Price
The price of a DOF adapter ranges from tens of thousands of US dollars for a professional solution to less than a hundred by using parts available from a local hardware store. The pricing of a DOF adapter unit also depends on the material and technologies used. For instance, a relay lens system must be added if the adapter is to be directly mounted to a camera's body (bypassing the standard lens, as if on a Canon XL1 or XL2 and the Sony EX3). Also, a prism system that is used on some adapters that correctly reorients the image rightside-up adds to the cost.
Read more about this topic: Depth-of-field Adapter
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