First time growing tomatoes from seed and all seemed to be going well however recently iv started noticing various different blemishes on the leaves of different plants. It appears to be getting worse/more noticeable and it’s beginning to concern me.
The plants are otherwise (I think) in a good healthy condition and producing plenty of tomatoes. Pictured below are the various types of blemishes I’m finding on different plants. Would be grateful if someone could tell me what might be wrong with them.