CB Advance OPK Question

Kershal

So I usually use test strips but thought this month il go out abit and try Clear blue Didgital Advance,

I completely understand you don't go by the lines on the test ect but I mean how bloody dark does the line have to be before it turns to peak? You can clearly see the test line is darker then the controll line same as it would be on a line test strip blue dye is shit to take photos of its alot more obvious in person, I'm on CD17 and yesterday or today is usually my Peak days I have every other symptom for it to be happening,

Definately don't like these tests I must say.....

And to add I definately fully understand the dye run in blues now it's horrific how bad they are....

Pic of today am and yesterday's pm test to show what I mean