Question

A reader recently sent me these two photos of their young tomatoes. The two images below are of a couple of plants from their container garden in Manhattan.

The question was about the tan spots on the lower leaves.

I think this is simply environmental damage from shifting the tender plants to the outdoors. I think this because the spots are tan, not circular, only on the old leaves, and I do not see other signs of damage. If they follow up, I'll find out if it's continuing to happen- that would change my opinion.

Any ideas?