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Instructions to adjust FOV for proper iron sight zoom when fDefaultWorldFOV is set to greater than 75
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=== THIS IS NOT A MOD ===
=== Instructions to adjust FOV specifically for proper iron sight zoom when fDefaultWorldFOV has been changed to greater than default of 75 ===
= Default values
fDefaultWorldFOV = 75
fDefault1stPersonFOV = 55
= Suggested values
fDefaultWorldFOV = 90
fDefault1stPersonFOV = 40
The fDefaultWorldFOV function will set FOV for all screen elements. If screen elements have their own FOV function, their FOV values will be adjusted according to fDefaultWorldFOV proportionately. For example, When changing fDefaultWorldFOV from 75 to 90, the fDefault1stPersonFOV default value of 55 will appear to change to something like 60 or 65. This will make the gun appear far out front. This effect is especially obvious when aiming down the sight with iron sights. It seems we're looking down the sights from behind the gun buttstock as if instead of bringing the gun to our shoulder, we brought it forward by extending our arms. Makes no sense, right? If you did like me and changed fDefaultWorldFOV to 90, then changing fDefault1stPersonFOV to around 40 will fix this anomaly.
If you also use mods that change the zoom level for iron sights, or remove zoom completely for iron sights, and also change fDefaultWorldFOV to greater than default 75, the problem will be that much more obvious and the fix will be that much more appropriate.
I modified zoom FOV for most guns in my game. I set it to 70 in most cases. This means when I aim down the sights, FOV changes minimally from 90 to 70, instead of from 90 to whatever it was, most around 40-55. But this small FOV change is enough to give the illusion that I bring up the gun to the shoulder, without giving me a completely unrealistic zoom from some piece of metal attached to my gun. If I want to zoom in for real, I'll install the scope mod on that hunting rifle. Anyways, that's when I noticed the iron sight zoom problem, and started to figure out a fix. It's a simple fix, everything's there already, just needed to figure it out.
The problem occurs because the zoom function specifically acts on fDefaultWorldFOV. This works well with default values, the gun will appear to be brought back to the shoulder when aiming down the sight, since world FOV shrinks thus also shrinking FOV for all screen elements, including the gun. However, the gun doesn't actually move forward or backward, it merely appears to because of a change in its FOV value. If we remove zoom altogether, the gun will remain at its original distance, but still be brought up to aim, so it appears to be far out front. Maybe it's possible to assign the zoom function to only the gun, but I don't know how to do that.
A side effect of lowering fDefault1stPersonFOV as we're doing here, it will also reduce mouse sensitivity. Adjust accordingly once FOV functions have been adjusted to taste.
I suggest changing FOV settings in all ini files, including default ini files in main folder.
For help, this link: http://www.tweakguides.com/Fallout3_8.html
I'm not affiliated with Tweak Guides. It's just a convenient resource.
Martin Levac
=== Instructions to adjust FOV specifically for proper iron sight zoom when fDefaultWorldFOV has been changed to greater than default of 75 ===
= Default values
fDefaultWorldFOV = 75
fDefault1stPersonFOV = 55
= Suggested values
fDefaultWorldFOV = 90
fDefault1stPersonFOV = 40
The fDefaultWorldFOV function will set FOV for all screen elements. If screen elements have their own FOV function, their FOV values will be adjusted according to fDefaultWorldFOV proportionately. For example, When changing fDefaultWorldFOV from 75 to 90, the fDefault1stPersonFOV default value of 55 will appear to change to something like 60 or 65. This will make the gun appear far out front. This effect is especially obvious when aiming down the sight with iron sights. It seems we're looking down the sights from behind the gun buttstock as if instead of bringing the gun to our shoulder, we brought it forward by extending our arms. Makes no sense, right? If you did like me and changed fDefaultWorldFOV to 90, then changing fDefault1stPersonFOV to around 40 will fix this anomaly.
If you also use mods that change the zoom level for iron sights, or remove zoom completely for iron sights, and also change fDefaultWorldFOV to greater than default 75, the problem will be that much more obvious and the fix will be that much more appropriate.
I modified zoom FOV for most guns in my game. I set it to 70 in most cases. This means when I aim down the sights, FOV changes minimally from 90 to 70, instead of from 90 to whatever it was, most around 40-55. But this small FOV change is enough to give the illusion that I bring up the gun to the shoulder, without giving me a completely unrealistic zoom from some piece of metal attached to my gun. If I want to zoom in for real, I'll install the scope mod on that hunting rifle. Anyways, that's when I noticed the iron sight zoom problem, and started to figure out a fix. It's a simple fix, everything's there already, just needed to figure it out.
The problem occurs because the zoom function specifically acts on fDefaultWorldFOV. This works well with default values, the gun will appear to be brought back to the shoulder when aiming down the sight, since world FOV shrinks thus also shrinking FOV for all screen elements, including the gun. However, the gun doesn't actually move forward or backward, it merely appears to because of a change in its FOV value. If we remove zoom altogether, the gun will remain at its original distance, but still be brought up to aim, so it appears to be far out front. Maybe it's possible to assign the zoom function to only the gun, but I don't know how to do that.
A side effect of lowering fDefault1stPersonFOV as we're doing here, it will also reduce mouse sensitivity. Adjust accordingly once FOV functions have been adjusted to taste.
I suggest changing FOV settings in all ini files, including default ini files in main folder.
For help, this link: http://www.tweakguides.com/Fallout3_8.html
I'm not affiliated with Tweak Guides. It's just a convenient resource.
Martin Levac