Conclusion: Recap the main points. Highlight the benefits of using FASTCAM 72, encourage legal use, and perhaps a note on future versions or alternatives. Make sure to keep it positive and informative.
Need to check if FASTCAM 72 is still supported in 2023 or 2024. If there are newer versions, maybe mention that 72 is an older version but still functional. But the user wants 2021, so focus on that.
Potential issues: If FASTCAM 72 isn't available, but the user might still want information on it. So proceed as if it is available or provide information based on similar versions.
Download Guide: How to download it legally. Visit the official website, perhaps a step-by-step process. Mention system requirements like OS compatibility, hardware specs. Also, note that pirated versions should be avoided, so emphasize legal downloading.
Also, consider that the user might encounter errors during download/install, so troubleshooting tips should be specific. Maybe include steps like checking the download speed, verifying the source, etc.
Need to ensure the article is comprehensive but not too lengthy. Balance between detail and readability. Use concise explanations for each point.
Check for keywords like "FASTCAM 72 Download 2021", "legal download", "CAM software features", etc., to ensure SEO. Maybe include a meta description summarizing the article.
Now, start drafting each section with these points in mind.