Owned the S5 all fo 3 days but
The problem from what I can tell was limited almost exclusively to Verizion which right there says that probably, just possible some bloatware verizon stuffed in the phone caused the glitch.
I bought an S5 this past Friday. Coming from an S3 and iPhone 4s (and every iPhone) before that.
(side note: I thought the camera on the S3 was easily as good as the 4s, if not better)
Ok, S5: Camera was "ok", amazing to see images 5200 pixels across. But unfortunately much of the reason I upgraded to the S5 was blown up for several reasons
1) When actually viewing this image 1:1 the images appeared blocky, almost chunky in the fine details. Not blurry. Not noisy. Pixelated almost. Still, there was some decent detail, just not exactly what I was used to.
2) Could not 95% of the photo modes to actually work. All the modes where it took several quick shots and then you could do cool stuff with them... nothing. Only option that ever came up was "best shot" or something. Ok fine. 3 days of trying everything, holding camera still, dog walking through, my kid jumping across the screen. Nuttin. Pissed me off.
3) Lens blur or whatever. Awful. Could only get to work 1/10th of the time, the other 9 times tooks nice photos, but kept tell me not enough contrast between foreground and background. About the only consistent time I could get it working was putting a cup about a foot from the lens, and shoot across the room. Pretty much nothing else worked. Outside, inside, upside, downside.
4) 16gb internal storage. Ok, up to android 4.3, this was really no biggie, just plop in an external SD card and away you go with another 32 or 64gigs of space.
With Android 4.4 you are dead. You are running like iOS where you cannot do ANYthing. It's like the external card is evil. Only 1 or two apps can write to it (the camera and the built in gallery).
No quickpic, no file managers, nothing can copy to, delete from, etc etc, the external SD card.
What is google thinking? Really.
This last killed the phone for me. The only way do anything, filewise, on the external drive was, actually to plug in the cable to my PC and delete / move stuff. No more wifi, no more airdroid, no more dropsync, cheetah sync, quickpic, file manager. Nothing. It's iOS.
I returned it, exchanged it for a 32gb Note3, and while I still have the same external SD writing issue, the internal SD card is fully writeable (which makes no logical security sense if that is Google's thinking -- block external SD where "stuff" is stored, allow fully writeable internal SD where presumably the OS and apps are stored).
So I would highly recommend holding off on the S5 or ANY 16gb android device running 4.4. You will hate it. Google is shooting themself in the foot here and the only reason people aren't screaming yet is because 4.4 is just not widespread enough. Just wait.