Images & responsive design

Hi guys,

Recently I asked a photographer to help us create new images for our website.
Now she made a few landscape-sized images that I added as a background slideshow: 7-Days Programs (home) - Island Yoga - Yoga Island Retreats

On a desktop computer, those pictures are displayed perfectly. On mobile, they’re not due to the landscape ratio. I was thinking to crop/ resize the images and make it portrait-size, but that obviously affects the desktop display!

Is it somehow possible to upload a landscape-sized image that is used for desktop display and portrait-sized images for mobile display. I.e. work around the responsive design in some cases?