The catch
Canon EOS R7 body
Body only, 612g before any lens. Duplicate recording depends on the mode and can stop once either card is full.
Side by side
Canon EOS R7 vs Sony a6700: R7 records a second card copy, Sony brings 4K120 in a lighter body
Quick verdict
The R7 writes a second card copy in supported modes, and the Sony brings 4K120 in a lighter body. If immediate card duplication or Canon crop lenses you already have are at the heart of the purchase, take the R7. If the lighter body, 119g less, or the 4K120 handles the job you do more often, take the a6700, especially with E lenses already in your bag. Both links are body-only. The R7’s two slots depend on the right mode and free space, and the a6700’s high-speed video comes with added crop and media requirements.
Before you buy
Why, and what it costs you
A second card changes the plan for an event that cannot happen again
When you are the only person recording a family ceremony, the R7 can make two card copies in supported modes, and the a6700 has one slot. What the R7 gives you is immediate duplication, as long as both cards have space and the selected mode allows it. That is different from automatically switching to a second card when the first one fills. Canon also warns that movie auto-switch ends the take at a full card and recording has to be restarted. For uninterrupted coverage, planning capacity is still essential. Go with the R7 when the second copy is a hard requirement, and verify the exact recording mode instead of assuming any two-card setup provides it.
Where this comes from
Canon duplication compared with overflow behavior and movie interruption, and Sony’s single slot. It separates redundancy from uninterrupted duration. It does not claim that special RAW-burst modes support duplication.
The catch
Sony a6700 body
Body only, with a single SD slot. 4K120 narrows the view, and internal proxy recording is not available.
Canon EOS R7 body
- Why pick it
- At an important event you need supported duplicate recording, or you want to keep your compatible RF-S or adapted EF-S lenses in use.
- The 612g body, before any lens, is acceptable to you, and you would sooner keep your Canon setup than rebuild around another mount.
- The catch
- Body only, 612g before any lens. Duplicate recording depends on the mode and can stop once either card is full.
Sony a6700 body
- Why pick it
- Your whole carry setup gains from a lighter body, or 4K120 is something you need again and again and you accept its crop and card limits.
- Compatible E lenses are already yours, and you can handle recording to a single card and backing up afterward.
- The catch
- Body only, with a single SD slot. 4K120 narrows the view, and internal proxy recording is not available.
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What this page compares
R7 vs a6700 for family sport, long outings and one-off events. Weigh duplicate recording, the full weight with a lens and the 4K slow-motion workflow.
These higher-end APS-C bodies both have stabilization and monitored audio, and both target people who want one interchangeable-lens camera for stills and video. The trade that matters is capture redundancy and Canon lens continuity on one side, against Sony’s lighter body and 4K120 on the other.
Which one fits
Pick the situations that sound like you
Essential: a second card copy while a supported event mode is running
Only R7 offers two card slots.
- Canon EOS R7 body
- Better fit
- Sony a6700 body
- Not suitable
Hold on to compatible Canon crop lenses
With the right adapter wherever one is required, the R7 stays with that lens system.
- Canon EOS R7 body
- Better fit
- Sony a6700 body
- Caution
Want 120p recording that still holds 4K
Sony handles 4K120, but with extra crop and media requirements.
- Canon EOS R7 body
- Not suitable
- Sony a6700 body
- Better fit
Keep body weight down before picking the lens
On the same battery/card basis, the a6700 weighs 119g less.
- Canon EOS R7 body
- Caution
- Sony a6700 body
- Better fit
In practice
Differences you will notice
A second card changes the plan for an event that cannot happen again
When you are the only person recording a family ceremony, the R7 can make two card copies in supported modes, and the a6700 has one slot. What the R7 gives you is immediate duplication, as long as both cards have space and the selected mode allows it. That is different from automatically switching to a second card when the first one fills. Canon also warns that movie auto-switch ends the take at a full card and recording has to be restarted. For uninterrupted coverage, planning capacity is still essential. Go with the R7 when the second copy is a hard requirement, and verify the exact recording mode instead of assuming any two-card setup provides it.
How we worked this out
Canon duplication compared with overflow behavior and movie interruption, and Sony’s single slot. It separates redundancy from uninterrupted duration. It does not claim that special RAW-burst modes support duplication.
A lighter body helps only when the whole lens setup stays lighter too
With battery and card included, the a6700 is 119g lighter. That matters on a long zoo visit or a day spent carrying the camera along with the children’s supplies, but it is not a weight comparison of the complete systems. If you already own a useful Canon lens, you may be able to keep the R7 setup simple, whereas replacing it with a different Sony lens can shift the total. Both links are body-only, so before deciding, compare the lens range and the actual accessories for the same outing. A wrist or handling limitation also calls for trying the grip in person. The weight difference alone does not establish comfort or suitability for a disability.
