There used to be more snapshot hints there:
[ overgrow.com/t/where-have-all-the-trichomes-gone/5712 ]
Where have all the trichomes gone?
Beware of insufficient mechanical quality as this can cause chromatic aberrations defeating the purpose, like determining colour between clear, milky and amber. Personally i consider myself lucky to have found a decent unit in some local store - an exception. 2 Mpx sensors feel border line, aim for 5 and why not WiFi (wireless) options, then also good lightning which is always essential, plus convenient X-Y precision positioning if that's an option. Otherwise multiple snapshots are likely to be required just to get 1 picture worth posting...
Good day, have fun!!