The catch
Sony a6700 body
4K120 brings a crop and turns off internal 120p proxies. It has one card slot.
Side by side
Sony a6700 vs A7C II: a6700 retains crop glass and 4K120, while A7C II calls for full-frame lenses
Quick verdict
The a6700 holds on to crop glass and 4K120, and the A7C II needs full-frame lenses to use its full image area. Take the a6700 if compatible APS-C lenses stay central to your kit or 4K120 is a true output requirement. Take the A7C II if suitable full-frame lenses give you the wider view you want for stills and ordinary-speed video. The A7C II crops 4K60, and APS-C stills you keep fall to about 14.2MP. Neither offer includes a lens.
Before you buy
Why, and what it costs you
Moving up can leave your kept lenses producing smaller files
Mounting an APS-C E lens on A7C II instead of a6700 does not make it a full-frame lens. A7C II’s large APS-C file is 4608×3072, about 14.2MP, while a6700’s native sensor gives 26MP. Suppose the same compact zoom follows a child across a field and the shot needs cropping. The full-frame body can then leave fewer pixels to crop from. A7C II is a more convincing upgrade when a suitable full-frame lens comes with the purchase. For keeping a useful crop-lens collection working as intended, a6700 is the more direct route.
Where this comes from
4608×3072=14,155,776 against 26MP native APS-C. A sensor count is no measured comparison of detail, and exact lens compatibility still applies.
The catch
Sony Alpha 7C II body
Coverage at 4K60 is limited to Super 35. With APS-C lenses, stills come to about 14.2MP instead of the full 33MP.
Sony a6700 body
- Why pick it
- Your compatible APS-C lenses should keep roughly 26MP coverage and not drop to a 14.2MP crop on a full-frame body.
- Internal 4K120 is what you want, and its extra crop, media requirements and missing internal 120p proxies are acceptable.
- The catch
- 4K120 brings a crop and turns off internal 120p proxies. It has one card slot.
Sony Alpha 7C II body
- Why pick it
- You need a suitable full-frame lens to show more of a small room, in stills or in ordinary-speed video.
- A 514g body with 33MP full-frame stills appeals to you, and you can budget for the right lenses.
- The catch
- Coverage at 4K60 is limited to Super 35. With APS-C lenses, stills come to about 14.2MP instead of the full 33MP.
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What this page compares
Sony a6700 vs A7C II for E lenses you already own, children’s sport and indoor groups. Weigh crop-file size, the slow-motion workflow and the real lens upgrade.
Plausible upgrades from an older small E-mount body include the upper APS-C Sony and the compact full-frame Sony. The sensor-size preference can flip depending on existing lenses and the type of family video.
Which one fits
Pick the situations that sound like you
Hold onto APS-C lenses and keep generous room to crop stills
a6700 retains the intended 26MP system.
- Sony a6700 body
- Better fit
- Sony Alpha 7C II body
- Caution
Record internal 4K120
At 4K60, A7C II stops.
- Sony a6700 body
- Better fit
- Sony Alpha 7C II body
- Not suitable
For indoor stills, use full-frame lens width
A7C II can use the larger image area.
- Sony a6700 body
- Caution
- Sony Alpha 7C II body
- Better fit
Monitor microphone sound as you record
Each has its own mic socket and headphone socket.
- Sony a6700 body
- Good
- Sony Alpha 7C II body
- Good
In practice
Differences you will notice
Moving up can leave your kept lenses producing smaller files
Mounting an APS-C E lens on A7C II instead of a6700 does not make it a full-frame lens. A7C II’s large APS-C file is 4608×3072, about 14.2MP, while a6700’s native sensor gives 26MP. Suppose the same compact zoom follows a child across a field and the shot needs cropping. The full-frame body can then leave fewer pixels to crop from. A7C II is a more convincing upgrade when a suitable full-frame lens comes with the purchase. For keeping a useful crop-lens collection working as intended, a6700 is the more direct route.
How we worked this out
4608×3072=14,155,776 against 26MP native APS-C. A sensor count is no measured comparison of detail, and exact lens compatibility still applies.
Along with a frame rate, a sports clip brings an editing cost
a6700 can record 4K120, but A7C II tops out at 4K60. That counts when a finished family sports clip needs slower playback and has to stay in 4K. The a6700 mode adds a crop, calls for media suited to the codec, and cannot create internal proxies at 120p. If your laptop struggles with the original files, you may need to generate proxies after the game. A7C II cannot match that 4K capture rate, yet its ordinary-speed workflow may already deliver the output you need. Pick a6700 for a specific slow-motion need, and factor in the lens, card and editing time.
