The partially shredded photo of Dexter's mother changes lengths between shots.
Arthur Mitchell is seen finishing lumber from fresh cut logs. It takes months to dry and cure lumber. In Florida's climate it would also require a kiln.
A minor collision with a deer would not necessarily result in damage to a vehicle like a large van with a steel bumper.
The deer was not hit with enough acute force to do severe, local damage to the deer or the van.
While camping with Cody, Dexter was setting up a tent. As he starts to hammer what was clearly a plastic tent peg, we hear him pounding a metal peg.
Dexter sits at the table and takes a bite of an apple. There is the crunching sound of him biting into the apple before his teeth are even fully on it.
When Dexter gets out of his car at Farrow Studios, a crew member is visible in the driver's side mirror as he exits.
On Dexter's camping trip, we (supposedly) see downtown Miami. There are absolutely no wild areas left within sight of Miami and the only island in sight are completely built up with luxury homes.
Up until 49m in to this episode (Slack Tide (#4.7)), Louisville Kentucky is mentioned several times this season as a site of Trinity's murders. But it is never marked on the map until after Lundy has passed and Deb is working the case.
When Dexter and Arthur are out in the woods to cut down the tree, Arthur brings with him a finish carpentry saw. These are not used to cut green wood.