Let’s address the elephant in the room. Canon is a hardware company first. Their SDK documentation is notoriously sparse , technical , and unforgiving for beginners.
The true measure of bad documentation is not what it says poorly, but what it omits entirely. The Canon EDSDK documentation suffers from three catastrophic gaps: canon edsdk documentation
EDSDK is a wrapper over PTP (Picture Transfer Protocol) over USB. The official PTP-IP specification (ISO 15740) is publicly available. By reading PTP docs, you can deduce what EDSDK is doing under the hood. Let’s address the elephant in the room
Furthermore, Canon uses documentation ambiguity to enforce its product segmentation . High-end cameras (1D, 5D series) expose more SDK properties than consumer bodies (Rebel series), but the documentation rarely clarifies which functions work on which models. A developer must discover through trial and error that EdsSetPropertyData for kEdsPropID_WhiteBalance might work on a 5D Mark IV but not on an M50. This ambiguity benefits Canon by preventing a “write once, run everywhere” ecosystem, forcing developers to buy multiple camera bodies for testing. The true measure of bad documentation is not