Apple leaves have grayish-brown-blackish spots. This started about mid summer and maybe was on one tree last year.  Trees look unhealthy. Premature leaf drop is occurring.  Also, fruit is dropping prematurely. This fruit seems over-ripe too soon. Fruit also has various defects.  I'm afraid fruit isn't healthy enough to store for winter consumption.

This is occurring on all my trees: three honeycrisp, one golden delicious, one orange cox pippen & one northern spy tree.

I sprayed during the year, at mostly 14 day intervals. I generally use Captan with Imidan.  Topsin M after petal fall for control of fly speck & sooty blotch control. This year I also put on calcium chloride flakes because I think I had Bitter Pit in previous year's honeycrisp crop. (I did not put this calcium on my golden delicious tree).  

Thank you for any diagnostic & treatment help you can give me.