Between the FX3 and FX6, the FX3 comes out ahead in several specs, while the FX6 wins on several specs. Overall, the FX3 scores 63.1 and the FX6 scores 61.6 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (63.1 vs 61.6). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
The FX3 does not pull ahead on any single popular-comparison spec — its strengths sit in the spec-table groups rather than the headline advantages.
The FX6 similarly does not carry a headline advantage on the popular specs — look at the full table for category-specific deltas.
Both ship with comparable max video, optical zoom, sensor size, so those specs do not separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity says both are well-rounded; the differences are about trade-offs, not quality.
Which should you buy: Sony - FX3 or Sony - FX6?
Sony - FX3 leads the current Mars Score by 1.5 points.The more useful decision is the trade-off behind that result: compare the highlighted specifications against the way you will actually use the product.
Choose Sony - FX3 if…
Sony - FX3 does not lead a decisive measured field here, so choose it for price, ecosystem, design, or availability when those matter more to you.
Choose Sony - FX6 if…
Sony - FX6 does not lead a decisive measured field here, so choose it for price, ecosystem, design, or availability when those matter more to you.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why Sony - FX3 wins
- No decisive advantages.
Why Sony - FX6 wins
- No decisive advantages.
Spec comparison
Video
| Spec | Sony - FX3 | Sony - FX6 |
|---|---|---|
| Max video | 4K120 | 4K120 |
| Optical zoom | 0 | 0 |
| Sensor sizeⓘ | Full Frame | Full Frame |
Audio
| Spec | Sony - FX3 | Sony - FX6 |
|---|---|---|
| XLR input | true | true |
| Headphone jack | true | true |
Design
| Spec | Sony - FX3 | Sony - FX6 |
|---|---|---|
| Weight | 715 glead | 890 g |
| Articulating screen | true | true |