution camera that has no low-pass filter.

photographylife.com

Getting close would just keep me from getting some shots I need so I guess that wouldn't work. I guess I have been spoiled and never owned a sub 1" sensor drone (other than my mini3 that I didnt use commercially). Bummer

Thanks for the input

 

[MavicAir2Marc]

Try turning the sharpness down and if worse comes to worse, mask the moire and blur it slightly then add noise or grain back in to match the rest of the image.

 

[Ralph thompson]

Lightroom and Photoshop have de-Moiré algorithms, you can even just brush on the algorithm using the mask tool and set the strength, they work very well, this is a common problem with lower res sensors.
EDIT - I tried this on yr image and it didn’t work.
Are you shooting raw (DNG) or jpgs? I see even the siding planks are aliasing. The higher the resolution the less likelihood of aliasing. If yr shooting low res jpg’s that that could explain it.

 

[anotherlab]

I am asking for your input at this point. Here are a couple of examples from a job this weekend. I have resorted to taking my old Phantom 4 whenever I have any type of metal building to photograph since the images out of the Air3S are unusable.. I thought I would be safer with this shingled structure but as you can see the moire is out of control. Sometimes I have to deliver raw images and I just hate it because they look terrible.

I have tried everything I know.. I am shooting at a low ISO (100-200) - I have images from all kinds of different angles that still have the effect. I am shooting in the 12MP mode because I have found no use for the 50MP.

Is it possible that my drone is just defective? I am really struggling believing that it can be this bad? I appreciate your input.

Michael

What resolution are the images coming at? The pictures that you posted are low resolution PNG files.

12MP should be 4000x3000, and you shouldn't have a moire pattern at the distance that you are shooting from.

 

[Dale D]

I am asking for your input at this point. Here are a couple of examples from a job this weekend. I have resorted to taking my old Phantom 4 whenever I have any type of metal building to photograph since the images out of the Air3S are unusable.. I thought I would be safer with this shingled structure but as you can see the moire is out of control. Sometimes I have to deliver raw images and I just hate it because they look terrible.

I have tried everything I know.. I am shooting at a low ISO (100-200) - I have images from all kinds of different angles that still have the effect. I am shooting in the 12MP mode because I have found no use for the 50MP.

Is it possible that my drone is just defective? I am really struggling believing that it can be this bad? I appreciate your input.

Michael

I read your post and Googled it and got this link. I read the link and there were a few tips in there so for what its worth...click on link
Dale

Google Search

 

[PHZ]

If you were to move in closer, as you mentioned you would lose part of the shot. However, you could take a sequence of photos, a manual pano, and stitch it together in a photo editing product. May be an option?

 

[Donnie Frank]

Moiré is a simple fact of photography and videography whose only cure is compromise. Moiré is a factor of math (pixels). "Compromise" is the only way around it. You either have to compromise lighting or angle or resolution or sharpness, etc. As an experiment try viewing the footage on different video monitors of varying resolutions. If you have a 720p monitor, chances are it may go away.

On one shoot I was viewing 4K video of a bridge on a 1080p monitor. The Moiré was off the scales. The DP (not being a real DP with an understanding of Moiré and how it works) complained. I simply digitally zoomed the footage to a 1:1 pixel ratio (zoomed 200%) and the Moiré went away. You may be able to achieve the same result with digital zooming, but then that's not the composition you want. So try either viewing on a 4K monitor (assuming 4K footage) OR, if you're viewing on a 1080p monitor, shooting 1080p.

Beware that "de-Moiré algorithms" are not without compromise. They essentially automatically utilize some of the tricks that I have outlined here. If you follow my advice, you can CHOOSE your compromise vs. having it chosen for you by an algorithm.

Good luck.

D

 

[dajomu]

From

I am shooting in the 12MP mode..... Is it possible that my drone is just defective? I am really struggling believing that it can be this bad? I appreciate your input.

YI is possible that the banding visible in your screen capture is a display artifact caused by the way the image file is being rendered by your display software, rather than a problem within the image file. To check, try zooming in and out while viewing the file. If the bands shift around then this is a rendering/display artifact. For more help exploring that from this community, please upload the original image file (rather than a screen capture), and please describe the hardware, OS, and software you are using for post processing.

In any event, while moire is a fact of life under certain circumstances, the banding shown in your screen capture is far worse than expected for this kind of scene at 12mp. If those bands are really in the original full resolution image data, then something is wrong with your camera, and I'd guess that it's a defective anti aliasing filter.