Moire in Backlit Autumn Leaf Shot

Cynthia FarrWeinfeld wrote:

So, in processing more of my pictures from my recent Western Maine trip, I discovered yesterday that one of my favorite shots had significant Moire issues in the brook water and in some areas of the yellow leaves in the trees. I had bracketed shots originally, and the most Moire was found in the most accurately exposed one. In the underexposed shot, fortunately, there was little enough that I was able to use the ACR Moire removal brush to get it outta there, as you'll see in the full shot I'm posting below, but I'll show what the moire looked like in the worst shot in 200% crops, after the original shot.

I've never had this problem before, because I never had a camera without a Moire filter, so it was a huge surprise to me and it looked creepy, like the Matrix had gone on the fritz in my world!

Anyone else had this problem with the K3II yet? Of course, there is an in-camera moire filter with three varying strengths one can turn on. So, now I will be checking shots like this, that could cause a moire issue to crop up, and if I see it, I will know to try out the in-camera filter!

The completed shot:

Major moire in the specular highlights of the brook:

The Matrix Reloaded in the trees;

Love the composition. You might be making the issue worse by using f16 and pushing the lens capabilities when not needed. If a faster shutter speed was OK, in terms of composition, I think you could have shot at f8 and kept DoF in the same practical range while lessening the moire like affect. Do you have any wider aperture shots that show less of the issue? If shooting RAW, does the effect look worse before processing? Just curious as this just doesn't look like moire I'm used to seeing.