A while back I put a Gingerbread [Deck] rom on my HTC EVO, and it came with another camera app (apparently the one that ships with the new Nexus S). While it does have some fun little features, I don't like it nearly as much as my original one, the main feature being spot focus on a touch to the screen. I have checked out third party camera apps, but none have quite done it for me. Does anyone know how I can get my stock camera app back?
The most accessible way to get a copy of the app itself would probably be to download a stock ROM in zip format and just extract the HTC Camera app (
/system/app/HTCCamera.apk). A de-odexed version would probably be easiest, but in theory you could extract both the .apk and the .odex file and put them on your device if you wanted.
To be honest, though, I'd be pretty skeptical about the HTC Camera working on your ROM since Deck isn't Sense-based. You can give it a shot, but I'd wager it relies on some Sense framework files (never tried it myself).
Did you take a Nandroid backup or a Titanium backup before flashing? If you have a Titanium backup, you can try restoring the Camera app from there (app only, data can be incompatible). If you didn't backup with Titanium, you could do a new Nandroid backup, restore to the previous one, create the Titanium backup and then restore the new Nandroid backup. After this restore the app from the Titanium backup.
Since this is a system app I can't guarantee the compatibility of the app, but you can try and if it fails/is buggy, you can revert with Nandroid.