HELP! Organizer, please delete this thread, issue has been solved / added to article.
DX:HR's FOV could be set to a value that exceeded the max in-game value (as long as you didn't visit that options-page afterwards), and DX:MD's settings, too, are in the Registry:
HKEY_CURRENT_USER\SOFTWARE\Eidos Montreal\Deus Ex: MD\Graphics
But changing the key "FOVCorrection" to something higher does not increase the FOV further. (The value has effect, though: Setting it very low reduces the in-game FOV to the minimum the game allows.)
You can see that it's about 90-100° by standing with your back in a 90° corner and being able to *almost* see the left and right walls of the corner.
Are there any solutions to this? Any tricks? Will the devs hear us and increase the max value, a task that can't take more than 20 minutes? Does anyone know?
For the record: I also made a Steam thread, but I guess we should keep the discussions separate. Because here, we'll probably be entirely constructive and tech based, while there we'll have the usual meddling of people who hate other people's freedom. http://steamcommunity.com/app/337000/discussions/0/355043117526379308/
Well, that thread spawned an obvious but brilliant idea: Cheat Engine. Assuming that the in-memory value is the same as the one written to the Registry, we could step through the FOV slider via keyboard to achieve a few reliably reproducible positions, write down the Registry values (possibly having to quit each time, not sure), and then finally hunting for these values in memory by changing the FOV slider.
A Steam friend's friend made a working Cheat Engine script. I edited the FOV section accordingly. It's a bit rough, but we're working together on this, right?
Thanks to Garrett for properifying everything. But alas, I had to remove the Cheat Engine script because the one who gave it to me and had OK'd the publishing (I have screenshot/save of Steam forum page.) told me hours later that his friend who made it does not approve and to remove it. D: