True 1:1 Axial Mouse Setup – A modern approach to fixing high FOV tracking and vertical sluggishness

Hi everyone,

I wanted to introduce a new way of aiming with a mouse that completely breaks away from old default settings. Instead of just copying what pros used years ago on different formats, this approach uses a modern, first-principles method. It is entirely designed around human vision, raw hand-eye coordination, and how modern 3D engines warp the screen.

The core issue with traditional setups (like a 1.78/1.33 coefficient with 1.0 vertical sensitivity) at a high FOV is that they force your brain to lie to your hands. Because high FOV stretches the image horizontally, moving your crosshair a physical inch vertically requires a massive, tensed arm movement compared to moving it horizontally. Your hand is constantly fighting the engine’s lens compression.

By utilizing a 0.00 Monitor Distance Coefficient (locking pixel precision to the exact center of the screen) and mathematically increasing the Vertical Sensitivity Multiplier by exactly 0.006 per FOV step, we completely flatten the lens distortion for your muscle memory.

Here is the complete guide and exact math to replicate this setup:

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# The "True 1:1 Axial Setup" (16:9 & 21:9)

### 1. In-Game Settings
* Field of View (FOV): 100 to 120
ADS Field of View: Affected (Minimizes visual recoil)*
Weapon Field of View: Wide (Shrinks the weapon model for maximum peripheral visibility)*
1st Person Camera Movement: Least (50%) (Prevents erratic screen shaking)*
* ADS Sensitivity Type: Relative
Monitor Distance Coefficient: 0.00 (Locks pixel precision exactly at the center of the crosshair)*
ADS Sensitivity Transition Timing: Gradual (Synchronizes FOV and sensitivity fluidly)*
Mouse Smoothing / Filter / Acceleration: OFF / 0 (Guarantees pure raw sensor data)*

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### The Scaling Table (3 Decimal Places)
Because a high FOV stretches the image horizontally, the vertical multiplier must scale up by exactly 0.006 per FOV step:

* Recoil Control: You control the upward kick effortlessly with minimal finger movements instead of tensing up and dragging your entire arm down the mousepad.
* Tracking: Your wrist remains completely loose. Diagonal mouse movements finally match a 1:1 ratio of what your eyes see on the screen.

| Main FOV | Vertical Sensitivity Multiplier | Status |
| :---: | :---: | :--- |
| 100 | 1.192 | |
| 101 | 1.198 | |
| 102 | 1.204 | |
| 103 | 1.210 | [Ideal Value] |
| 104 | 1.216 | |
| 105 | 1.222 | |
| 106 | 1.228 | |
| 107 | 1.234 | |
| 108 | 1.240 | [Ideal Value] |
| 109 | 1.246 | |
| 110 | 1.252 | |
| 111 | 1.258 | |
| 112 | 1.264 | |
| 113 | 1.270 | [Ideal Value] |
| 114 | 1.276 | |
| 115 | 1.282 | |
| 116 | 1.288 | |
| 117 | 1.294 | |
| 118 | 1.300 | [Ideal Value] |
| 119 | 1.306 | |
| 120 | 1.312 | |

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### Solving the Engine's "Invisible Zoom Bug"
A hidden flaw in the Call of Duty engine is that the exakt dasselbe visier (the exact same optic) on two different weapons—even within the same class—has a slightly different zoom factor due to the weapon model's unique 3D camera offsets.

* Traditional Setups (1.78 / 1.33): They calculate mouse speed near the outer edges of your monitor. When an optic's zoom shifts even slightly between weapons, the entire sensitivity curve shifts with it. Your tracking subtly changes from gun to gun, disrupting muscle memory.
* True 1:1 Axial Setup: With the 0.00 Coefficient, pure focal length scaling applies. The engine calculates your sensitivity rigidly for the absolute center of the crosshair (0% monitor distance). If a weapon's zoom varies, the game automatically slows down your mouse in the background by the perfect fractional percentage. The pixel distance on your screen remains identical on every single gun.

### Ultrawide Monitor Compatibility (21:9)
Through Hor+ scaling, the vertical height and center pixel compression on a 21:9 ultrawide remain identical to a 16:9 monitor (the engine just renders extra peripheral vision on the far left and right edges). Because the 0.00 Coefficient completely ignores the outer margins and anchors your mouse at the dead center, this scaling table works with the exact same 1:1 precision on ultrawide setups.

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Give it a couple of days of training to let your brain adjust to the liberated vertical axis. Let me know your thoughts or if you have any questions about the logic behind it!