How we worked this out
Built on official high-speed inventories and a6700’s proxy and media restrictions. The laptop workflow is conditional. No universal playback-speed or heat prediction is offered.
A 21g difference between bodies conceals the lens decision
Only 21g separates the stated body weights. If you already own a full-frame lens, A7C II can give a wider stills view in a crowded room without much extra body weight. If all your lenses are APS-C, buying it also means a new coverage decision and possibly a larger lens. Both cameras crop the view at their relevant high-speed settings, too, so a full-frame body does not promise the same room view at every frame rate. Look at the lens you would mount for the family job before you decide which camera is easier to bring along.
How we worked this out
21g is 514-493. This is sensor-area geometry with appropriate lenses, and it assumes no lens weight, cost or universal field-of-view result.
Option A
Sony, ILCE6700/B
Sony a6700 body
Your compatible APS-C lenses should keep roughly 26MP coverage and not drop to a 14.2MP crop on a full-frame body.
- Best for
- Your compatible APS-C lenses should keep roughly 26MP coverage and not drop to a 14.2MP crop on a full-frame body.
Facts we checked
- Retained APS-C lens: Native 26MP sensor coverage
- Full-frame lens for indoor stills: APS-C framing
- Internal 4K high speed: Up to 119.88p with extra crop
- Body with battery/card: 493g
Option B
Sony, ILCE7CM2/B
Sony Alpha 7C II body
You need a suitable full-frame lens to show more of a small room, in stills or in ordinary-speed video.
- Best for
- You need a suitable full-frame lens to show more of a small room, in stills or in ordinary-speed video.
Facts we checked
- Retained APS-C lens: 4608×3072 crop, about 14.2MP
- Full-frame lens for indoor stills: Full-frame image area
- Internal 4K high speed: Up to 59.94p in Super 35
- Body with battery/card: 514g
Spec by spec
Where they really differ
| Spec | Sony a6700 body | Sony Alpha 7C II body | In practice |
|---|---|---|---|
| Retained APS-C lens | Native 26MP sensor coverage | 4608×3072 crop, about 14.2MP | With a crop lens, the larger sensor can end up giving a smaller usable file. |
| Full-frame lens for indoor stills | APS-C framing | Full-frame image area | A7C II can keep the lens’s wider view intact. |
| Internal 4K high speed | Up to 119.88p with extra crop | Up to 59.94p in Super 35 | a6700 is the one that supports slower 4K playback. |
| Body with battery/card | 493g | 514g | Bodies differ by only 21g, lenses aside. |
| Audio and copies | Mic/headphone, one SD | Mic/headphone, one SD | Neither camera writes a second copy to a card while capturing. |
Trade-offs
What each pick costs you
With Sony a6700 body
- Match the card to the specific codec and recording mode. You may still need a wider lens or proxies made on a computer.
With Sony Alpha 7C II body
- A full-frame lens can move kit cost and size much more than the 21g body difference does. The lens is separate.
Change of plan
When the answer changes
Your regular work is crop lenses and 4K slow motion
Go with Sony a6700 body. a6700 preserves those capabilities.
Full-frame lenses solve indoor stills framing
Go with Sony Alpha 7C II body. A7C II uses their wider coverage.
Decision guide
Before you buy
You want the larger sensor, but not at the expense of the compact lenses and slow-motion clips that make your current camera useful.
What this page can’t tell you
- Autofocus and low light have not been ranked.
- A moving subject is not stopped by stabilization.
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 |
|---|---|---|---|
| Sony a6700 body |
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| Sony Alpha 7C II 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.
Sony a6700 body
Your compatible APS-C lenses should keep roughly 26MP coverage and not drop to a 14.2MP crop on a full-frame body.
Internal 4K120 is what you want, and its extra crop, media requirements and missing internal 120p proxies are acceptable.
See price & reviews on AmazonSony Alpha 7C II body
You need a suitable full-frame lens to show more of a small room, in stills or in ordinary-speed video.
A 514g body with 33MP full-frame stills appeals to you, and you can budget for the right lenses.
See price & reviews on AmazonEach link opens in a new tab.
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