Google Photos

Google Photos was just released two days ago.
It offers unlimited storage for files under 16gb.
Great! My m 4/3 camera’s sensor is only 16mb, so I should be able to store all my photos for free :-)

But, it mentions compression.

So I upload a picture:

Original File size: 6.78 mb, dimensions: 4,592 x 2,584

I then downloaded it and noticed the file size was much less:

Google File size: 1.94 mb, dimensions: 4,592 x 2,584

After comparing the images I couldn’t discern any quality loss.