A photo shows appearance - not always structure
A photo can show the top of a ring beautifully while hiding its height, the structure of the head, the connection to the shank or the way the stones sit from the side. Building CAD from a photo means interpreting what you see - and understanding what must exist in the areas you can’t.
When can a single photo be enough?
When the construction is familiar and clear, the proportions can be understood, and there are reliable anchor values - a ring size and stone dimensions, for example - one photo is sometimes enough. The question is not how many images arrived, but whether there is enough information for the decisions that shape the piece.
And when is another angle needed?
When there is uncertainty about a side structure, a height, a connection or a significant detail, it is right to ask for another photo. Often a side view or a high three-quarter angle fills the gap. There is no point in imposing fixed requirements when most of the details are already clear.
A reference can be an instruction - or a direction
Sometimes the client wants the photographed construction followed closely; sometimes they say “something along these lines” and leave room for professional judgment. That distinction affects the work no less than the quality of the photo.