+The **40d** commonly refers to the [Canon 40D](/wiki/Canon_40D), a robust [digital SLR](/wiki/Digital_SLR) camera. Launched in 2007, it served as a popular choice for enthusiasts, balancing performance with build quality. This model marked a significant step in photographic technology for its time.
+## See also
+- [Digital Camera](/wiki/Digital_Camera)
+- [Photography](/wiki/Photography)
+- [Canon](/wiki/Canon)
... 1 more lines