What effect is used to get this purple type of hazy colour? I am not talking about the green, but only the purple look, where you are almost seeing an item twice. I understand that the blue colour got shifted, however how is this hazy purple achieved.
I think you're talking about the color-separated doubled areas, like this:
It's pretty hard to really tell with a low resolution, very low quality sample where the center has been scribbled over. But my guess is that this is a post-processing digital effect meant to roughly simulate exaggerated chromatic aberration, which causes different wavelengths of light to align differently.
Again, it's hard to tell, but I suspect that what this filter did is
- simply separate red, green, and blue color channels,
- apply some scaling or transform to those channels separately, and
Or, it might be as simple as running a 2D image through a "create stereo image filter". There's one in gmic, and here's a very quick demonstration using an image from this site's image of the week (original by VonsShnauzer on flickr).
We start with:
... so maybe that's what you want?
- Use the Instagram (or whatever) "filter".
- Scribble green over face.
- Using state-of-the-art cell-phone-camera technology from two decades ago, take a badly composed selfie in low light – with total disregard for white balance, as noted by flolilolilo.
Shift the color channels, as described by mattdm.
Scribble green over face.
- Shift the color channels. (I "borrowed" mattdm's work.)
- Blur the image.
- Add noise.
- Create a new layer filled with gray, low opacity (~3%).
- Create a new layer filled with purple, color blending, opacity to taste.
- Scribble green over face. (I skipped this step.)
Not "hazy" enough? Wrong shade of purple? Go back to method 1.