There is an image on Wikipedia showing dielectric filters change the colour as they are tilted against incident light:
This image only has four frames. As you tilt a dielectric filter will the colour change be gradual or will it be abrupt? What sort of range of change can be expected?
Do all dielectric filters have this property, or do I have to search for a specific one? When I searched for places selling dielectric filters all I got was dichroic filters, and those do not seem to have the same property, but I've never held one in my hand.
Where do I get a filter that exhibits angle-of-incidence based colour change, inexpensively to use in experiments with colour? I would like to see how different objects look in different spectra. This is for use in one of my hobbies, which is painting, but my guess is that this could be useful as an experiment to physics students in general.
I have spent an hour browsing the internet and half an hour on the physics SE, but I have not found a similar question. Thanks for reading!
(edit: image link was wrong)