blurry? LOL it's near impossible to take clear pics with a clip on phone thing... take 10 and 1 might be clear. the amount of zoom magnifies our unsteady hands.
Bud density
Pistil coloration
Trichomes coloration
Use all three to figure out when you want to harvest. If new to it, explore early-middle-late... figure out what you like. later is a more sedative effect, supposedly. it's difficult to rely on this sort of self-reported information.... it's usually impacted by any number of unrelated factors. Bottom line is you'll recognize what you prefer.