Product image clarity issue

[Marwan Nawaz]

Unable to rectify image clarity issue that the site is facing. I've included images of what I see versus what it should be like.  This is happening at www.zuriador.com (Prestashop version 1.6.0.7) where ever product images are being called, starting from the product listings page right through to checkout, on all Apple devices (desktops, laptops, phones and tablets). The sharpness is worst on the iPhone. And even worse on Windows and Android based systems. Is this a problem being caused by the theme module or the image loader module?