Sony a7 III vs Sony a7R IV

102 facts in comparison

Based on 1,499 Reddit opinions. a7 III leads by 6 points.

1.5K opinions
a7 III leads by 6pts
Reddit's Pick
Sony a7 III
78%
B
Based on
3,509 Redditors
Winner

Sony a7 III

~$1,698
1,292 opinions

tldr; The camera that changed everything. 24.5MP full-frame, excellent AF, 10fps, 4K video. Still the benchmark for value full-frame.

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VS
Sony a7R IV
72%
B-
Based on
745 Redditors

Sony a7R IV

~$2,594.64
207 opinions

tldr; Same as Alpha 7R IV. 61MP resolution beast.

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AutofocusImage QualityVideoErgonomicsBattery Life
🎯AUT
🖼️IMA
🎬VID
ERG
🔋BAT
67
Points
71
Points

Score by Category

Autofocus
60%61%
Image Quality
81%73%
Video
44%44%
Ergonomics
53%47%
Battery Life
77%100%

Why is Sony a7R IV better than Sony a7 III?

  • Better value (100% vs 84%)
  • Better battery (100% vs 77%)
  • 61MP
  • Resolution king
  • Premium
Based on 4,254 Reddit opinions
Slight Edge

Reddit prefers the a7 III

Winning by 6 points (78% vs 72%)

Better image quality
Better ergonomics
Legendary value FF
High confidence (4,254 mentions)

💬Reddit Sentiment

Based on 4,254 Reddit mentions

Overall Rating

a7 III
7.8/10
3,509 mentions
a7R IV
7.2/10
745 mentions
VALUE
a7 III8.4/10
a7R IV10.0/10
VIDEO
a7 III4.4/10
a7R IV4.4/10
AUTOFOCUS
a7 III6.0/10
a7R IV6.1/10
IMAGE QUALITY
a7 III8.1/10
a7R IV7.3/10
BATTERY LIFE
a7 III7.7/10
a7R IV10.0/10
ERGONOMICS
a7 III5.3/10
a7R IV4.7/10
⚔️

Head to Head

Head to Head

a7 III: 2|a7R IV: 2
Valuea7R IV
a7 III84%
a7R IV100%
Video
a7 III44%
a7R IV44%
Autofocus
a7 III60%
a7R IV61%
Image Qualitya7 III
a7 III81%
a7R IV73%
Battery Lifea7R IV
a7 III77%
a7R IV100%
Ergonomicsa7 III
a7 III53%
a7R IV47%
a7 III78%
a7R IV72%
a7 III wins by 6 points

Key Specs

SpecSony a7 IIISony a7R IV
Video Resolution
4K30p (full-width)
Brand
Sony
Sony
Manufacturer
Sony
Sony
Color
Black
Black
Weight
1.4375 Pounds
1.274 Pounds

Key Highlights

Sony a7 IIIWinner
🏆 Legendary value FF
📸 24.5MP BSI sensor
🎯 693-point phase-detect AF
💰 Sweet spot used ($1000-1200)
Sony a7R IV
📸 61MP
🔍 Resolution king
💰 Premium
⚠️ Lens demanding

Topic Battles

a7 III: 2|Tied: 2|a7R IV: 1
🎯Autofocus
a7 III
60%
a7R IV
61%
🖼️Image Quality
a7 III wins
a7 III
81%
a7R IV
73%
🎬Video
a7 III
44%
a7R IV
44%
Ergonomics
a7 III wins
a7 III
53%
a7R IV
47%
🔋Battery Life
a7R IV wins
a7 III
77%
a7R IV
100%

