To be honest, these photos are useless.
One clear, close up picture taken under normal light would help so much (and without the loupe).
As long as you have roughly 95% brown pistils, you are in the harvest sweet spot. Judging harvest maturity solely based on trichome colour has many pitfalls, - some strains will never have amber trichomes, while others will have 75% amber after only 4 weeks of flowering.
Waiting until all the pistils are brown will give you flowers with degraded THC, but with elevated levels of CBD and CBN, two non psychoactive cannabinoids, that will give you a heavy and sleepy affect, with diminished psychoactivity due to the THC in late picked flowers having broken down into CBD and CBN.
If you prefer a more clear mind trip high affect, harvest at around 95% brown pistils, and if you prefer a sedating body stone, wait until all the pistils have turned brown. Harvesting by pistil colour is a more accurate way to judge flower maturity, as pistil colour will reflect flower health and it is flower health that determines cannabinoid composition, not trichome colour on its own.
Hope this helps,...........
Organoman.