Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Canon - EOS R5 C | Sony - FX6 |
|---|---|---|
| Max video | 8K | 4K120 |
Between the EOS R5 C and FX6, the EOS R5 C comes out ahead in max video, while the FX6 wins on several specs. Overall, the EOS R5 C scores 71 and the FX6 scores 61.6 on our Mars Score.
Which should you buy?
The EOS R5 C is the clear pick on raw spec strength, leading by 9.4 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
Pick the EOS R5 C if you care most about max video. The biggest gaps in its favor are max video. The single most decisive one: Max video: 8K (vs 4K120).
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 optical zoom, sensor size, xlr input, so those specs do not separate the two — focus on the differences below.
Bottom line: the EOS R5 C is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Which should you buy: Canon - EOS R5 C or Sony - FX6?
Canon - EOS R5 C leads the current Mars Score by 9.4 points.The more useful decision is the trade-off behind that result: compare max video against the way you will actually use the product.
Choose Canon - EOS R5 C if…
Canon - EOS R5 C has the measurable edge on max video.
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 Canon - EOS R5 C wins
- ▲Max video: 8K (vs 4K120).
Why Sony - FX6 wins
- No decisive advantages.
Spec comparison
Video
| Spec | Canon - EOS R5 C | Sony - FX6 |
|---|---|---|
| Max video | 8Klead | 4K120 |
| Optical zoom | 0 | 0 |
| Sensor sizeⓘ | Full Frame | Full Frame |
Audio
| Spec | Canon - EOS R5 C | Sony - FX6 |
|---|---|---|
| XLR input | true | true |
| Headphone jack | true | true |
Design
| Spec | Canon - EOS R5 C | Sony - FX6 |
|---|---|---|
| Weight | 770 glead | 890 g |
| Articulating screen | true | true |