What causes tomatoes to have a dull skin, without a sheen (besides genetics)? Assume the variety is supposed to have smooth, shiny skin, as most do.

Here are some affected Red Beefsteak fruits, with a regular tomato of another variety at the top for comparison. They seem small and dry; the skin is kind of leathery looking. It's the only variety in the garden I've seen like this, this year. I suspect maybe it needs more nitrogen, copper, or potassium, but it's hard to say. Nitrogen is supposed to help leaves be more shiny, anyway (not sure about fruits). Has anyone seen this before? The plant seems to be producing fine, and doesn't look diseased—but it is a little small.

Also, one of the fruits has pitting on it. I wonder if that's from stink bugs (haven't seen any, though).