Most growers look at the color of the trichomes with a microscope to determine readiness. Unfortunately we can't see the color of the trichomes in those pics.
I have a jewelry loupe. The trichomes are cloudy and a little bit of amber. I am just confused on the pistils if more of it needs to be brown. It is around 50 % brown pistils.
@fto.profound Got it. Sounds like you're close - if not ready already. What strain are you growing and how many days has the plant been in flowering? Here's an article that should also help clarify things a little more: