One major use case for "convert a bunch of photos into a model" is 3D printing. Often you have an object -- maybe a part which broke and needs to be replaced,

One major use case for "convert a bunch of photos into a model" is 3D printing. Often you have an object -- maybe a part which broke and needs to be replaced, maybe a tooth surface which you're making a crown for -- and you need to turn the object into a model and then create a new object.