So far so good, but I have not been using the recorder as extensively as a should. Interested to know why you ask about 'moist environments' - from a quick web search I can't see any complaints about the recorder acting up in humid conditions. Do you know of any problems?
I'm just worried about a sudden rain, sometimes it comes like a torrent. Doors for SD card and bluetooth are covered with rubber, but the usb-C and batteries aren't. Also these buttons feel a bit "flimsy". Of course you won't record much sounds when it's raining, but for outdoor use - just like cameras - it's always better to have some protection? Water, sand, there are even tiny bugs that enter devices and grow inside (seriously, they do that)!
I don't like the position of the battery compartmentin the F3. Basically, if you use the rails to mount the recorder on any kind of rig, the compartment is impossible to access.
Same here, I strap mine against a pistol grip, and you also need to remove the strap to access the battery compartment. Design and form factor could be better, although it makes some sense as it is...
I note that the manual shows that battery life is massively impacted by phantom power, headphones, backlight etc. With everything off Alkaline batteries should give you 8 hours when recording 2 channels at 48KHz 32bit, but is you have headphones and phantom power on this dops to 2 hours. - I don't have the option for long recording sessions. But if you want an all-day session, probably best to use Lithium batteries or use a power bank to charge the unit - you sacrifice a bit of potability, but some power banks are quite small. This is not really unique to the F3 - a recorder like the Sound Devices Mix Pre will gobble batteries quickly (but that said there are more power options for that recorder and the batteries are generally accessible in a carry case).
I get much shorter times, like 2-3 hours with Alkaline and 1 x 48 V microphone. No lights, mono, 48 KHz. With a pair of AA in reserve it should be enough for most cases but sometimes I'd like to keep it turned on for longer, to catch unexpected sounds with the buffer. From what I've seen, even without recording, batteries are drained quite fast, phantom power most likely a good part of it, but I have only one xlr directional mic, unpowered so I can't compare.
Don't get me wrong, I'm quite happy with this F3, I'm just trying to make sure I have everything "covered" in case I'd use it more extensively.
Where I record, it is normally too noisy except for early morning, so it is not too much of an issue
Noise pollution becomes creepy with this kind of equipment! Our brain is clearly doing a huge filtering work all the time!