Steady Aim is a useful perk for players who find that they fire from the hip often. One of its biggest advantages is that it allows for more accurate fire without sacrificing mobility, although pistols and submachine guns already have full mobility while aiming down the sights. While it is not as common, some players also use this perk with sniper rifles, which allows more accurate hipfire at close range when a switch to a secondary weapon is not an option.
Steady Aim is completely unchanged from the other games except for the addition of the Pro Perk. The Pro version allows the player to hold their breath twice as long while using a Sniper Scope or Thermal Scope, replacing Iron Lungs. It is especially recommended for weapons using the Akimbo attachment, which prevents aiming down the sight, making it both useful and easier to get the Pro version. Using Steady Aim with a shotgun will make it more accurate by reducing its spread, but only when not using ADS. This isn't always beneficial, as more care needs to be taken when aiming.
When playing in third person gametypes, this perk will also make the cross-hair smaller while ADS. Steady Aim is one of the few perks for which the standard and Pro abilities seem diametrically opposed; holding one's breath only applies to sniper scopes and Thermal Scopes and is used for long range accuracy, while firing from the hip is a close quarters tactic and is very inaccurate with sniper rifles, even when using Steady Aim. It seems to have been designed with sniper secondaries in mind, as Akimbo Handguns or Machine Pistols with Steady Aim are extremely effective at close range, especially with Stopping Power and/or Sleight of Hand.
Steady Aim returns as a Tier 2 perk in Black Ops, and its effects are unchanged from other games, reducing hipfire spread by 35%. It does have a new Pro effect, however. With Steady Aim Pro, the player raises his or her weapon faster after sprinting or knifing. Upgrading to the Pro version costs 3000, and is very useful for knifing classes or when using Dual Wield weapons.
Steady Aim is an unlockable perk in Survival Mode and Multiplayer. It maintains the same perk icon from Call of Duty: Modern Warfare 2 in Survival Mode, but has a new one in multiplayer. Its effects are unchanged from Modern Warfare 2, reducing hip-fire spread by 35%.
The Pro version, which can be earned after getting 120 hipfire kills while using Steady Aim, allows the player to have their weapon ready faster after exiting sprint, like in Call of Duty: Black Ops.