If you need to crop and scale an image in Internet Explorer and provide support back to IE9, you can do that by wrapping the image in an <svg>, and using the viewBox and preserveAspectRatio attributes to do what object-fit and object-position do. Snippet from the great Sara Soueidan blog http://www.sarasoueidan.com/blog/svg-object-fit/

svg-object-fit.html

<svg width="x" height="y"
     viewBox="0 0 imgX imgY"
     preserveAspectRatio="<align> <meetOrSlice>"
     aria-labelledby="title" aria-role="img">
 
     <title id="title"> img alt here &ly;/title>
 
    <image xlink:href="..." width="100%" height="100%">
    </image>
 
</svg>