Thanks for quick answer. I dont understand why using vertical images could be an issue here but lets do some testing with horizontal images. Like I said before my goal is to have fullscreen photo no matter the resolution that people will have. I would like to use images around 2560px for that presentation. But like You said I performed experiment…
Here -> https://wandzelphoto.com/2015/03/24/parallax-problem/ – you have result
I posted images from 500px up to the 3000px all in parallax no movement option. If you use image component and the image is 1920px and my monitor is like 2560px the image will no to more than 100%. Since we have not a lot of monitors more than HD I would like to have this option to fit the image to 100% of client explorer resolution.