Common mistakes when extruding camera 3D models include uneven depth (distorting proportions), ignoring real-world details (like lens mounts), and skipping edge loops (faceted surfaces).
- **Uneven depth**: Makes the camera look lopsided or unrealistic. - **Neglecting details**: Skipping buttons or lens barrels breaks authenticity. - **No edge loops**: Curved areas (e.g., grips) stay blocky instead of smoothing.
Fix these by using reference photos for depth/details and adding edge loops before extruding curved sections—this keeps shapes smooth and true to the real camera.