Size of image in Lightbox is bigger than actual

I inserted a Lightbox into an article and the thumbnail is visible, however if you click on the thumbnail then the image size after clicking is approx 3 times the size of the actual image stored in the folder.

You can see this at kotov-dartey.com/index.php/en/family#

Click the image link where it shows a computer and belt and you will see what I mean. Please can you advise soonest.


please help!! i tried several ways and have read what is on the forum but it did not work for me.

No, it displays 100% original w/h , tried it in ie9, crome

browse you image directly and see:

kotov-dartey.com/images/family/06.jpg