Sony a6400 vs Sony a7R IV
104 facts in comparison
Based on 865 Reddit opinions. Sony a6400Sony a6400 leads by 7 points.
865 opinions
Sony a6400 leads by 7pts
VS
Reddit's Pick
79%
B
Based on
2,268 Redditors
Winner
Sony a6400
~$1,198
658 opinions
tldr; The value APS-C. Great autofocus, reliable. Still recommended.
Check pricesVS
72%
B-
Based on
745 Redditors
Sony a7R IV
~$2,594.64
207 opinions
tldr; Same as Alpha 7R IV. 61MP resolution beast.
Check prices🎯AUT
🖼️IMA
🎬VID
✋ERG
🔋BAT
65
Points
71
Points
Score by Category
Autofocus
89%61%
Image Quality
63%73%
Video
51%44%
Ergonomics
62%47%
Battery Life
29%100%
Why is Sony a7R IV better than Sony a6400?
- Better image quality (73% vs 63%)
- Better battery (100% vs 29%)
- 61MP
- Resolution king
- Premium
Based on 3,013 Reddit opinions
Slight Edge
Reddit prefers the Sony a6400Sony a6400
Winning by 7 points (79% vs 72%)
Better ergonomics
Better autofocus
Better video
High confidence (3,013 mentions)
💬Reddit Sentiment
Based on 3,013 Reddit mentionsOverall Rating
Sony a6400
7.9/10
2,268 mentions
a7R IV
7.2/10
745 mentions
ERGONOMICS
Sony a64006.2/10
a7R IV4.7/10
IMAGE QUALITY
Sony a64006.3/10
a7R IV7.3/10
VALUE
Sony a64009.5/10
a7R IV10.0/10
AUTOFOCUS
Sony a64008.9/10
a7R IV6.1/10
BATTERY LIFE
Sony a64002.9/10
a7R IV10.0/10
VIDEO
Sony a64005.1/10
a7R IV4.4/10
⚔️
Head to Head
| Topic | Sony a6400 | a7R IV |
|---|---|---|
Ergonomics | 62% | 47% |
Image Quality | 63% | 73% |
Value | 95% | 100% |
Autofocus | 89% | 61% |
Battery Life | 29% | 100% |
Video | 51% | 44% |
Category Wins
Sony a6400: 3|a7R IV: 3
Head to Head
Sony a6400: 3|a7R IV: 3
ErgonomicsSony a6400
Sony a640062%
a7R IV47%
Image Qualitya7R IV
Sony a640063%
a7R IV73%
Valuea7R IV
Sony a640095%
a7R IV100%
AutofocusSony a6400
Sony a640089%
a7R IV61%
Battery Lifea7R IV
Sony a640029%
a7R IV100%
VideoSony a6400
Sony a640051%
a7R IV44%
Sony a6400
79%
72%
a7R IV
Sony a640079%
a7R IV72%
Sony a6400 wins by 7 points
Key Specs
| Spec | Sony a6400 | Sony a7R IV |
|---|---|---|
| Sensor | 24.2 MP APS-C Exmor CMOS | — |
| Autofocus | 425 phase-detection and 425 contrast-detection AF points | — |
| Continuous Shooting | 11 fps | — |
| Iso Range | 100-32000 (expandable to 102400) | 100-32000 (native), 50-102400 (expanded) |
| Video Resolution | 4K at 30fps | 4K30p (full-width) |
Key Highlights
Sony a6400Winner
💰 Great value
🎯 Excellent AF
🎬 Good video
👍 Still solid
Sony a7R IV
📸 61MP
🔍 Resolution king
💰 Premium
⚠️ Lens demanding
Topic Battles
Sony a6400: 3|Tied: 0|a7R IV: 2
🎯Autofocus
Sony a6400 winsSony a6400
89%
a7R IV
61%
🖼️Image Quality
a7R IV winsSony a6400
63%
a7R IV
73%
🎬Video
Sony a6400 winsSony a6400
51%
a7R IV
44%
✋Ergonomics
Sony a6400 winsSony a6400
62%
a7R IV
47%
🔋Battery Life
a7R IV winsSony a6400
29%
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 a6400
Best Praise
+82 pts“I recommend learning the exposure triangle, basic composition, and most importantly what many people dont mention is post editing. The 6400 is a very capable camera of taking stunning pictures. Also are you only using the kit lens? Id also graba 50mm 1.8 for portraits and to get some nice backround seperation.”
r/SonyAlpha
ViewTop Criticism
+24 pts“Pretty sure the A6400 has the same menu system and no IBIS, so it isn’t going to address the issues you’re having with the A6000.”
r/SonyAlpha
View3 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
ViewTop 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
View3 more quotes available below
Sentiment Over Time
Sony a6400
Sony a7R IV
📈Historical Price Data
Sony a6400
Sony a7R IV
Sony a6400
All-time low: $848(2025-04)
Sony a7R IV
All-time low: $2294.95(2024-02)
Which is Better?
Sony a6400 Wins
79%
a6400
vs
72%
IV
Sony a6400 leads by 7 points based on 3,013 Reddit opinions.
Why Sony a6400Winner
- 💰 Great value
- 🎯 Excellent AF
- 🎬 Good video
- More discussed (2,268 vs 745)
Why a7R IV
- 📸 61MP
- 🔍 Resolution king
❤️The Love/Hate Breakdown
Sentiment Breakdown
23%Positive
Positive
23%Neutral
71%Negative
6%Based on 2,268 Reddit opinions
Sentiment Breakdown
20%Positive
Positive
20%Neutral
72%Negative
8%Based on 745 Reddit opinions
Frequently Asked Questions
Which is better, Sony a6400 or Sony a7R IV?
Based on 3,013 Reddit comments, Sony a6400 is the preferred choice with 79% positive sentiment vs Sony a7R IV's 72%. Sony a6400 leads by 7 percentage points.
Should I buy Sony a6400 or Sony a7R IV?
If you want the safer choice based on community sentiment, Sony a6400 has stronger approval ratings (79% 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 a6400?
Reddit users highlight: Great value. Excellent AF. Good video. With 2,268 mentions and 79% 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 3,013 Reddit comments: 2,268 about Sony a6400 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.
865 Reddit opinions analyzed · Last updated 5/26/2026