Playing the PS4 version of BioShock. The missing water effects are definitely noticeable. In the part that's been debated here with the plane fuselage, the absence of water effects allows you to clearly see the flat "wall" at the back of the plane which should be obscured. I noticed similar problems in the room where the security alert goes off; the waterfall should look much more waterfall-ish but it just looks like a flat texture flowing over a rounded surface.
Another annoying thing I noticed is that there are various problems with the splicers' dialogue. The ones with scripted dialoguelike the splicer with the baby carriage and the two shouting at each other through the door in the Kashmir Restaurantused to loop their dialogue infinitely, but it now only plays through once and then they fall silent. (For this reason I only caught the last line from the latter two splicers as I entered the room and never heard the rest.) The generic splicers are more chatty in places they shouldn't be, including where they're meant to surprise you. (You shouldn't hear them gabbing while they're waiting in the wings during Ryan's first speech right before you escape to the Medical Pavilion, but you do.) They also always sound like they're right on top of you even if they're in another room.
Also audio-wise, the audio diaries appear to have had the "scratchy tape" effects removed and now sound clear as a bell.
There are also some textures that stay in ultra low-res until you're right on top of them. Aside from that and the water issues the game looks great so far, but I can't help thinking these are illusion-breaking issues that would have been fixed had it been Levine or members of his team who worked on this.