Summary:

Night vision goggles in DayZ have unlimited focus: everything from your own hands to the horizon is sharp. Real night

vision goggles have a fixed focus set by the objective lens. Focused for distance, as they are for walking and

looking around, anything within about a metre is clearly blurry. Please add a near blur (depth of field) while

looking through night vision goggles.

Current behaviour:

- With NVGoggles on, the weapon, iron sights, hands, inventory items on the ground and the map are all perfectly

sharp.

- You can aim with iron sights through night vision goggles as if they weren't there. This makes iron sights plus

goggles a full night fighting setup.

How it works in real life:

- Goggles like the PVS-14 have a focusable objective lens (about 25 cm to infinity) and a fixed f/1.2 aperture, so

the depth of field is shallow. Set for distance (the normal setting when moving), anything close is out of focus.

- The front sight post of a rifle is about 50–80 cm from the eye, so iron sights are blurry through goggles that are

focused for distance. On top of that the goggle sits in front of the eye, so a normal cheek weld behind iron sights

isn't possible.

- That's why soldiers aim with an IR laser, a night vision or thermal scope, or a red dot / holographic sight with NV

brightness settings. A red dot works through goggles because its dot is projected at infinity, so it is in focus

together with the target.

Requested behaviour:

1. While night vision goggles are lowered and powered, apply a near blur: everything closer than about 1 m is blurry,

with sharp focus from about 2–3 m to the horizon.

2. Iron sights look blurry through goggles (front post, rear sight and the weapon itself).

3. Red dot and holographic sights keep a sharp dot, since it is projected at infinity (it may need a lower brightness

so it doesn't bloom). The housing around it can blur.

4. Night vision scopes (NVG scope, thermal) are unaffected: they have their own optics and focus.

5. Optional: a "focus near" toggle on the goggles (like turning the objective ring) that makes close things sharp and

the distance blurry, for reading a map or working on items. Switching back takes a second.

Why:

- Realism: this is the most noticeable thing night vision does differently from the human eye, and DayZ already

simulates tube colour, grain and battery use.

- Balance: night vision is currently a complete solution for night combat on its own. With the near blur, fighting

at night needs a fitting sight as well (red dot / holo, or a night vision scope), which makes those items more

valuable and makes goggles plus iron sights a weaker setup.

- Readable gameplay: close items being blurry is easy to understand and doesn't hide anything at distance.

Technical note:

The engine already has a depth of field override that scripts can drive: `CGame.OverrideDOF(enable, focusDistance,

focusLength, focusLengthNear, blur, focusDepthOffset (3_Game/Global/Game.c:1378`), wrapped by the post process

manager as PPEDOF 3_Game/PPEManager/Materials/MatClasses/Exceptions/PPEDOF.c). It is already used for depth of

field while aiming down optics 3_Game/PPEManager/Requesters/PPERCameraADS_Opt.c:43). The night vision requester

PPERequester_CameraNV) could set a near blur through the same PPEDOF exception while goggles are active, with the

red dot / holo exception handled in the ADS requester.