Tomato Diseases - Septoria Leaf Spot

When I was harvesting the crop yesterday, I saw that some of my tomatoes have a disease.  Based on a comparison of what I see online, it appears to be Septoria Leaf Spot.

The pictures below were taken yesterday of two of my tomato plants.

Based on my reading, it's a disease in the soil that affects tomato leaves and stems with the indicator being spots like these.  Typically, it starts low on the plant and increases in elevation.  As it further develops on the plant, the spots grow and the leaves will defoliate the plant causing you to have sunscald and fruit cracking.

Solution: Don't allow the tomato plants to remain after the season if you leave your vegetation for future years.  Use a copper fungicide to help inhibit the disease in the plant.