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[0.55.103960] Thermal vision is affected by fog at long range
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Thermal vision is affected by fog at long range and that should not be the case
{F18810} {F18811}


Legacy ID
Steps To Reproduce
  1. Editor
  2. insert a hunter and multiples civilian along the airstrip
  3. Change fog to 100
Additional Information

Event Timeline

CincoSete edited Additional Information. (Show Details)
CincoSete set Category to Visual-Characters.
CincoSete set Reproducibility to Always.
CincoSete set Severity to None.
CincoSete set Resolution to Open.
CincoSete set Legacy ID to 1966294895.May 7 2016, 1:34 PM
Ringo added a subscriber: Ringo.May 7 2016, 1:34 PM

I have no experience from these kind of cameras in real life. But in the article you reference it says:
"it is a good thing that the thermal imager can see through fog to a certain extent."
Sounds to me it is not totally unaffected. Also, the thickest fog in arma is quite thick and would deliver a massive amount of moist in the air. Seems reasonable to me it has a severe impact on the way heat can be read at a distance.

Found this folder from FLIR which backs this up as correct behaviour:

"Humid air acts as a “shield” for infrared

ceeeb added a subscriber: ceeeb.May 7 2016, 1:34 PM

Here is another link, suggesting thermal imaging outperforms visible wavelength in light fog, but is no better in heavy fog.

Currently in Arma3, thermal is no better than visible wavelengths in any fog conditions, which does not match reality described in these links.

nsKb added a subscriber: nsKb.May 7 2016, 1:34 PM
nsKb added a comment.Apr 14 2013, 5:59 PM

It depends on the thermal imager, different wavelengths of light are attenuated by different things. But since ARMA 3 takes places in the future I would assume the NATO thermal cameras would be two color or more. This would mean they would be less effected by atmospheric conditions if the wavelengths they detect were chosen carefully by the engineers.

MadDogX added a subscriber: MadDogX.May 7 2016, 1:34 PM

Mass closing ancient tickets with no activity for > 12 months; assume fixed or too trivial.

If this issue is still relevant in current dev build, please re-post.