Site Images

If I view the images on my phone or tablet they are blurred or clear depending on which way I hold it......noticed it a few months back😊

No grey borders and very clear, viewed on iPad

On my iPad. If viewed in the normal landscape mode, they are fine. If I turn it so they are in portrait they are fuzzy with grey bars top and bottom. It seems that it is designed for landscape only. I would have thought on a computer it would be landscape by default. 

SteveL the images are from my laptop which are all in landscape but I've checked my phone and tablet and they are all the same, all blurred 

Perhaps it's a device / browser problem. I'm using a 7 year old iPad using safari.

edit just tried it using chrome and again fuzzy with bars in portrait, fine in landscape.