Sony
FX5
2026 Cinema Line full-frame camera with 16.6MP stacked Exmor RS, 5K Open Gate, internal 16-bit X-OCN RAW, triple base ISO, and FX3-class compact mobility.
$4,899
Launch priceReleased Aug 2026
Sony
RX10 IV
1-inch bridge with 24–600mm f/2.4–4 zoom, 24fps AF tracking, and pro video features.
$1,699
Launch priceReleased Sep 2017
FX5 is 8.9 years newer.
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Wins
FX5
Wins
RX10 IV
3 categories tied
Which would you choose?
TL;DR — Key differences
- BRX10 IV has higher Burst (mechanical) (24 fps vs 0 fps)
- BRX10 IV has higher Burst (electronic) (15 fps vs 0 fps)
- BRX10 IV has lower ISO min (native) (100 vs 800)
- BRX10 IV has higher 1080p max frame rate (1000 fps vs 240 fps)
- AFX5 has higher 4K max frame rate (120 fps vs 29.97 fps)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to share
FX5
132 × 79 × 87 mm
734 g (1.62 lb / 25.89 oz)
Credit card
85.6 × 54 mm
for scale
RX10 IV
133 × 94 × 145 mm
1095 g (2.41 lb / 38.63 oz)
FX5 is 15mm shorter and 58mm thinner than RX10 IV.
FX5 is 361 g lighter than RX10 IV.
Depth (front-to-back): 87mm FX5 · 145mm RX10 IV
Back view, to scale
Width × Height — same proportions as the front of the body.
FX5
132 × 79 mm
Credit card
85.6 × 54 mm
RX10 IV
133 × 94 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
FX5
132 × 87 mm
Credit card
85.6 × 54 mm
RX10 IV
133 × 145 mm
Sensor size, to scale
FX5
35.7 × 23.8 mm · Full Frame
850 mm² area
RX10 IV
13.2 × 8.8 mm · 1-inch
116 mm² area
7.3× larger sensor area = shallower depth of field and better low-light performance.
Lens ecosystem
Native lens selection
FX5
✓ more lensesSony E
350+
native lenses available
RX10 IV: mount data unavailable
Counts include current first-party and major third-party native autofocus lenses.
Use-case scoring
Which one for what?
Algorithmic scores from verified specs · 10 = best in class
Why pick one over the other
Reasons to choose
FX5
AF low-light limit
-6 EV vs -4 EV — lower is better
Dimensions (W×H×D mm)
Adds 132.3, 79, 86.95
Card types
Adds CFexpress Type A, SD UHS-II
Codecs
Adds X-OCN LT, X-OCN C1, X-OCN C2…
4K max frame rate
120 fps vs 29.97 fps — higher is better
EVF resolution
7,070,000 vs 2,359,296 — higher is better
Battery capacity
2670 mAh vs 1020 mAh — higher is better
Internal RAW video
Only FX5 supports it
Reasons to choose
RX10 IV
Burst (mechanical)
24 fps vs 0 fps — higher is better
Burst (electronic)
15 fps vs 0 fps — higher is better
Dimensions (W×H×D mm)
Adds 132.5, 94, 145
Card types
Adds SD, SDHC, SDXC…
ISO min (native)
100 vs 800 — lower is better
1080p max frame rate
1000 fps vs 240 fps — higher is better
Codecs
Adds AVCHD, MP4
RAW buffer depth
249 frames vs 120 frames — higher is better
Both cameras share
- ✓AA filter — Both support aa filter
- ✓ISO max (native) — Both 12,800
- ✓AF points / zones — Both 759
- ✓AF frame coverage — Both 94 %
- ✓Eye AF — Both support eye af
- ✓Animal / bird AF — Both support animal / bird af
Pros & cons at a glance
Editorially curated highlights and trade-offs.
FX5
Pros
- ✓5K Open Gate + internal X-OCN RAW (LT / C1 / C2)
- ✓Triple base ISO 800 / 4000 / 12800 + Dual Gain
- ✓15+ stops DR (S-Log3) + BIONZ XR2 AI AF
- ✓5K 60p / 4K 120p / FHD 240p at launch
- ✓Compact body with IBIS, cooling, dual card slots
Cons
- –Body-only $4,899 — XLR handle / OLED EVF optional
- –Open Gate X-OCN only at launch (XAVC Open Gate via FW)
- –4K 240p / 5K 120p planned for 2027 firmware
- –No built-in EVF (optional DVF-EL1)
RX10 IV
Pros
- ✓24–600mm reach
- ✓24fps with AF
- ✓Weather sealed
- ✓Strong all-in-one travel camera
Cons
- –1-inch sensor
- –Large bridge body
- –Expensive for sensor size
Decided which one is right for you?
Compare live prices for the FX5 and RX10 IV at major authorized retailers.
Sony RX10 IV
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for video, FX5 or RX10 IV?
FX5 scores 8.0/10 versus 3.0/10 for RX10 IV — 4K recording.
What's the resolution difference between the FX5 and RX10 IV?
FX5 is 16.6 MP and RX10 IV is 20.1 MP, so the RX10 IV captures more detail for cropping and large prints.
Do the FX5 and RX10 IV have in-body image stabilization?
FX5 has 5.5-stop in-body image stabilization, while RX10 IV has 6-stop in-body image stabilization.
What's the weight difference between the FX5 and RX10 IV?
FX5 weighs 734 g and RX10 IV weighs 1095 g, so the FX5 is 361 g lighter.
Do the FX5 and RX10 IV record 4K video?
FX5: 4K up to 120p. RX10 IV: 4K up to 29.97p.
Are the FX5 and RX10 IV weather sealed?
FX5: Yes. RX10 IV: Yes.
How much does each cost?
FX5 launched at $4,899 and RX10 IV at $1,699. The RX10 IV is $3,200 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way FX5 vs RX10 IV vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed July 2026.
Product images courtesy of Sony press materials.