Talk:Focus Lens/@comment-9872752-20170203125119/@comment-27103322-20170211132142

Well I personally have equiped different Greater Lenses on different Warframes. I primarily use the Zenurik School of Focus, so have it as my Primary. But gain focus in all the schools because I use a variety of Warframes and have a variety of Lenses equipped on them (a fairly even distribution). As the whole School of Focus/Tenno Operator ability is still in Beta and will probably change and evolve. I have kept my options open by not just focusing on one School. I hope DE will evolve the system to encourage a more varied use of all Schools, maybe options to select focus in Loadout prehaps. Maybe each school will have different energy types, so another tear of damage (Damage3.0 - 4.0 maybe?) type can be used in higher missions, or as Scentients are incorperated more as the few we encounter on the Orokin Moon gain resistances, but have non to Tenno Operator abilitys.

 Whatever they do, its all apart of the game and it dosent hurt to try out as much of it as you can, try every School for example.

Your other option is to go to Maroos Bazzar and Trade Focus Lenses you do not want.

It's up to you really. :)