What is wrong with this picture?

[Flying Pencil]

Originally Posted by Sven

I found a picture ( may not be the best one) where I think the bomb bay consists of 2 separate bomb storages, and both have 2 doors, behind each other.

Correct me if you see different, also, I dont know if this is to be found on all Do17's.

PS: I'm looking for an old Do-17 scale model I once build.

You are correct, they are split doors, fore/aft.
They are also not hinged on edge, but retract into the bay partly.

In your photo, the froward bay probably has a fuel tank, thus only the aft is open.

BTW, Great find!