How we worked this out
612−493=119g, based on manufacturer body-plus-battery/card figures. Lens and accessories are left out on both sides. No unverified complete-kit or medical comfort claim is made.
A high-speed clip may call for a wider lens and an additional editing step
On a close sideline or in a small indoor sports area, the a6700’s 4K120 crop can make it harder to hold the whole movement in frame from a fixed position. You may need a suitable wider lens even if the ordinary-speed view looked fine. Sony also turns off internal 120p proxies, so a computer that depends on them may have to generate its own copies after transfer. The R7’s 4K60 slows things down less at a common playback rate, but that can be enough for the clip you plan to share. Pick Sony when the extra slow motion is worth those costs. Neither camera’s top frame rate proves better autofocus or distortion-free motion.
How we worked this out
Sony’s documented narrower 120p view and missing internal proxies, and Canon’s 4K60 inventory. A fixed shooting position and proxy-dependent editing are stated assumptions. No measured sports accuracy claim is made.
Option A
Canon, 5137C002
Canon EOS R7 body
At an important event you need supported duplicate recording, or you want to keep your compatible RF-S or adapted EF-S lenses in use.
- Best for
- At an important event you need supported duplicate recording, or you want to keep your compatible RF-S or adapted EF-S lenses in use.
Facts we checked
- Copies during capture: Two SD slots, eligible duplication
- 4K action recording: Up to 59.94p
- Body with battery and card: 612g
- Existing lens path: RF/RF-S, qualified EF/EF-S via adapter
Option B
Sony, ILCE6700/B
Sony a6700 body
Your whole carry setup gains from a lighter body, or 4K120 is something you need again and again and you accept its crop and card limits.
- Best for
- Your whole carry setup gains from a lighter body, or 4K120 is something you need again and again and you accept its crop and card limits.
Facts we checked
- Copies during capture: One SD slot
- 4K action recording: Up to 119.88p with crop
- Body with battery and card: 493g
- Existing lens path: Sony E
Spec by spec
Where they really differ
| Spec | Canon EOS R7 body | Sony a6700 body | In practice |
|---|---|---|---|
| Copies during capture | Two SD slots, eligible duplication | One SD slot | The R7 has an immediate copy route that the Sony body lacks. |
| 4K action recording | Up to 59.94p | Up to 119.88p with crop | Sony slows things down further and keeps 4K. |
| Body with battery and card | 612g | 493g | Sony weighs 119g less, before lens and accessories. |
| Existing lens path | RF/RF-S, qualified EF/EF-S via adapter | Sony E | Keeping a useful lens can count for more than the difference between bodies. |
| Handheld and audio support | Body stabilization, mic and headphones | Body stabilization, mic and headphones | Capabilities both share are not enough to settle this pairing. |
Trade-offs
What each pick costs you
With Canon EOS R7 body
- You get two copies from two cards only if the mode you chose supports duplication and the camera is set up correctly.
With Sony a6700 body
- The 119g saved on the body can vanish when the lens or support gear for the same job weighs more.
Change of plan
When the answer changes
Duplicated capture or the Canon lens collection decides it
Go with Canon EOS R7 body. The R7 covers that recording or ownership need.
What fixes the actual outing is 4K120 or the lighter Sony body
Go with Sony a6700 body. Once the whole lens and editing plan is checked, the a6700 earns the pick.
Decision guide
Before you buy
You want to catch the decisive moment, carry the camera all day and get home with a recording you can use.
What this page can’t tell you
- Autofocus, rolling shutter and image noise have not been measured or ranked.
- After an important event, both cameras need their files backed up off the camera.
By the numbers
What the data shows
What we found across the mirrorless cameras we compare, plus the checked facts behind each finding.
Show the facts and the math
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Canon EOS R7 body |
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| Sony a6700 body |
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Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
Canon EOS R7 body
At an important event you need supported duplicate recording, or you want to keep your compatible RF-S or adapted EF-S lenses in use.
The 612g body, before any lens, is acceptable to you, and you would sooner keep your Canon setup than rebuild around another mount.
See price & reviews on AmazonSony a6700 body
Your whole carry setup gains from a lighter body, or 4K120 is something you need again and again and you accept its crop and card limits.
Compatible E lenses are already yours, and you can handle recording to a single card and backing up afterward.
See price & reviews on AmazonEach link opens in a new tab.
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