The original image and a mirror image of it alternate them in a GIF and hey presto! Basic but effective. Like the earliest cinema… When I was a kid there were flip card machines of ‘what the butler saw’ in seaside locations… https://en.wikipedia.org/wiki/Mutoscope
Yes, the original image and a mirror image of the same. I think the old masters were always checking their paintings in the mirror (looking for glaring errors) but they didn’t have modern technology so they weren’t able to do what we can do.
peter robinson fine art 
How on earth do you make her dance Peter?
The original image and a mirror image of it alternate them in a GIF and hey presto! Basic but effective. Like the earliest cinema… When I was a kid there were flip card machines of ‘what the butler saw’ in seaside locations… https://en.wikipedia.org/wiki/Mutoscope
I think I know: It is a gif graphic with an image used left – right reversed 🙂
Yes, the original image and a mirror image of the same. I think the old masters were always checking their paintings in the mirror (looking for glaring errors) but they didn’t have modern technology so they weren’t able to do what we can do.