Nice and clean. Simple to use. Great photos!
I kinda miss a small logo/text title above menu, "Elena & Ilya Photo" or something. The photography on the front page clearly indicates that the website is about professional photography, but if it wasn't for that, I wouldn't know what the website was about. Branding.
A minor detail, I would suggest going to panel > settings > page (tab) > context, and setting Text Align to "Left / All headers center". I think you will find it gives better balance in your pages about us
As noted by @Martin
, you are using very large "original" photos size at 2400px. Photos look super-nice and sharp on my Macbook retina, and they seem to load "fast enough" here (Thailand), so I don't see this as a problem (for most visitors at least). Images also seem well optimized (compressed) considering how large they are.