Hey all,
I have a goal of designing a hex collimator, but am struggling to find resources on how to engineer it. My goal is to have light source - collimator - incident surface in as small a distance as possible (preferably <= 80mm) while minimizing Moire effects (if they are even an issue).
Basically the only papers I can find on this subject are academic papers designed around X-ray technology - that stuff is quite dense, and Iβm operating in UV so the scale is quite different.
If anyone has any resources on designing optimal collimators / calculating Moire fringes based on hexagonal openings, I would love to hear!!
(Side note - I am planning on 3D printing the collimator so if anyone knows about the transmission properties of UV in PLA or PETG, Iβm also interested in that. There donβt seem to be any good resources.)
I tend to get bad moire patterns when I shoot video of glass buildings. Especially if they are lighter in color. I generally shoot 4K 30 video, but wonder if that is causing my issue? I am unclear if it's caused by an exposure setting or something else. I always use the histogram, so I know I'm not getting a lot of over/under exposure. I use Davinci Resolve for editing and export HD. Noise reduction in Resolve helps slightly, but still quite visible. Any suggestions?
I took a photo and it looked as though it has the moire effect. It was a grid-like thing in the photo. There was a great circular-looking effect to it, too! But a moment after I saw the moire, it disappeared. The photo looked just like it did in the real world.
Obviously, this is a bit of a disappointment, but I'm assuming that this is intentional engineering and more people are annoyed with the effect than enjoy it. Does anyone know for sure if this is what happened, though? A quick search doesn't return anything conclusive for Android photos. Maybe someone here knows better, or has more powerful Google-fu.
Some cameras haw raw output, without anti aliasing filters, like the Panasonic S series.