Based on Reddit sentiment across 5 categories

📈Where They Rank

💬What Redditors Actually Say

What Redditors Say

Best praise vs top criticism for Sony a7 III

Best Praise
+72 pts
The A7III is indeed a good start into videography. 5k oversampled 4k, IBIS (in body image stabilization) and extremely good low light capabilities are a neat package. Sony offers a bunch of free LUTs that’ll help him tremendously when it comes to color grading (which represents the only shortfall of the A7III since it only records 8-bit footage). Add the dual SD-Card slots. When it comes to videography, “cheap” isn’t a word that’s usually associated with it. Everything costs tremendously. And if you compare prices (and capabilities) between a full frame camera like the A7III and other crop sensor cameras (Sony has some with IBIS, I think the A6500 is one?), the A7III comes almost always out on top. Used it can be had for $800-$900 for a fairly good condition one at almost all retailers that offer used gear. When it comes to lenses, full frame lenses are always more expensive than their APS-C counterparts. A good starting point would be something like a Tamron 28-75 f/2.8. New $699, used around $450. Overall, as a package, expensive, yes. But I strongly believe we need to foster our kids interests to give them the right start. And yes, that usually comes with a lot of hard earned dollars spend. The A7III was just on sale during black Friday for around $1,000 new which is an insane price for its capabilities, still so many years after release. I realize I’m playing the devil’s advocate here but running 2 A7III’s myself for my hybrid business and dabbling in film making, I strongly advocate for this camera. Are there better cameras out there? Sure, if you have a bunch of kidneys to sell. Comparable ones that are cheaper? Hardly. The A7III was the camera that changed the market and probably the first that was good at both, photography and videography, all in one weather resistant package with amazing battery runtime. Another benefit of the Sony E-Mount system is the virtually endless choice of lens options. Since others already mentioned the A6400, I ran that one as a gimbal camera. And I didn’t like it. Especially the noise it produced. And the batteries are fairly small, so I personally wouldn’t recommend it, even if it produces sharp 4k footage. But that’s just my take.
r/SonyAlpha
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Top Criticism
+12 pts
If he is into film not photography. a7iii isn’t the best deal out there. Sony ZV-10 is more of a video camera for beginner.
r/SonyAlpha
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3 more quotes available below

What Redditors Say

Best praise vs top criticism for Sony a7R IV

Best Praise
+26 pts
I use ISO1600 a lot with my A7RIV, def that ISO is very acceptable with these cameras
r/SonyAlpha
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Top Criticism
+26 pts
Not only they break down, but they are also cursed. Owners mysteriously die exactly one year after the camera breaks down, so stay away from them. This is my last day on earth as my a7r iv broke down exactly 364 days ago. They're already here, at my house. Let this be a warning. I regret the day I touched this damned camera.
r/SonyAlpha
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3 more quotes available below

📈Historical Price Data

Sony a7 III
Sony a7R IV
$1800$2400$3000Jun '25Jul '25Aug '25Oct '25Nov '25Dec '25Jan '26Feb '26Mar '26May '26Low: $1498Low: $2566.38Current: $2591.82
Sony a7 III
All-time low: $1298(2023-12)
Sony a7R IV
All-time low: $2294.95(2024-02)

Which is Better?

Sony a7 III Wins
78%
III
vs
72%
IV

Sony a7 III leads by 6 points based on 4,254 Reddit opinions.

Why a7 IIIWinner
  • 🏆 Legendary value FF
  • 📸 24.5MP BSI sensor
  • 🎯 693-point phase-detect AF
  • More discussed (3,509 vs 745)
Why a7R IV
  • Better Value for Money (100% vs 84%)

❤️The Love/Hate Breakdown

Sentiment Breakdown

29%Positive
Positive
29%
Neutral
63%
Negative
8%
Based on 3,509 Reddit opinions

Sentiment Breakdown

20%Positive
Positive
20%
Neutral
72%
Negative
8%
Based on 745 Reddit opinions

Frequently Asked Questions

Which is better, Sony a7 III or Sony a7R IV?
Based on 4,254 Reddit comments, Sony a7 III is the preferred choice with 78% positive sentiment vs Sony a7R IV's 72%. Sony a7 III leads by 6 percentage points.
Should I buy Sony a7 III or Sony a7R IV?
If you want the safer choice based on community sentiment, Sony a7 III has stronger approval ratings (78% vs 72%). However, Sony a7R IV may still be better depending on your specific needs, budget, or use case.
What do Redditors love about Sony a7 III?
Reddit users highlight: Legendary value FF. 24.5MP BSI sensor. 693-point phase-detect AF. With 3,509 mentions and 78% approval, it's a well-regarded choice in the community.
What do Redditors say about Sony a7R IV?
Reddit users highlight: 61MP. Resolution king. Premium. With 745 mentions and 72% approval, it remains a popular alternative.
How many Reddit reviews were analyzed?
This comparison analyzed 4,254 Reddit comments: 3,509 about Sony a7 III and 745 about Sony a7R IV. Data was sourced from Sony Cameras community discussions.
How accurate are these ratings?
Our sentiment analysis is approximately 80-85% accurate compared to manual review. Well-discussed products with many mentions tend to have more reliable scores than niche items with fewer data points.
Why trust Reddit over professional reviews?
Reddit users bought products with their own money and have no incentive to mislead. You're seeing hundreds of real opinions across different use cases, not just one reviewer's take. This crowdsourced approach surfaces both common praise and recurring complaints.

1,499 Reddit opinions analyzed · Last updated 5/30/2026