bob dobs,

You are correct. What's more is that some folks put tomatoes in window sills to get them to ripen and you are better off putting them into a bag because it is a released gas that ripens the fruit and putting them in a bag concentrates the gas.

Further sun can damage fruit or cook it. I take of fruit after I get some color and let it ripen on my tomato table. This way it last longer and doesn't become bug fodder.

One little difference is that sometimes it can effect the color of the ripened fruit. White tomatoes tend to be more yellow when they are in the sun and whiter when under leaves.

Also full ripening on the vine can affect flavor in some circumstances but I have noticed little difference.

Greg