ARRI Alexa Mini vs Sony FX3 – Filmmakers, Watch This!
Can a 10-Year-Old Camera Outperform a Modern One?
Introduction to the Comparison
- The video poses the question of whether a decade-old camera can still outperform one of today's most hyped cameras.
- Instead of typical YouTube comparisons, the presenter tests both cameras on an actual film set for practical insights.
Filming Context
- The comparison takes place during the filming of a western promo titled "Lone Oak," aimed at attracting investors for a full feature film.
- Both cameras are noted to have similarities, such as shooting cinematic footage and offering log profiles (Log C3 for Alexa Mini and SLOG 3 for FX3).
Technical Specifications
- Both cameras are equipped with time code, monitor outputs, and sufficient I/O options, making them suitable for professional use.
- Differences become apparent once filming begins; practical usage reveals unique strengths and weaknesses.
Sensor and Image Quality
- The Alexa Mini features a Super 35 sensor designed specifically for cinema, known for its color accuracy and highlight roll-off.
- In contrast, the FX3 has a full-frame sensor similar to that in the Sony A7S3, providing wider field of view and better low-light performance.
Cinematic Characteristics
- While both cameras produce cinematic images, they do so differently: Alexa Mini offers filmic softness while FX3 provides modern versatility.
- The FX3 is highlighted as not just an entry-level camera but as a serious tool used in high-quality productions like Apple TV's "Severance."
Low Light Performance
- The FX3 excels in low light due to its dual native ISO capabilities (800 and 12,800), making it preferable for nighttime shoots.
- Conversely, the Alexa Mini struggles in low light situations with only one base ISO at 800; significant lighting is required to achieve desired results.
Resolution Capabilities
- The Alexa Mini records up to 3.4K resolution with additional licenses needed for ProRes or RAW formats.
Camera Comparison: Alexa Mini vs. Sony FX3
Dynamic Range and Usability
- The testing focuses on dynamic range, with the Alexa rated at approximately 14.8 usable stops, providing significant flexibility in post-production.
- In contrast, while Sony claims the FX3 achieves over 15 stops, real-world performance is closer to 12.6 stops; the Alexa is deemed superior for clean output.
- The FX3 allows quicker adjustments to lighting changes and tighter timing during shoots compared to the more time-consuming setup required by the Alexa Mini.
Cost and Value
- The ARRI Alexa Mini has been discontinued but can be acquired for $15,000 to $20,000; it retains its value well due to brand reputation.
- The Sony FX3 is available new for around $4,000, offering substantial value given its capabilities.
Practical Application in Filmmaking
- For a recent shoot, the Alexa Mini was used as the primary camera for dialogue scenes and hero shots, while the A7S3 and FX3 handled quick shots like behind-the-scenes footage.
- Choosing between cameras depends on project needs: if high-end cinema quality is desired with ample crew and time, go for the Alexa; if speed or low-light conditions are critical, opt for the FX3.
Conclusion: Legacy vs. Efficiency