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In Metro 2033 your gas mask uses filters. When a filter is getting close to being used up, your vision is obscured, mostly around the edges.

Is there a way to manually change filters so that you can clear up your vision earlier than when the filter completely runs out?

2 Answers 2

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To manually change your gas-mask filters, press G (default layout).

Source: Metro 2033 default key-binding

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  • I saw that it says that but I know I've tried it. Are there certain times when you are allowed to change filters?
    – Kecoey
    Sep 11, 2013 at 15:43
  • What I read around the net: 1) Check if you have filters available. 2) Filters have varying amounts of durability (time). If the current filter has more durability then the rest, a change would not happen. 3) try to tap G twice. 4) try to hold G. For further testing, I would have to reinstall the game...
    – 5pike
    Sep 12, 2013 at 6:33
  • Ok cool. I did notice some seemed to last longer than others. Thanks
    – Kecoey
    Sep 13, 2013 at 0:21
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Press down once on the d pad..

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