Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Canon - VIXIA HF G70 | Sony - FX3 |
|---|---|---|
| XLR input | false | true |
| Max video | 4K30 | 4K120 |
| Sensor size | 1" | Full Frame |
| Optical zoom | 15 | 0 |
Between the VIXIA HF G70 and FX3, the VIXIA HF G70 comes out ahead in optical zoom, while the FX3 wins on xlr input / max video. Overall, the VIXIA HF G70 scores 66 and the FX3 scores 63.1 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (66 vs 63.1). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the VIXIA HF G70 if you care most about optical zoom. The biggest gaps in its favor are optical zoom. The single most decisive one: Optical zoom: 15 vs 0.
Pick the FX3 if you care most about xlr input / max video. Its strongest claims are xlr input, max video, sensor size. The single most decisive one: Has XLR input.
There are no meaningful ties on the headline specs — every popular-comparison metric has a winner.
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: Canon - VIXIA HF G70 or Sony - FX3?
Canon - VIXIA HF G70 leads the current Mars Score by 2.9 points.The more useful decision is the trade-off behind that result: compare max video, optical zoom, sensor size against the way you will actually use the product.
Choose Canon - VIXIA HF G70 if…
Canon - VIXIA HF G70 has the measurable edge on optical zoom.
Choose Sony - FX3 if…
Sony - FX3 has the measurable edge on has xlr input, max video, sensor size.
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 Canon - VIXIA HF G70 wins
- ▲Optical zoom: 15 vs 0.
Why Sony - FX3 wins
- ▲Has XLR input.
- ▲Max video: 4K120 (vs 4K30).
- ▲Sensor size: Full Frame (vs 1").
Spec comparison
Video
| Spec | Canon - VIXIA HF G70 | Sony - FX3 |
|---|---|---|
| Max video | 4K30 | 4K120lead |
| Optical zoom | 15lead | 0 |
| Sensor sizeⓘ | 1" | Full Framelead |
Audio
| Spec | Canon - VIXIA HF G70 | Sony - FX3 |
|---|---|---|
| XLR input | false | truelead |
| Headphone jack | true | true |
Design
| Spec | Canon - VIXIA HF G70 | Sony - FX3 |
|---|---|---|
| Weight | 725 g | 715 glead |
| Articulating screen | true | true |