Mostly wanted to make this so I can link it to people if they need it.
So, to do camo cloak cancel most will probably be aware of the one that uses firing your weapon to cancel it as early as possible, but, there is a way that cancels it at the moment of activation, which fully negates a cooldown from happening, meaning it is back up as soon as you exit cloak, heres how to do it.
To begin, you want to press ability, wait for the moment your marine presses the button on his gauntlet, then immediately melee, then immediately backstep to get out of the melee animation quicker, in the video linked, the timing that I use is the sound of bolt carbine shots going off as the tempo for Ability>Melee>backstep.
Why would one use camo cancel you may ask? because it activates all perks that proc off of manually activating it, such as perks like:
Purification, to restore all contested hp.
Ambush/targeted shot, for a massive damage boost.
Lingering concealment/persistence for repositioning/massive survivability and stagger resist.
While also having back up in your back pocket for emergencies.
A note, the damage bonus you get from camo cloak lies to you, it is not "on the next hit" like the text says, it is actually on the next hit, AND for 2s afterwords, meaning every shot/melee hit gains that damage buff for the duration, a good indicator for when it is still up is with lingering concealment, if you are still invis after breaking camo cloak, you still have the damage buff.
Be careful, however, when used in rapid succession, upon the 4th use in 10s, it will begin directly eating an increasing percentage portion of your camo cloak charge with each subsequent use, then continue draining as normal, to reset this debuff refrain from using camo cloak for 10s.