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RayR · July 17, 2017

I think gorbelly is right that it may be broadmites, the damage pattern on the tomato and beans especially are too similar in appearance. You can't see mites with your naked eyes, you need a magnifier of at least 10X. The white paper test my work, put a piece of white paper under a leaf and slap the leaf with your other hand and see if you can shake loose any mites onto the paper. If you see any tiny specks moving around on the paper, then you have mites for sure.
I know Septoria too well and it doesn't look like it. Aphid damage can many times cause brown spots on leaves that mimic the general appearance of a Septoria or bacterial lesion. Septoria lycopersici will infect tomato leaves and rarely related plants like peppers or eggplant.

July 17, 2017	#11
RayR Tomatovillian™ Join Date: Jun 2010 Location: Cheektowaga, NY Posts: 2,464	I think gorbelly is right that it may be broadmites, the damage pattern on the tomato and beans especially are too similar in appearance. You can't see mites with your naked eyes, you need a magnifier of at least 10X. The white paper test my work, put a piece of white paper under a leaf and slap the leaf with your other hand and see if you can shake loose any mites onto the paper. If you see any tiny specks moving around on the paper, then you have mites for sure. I know Septoria too well and it doesn't look like it. Aphid damage can many times cause brown spots on leaves that mimic the general appearance of a Septoria or bacterial lesion. Septoria lycopersici will infect tomato leaves and rarely related plants like peppers or eggplant.