Sigma
fp
Minimalist full-frame box camera for creative stills and video.
$1,899
Launch priceReleased Jul 2019
Sony
FX3
Compact full-frame cinema line camera with S-Cinetone and pro video ergonomics.
$3,899
Launch priceReleased Feb 2021
FX3 is 1.6 years newer.
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Wins
fp
Wins
FX3
Which would you choose?
TL;DR — Key differences
- BFX3 has higher IBIS effectiveness (5.5 stops vs 0 stops)
- BFX3 has higher AF points / zones (627 vs 49)
- BFX3 has higher ISO max (native) (102,400 vs 25,600)
- BFX3 has higher Max video bit rate (600 Mbps vs 150 Mbps)
- Afp has higher Resolution (24.2 MP vs 12.1 MP)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to sharefp
138 × 98 × 88 mm
720 g (1.59 lb / 25.40 oz)
Credit card
85.6 × 54 mm
for scale
FX3
130 × 78 × 85 mm
715 g (1.58 lb / 25.22 oz)
fp is 8mm wider, 20mm taller, and 4mm thicker than FX3.
fp is 5 g heavier than FX3.
Depth (front-to-back): 88mm fp · 85mm FX3
Back view, to scale
Width × Height — same proportions as the front of the body.
fp
138 × 98 mm
Credit card
85.6 × 54 mm
FX3
130 × 78 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
fp
138 × 88 mm
Credit card
85.6 × 54 mm
FX3
130 × 85 mm
Sensor size, to scale
fp
36 × 24 mm · Full Frame
864 mm² area
FX3
35.6 × 23.8 mm · Full Frame
847 mm² area
Lens ecosystem
Native lens selection
fp: mount data unavailable
FX3
✓ more lensesSony E
350+
native lenses available
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
fp
Dimensions (W×H×D mm)
Adds 138, 98, 88
Resolution
24.2 MP vs 12.1 MP — higher is better
Subject recognition
Adds Bird, Vehicle
Battery life (CIPA)
640 shots vs 580 shots — higher is better
Burst (electronic)
11 fps vs 10 fps — higher is better
Reasons to choose
FX3
AF low-light limit
-6 EV vs -5 EV — lower is better
IBIS effectiveness
5.5 stops vs 0 stops — higher is better
Dimensions (W×H×D mm)
Adds 129.7, 77.8, 84.5
AF points / zones
627 vs 49 — higher is better
ISO max (native)
102,400 vs 25,600 — higher is better
Max video bit rate
600 Mbps vs 150 Mbps — higher is better
Codecs
Adds XAVC HS, XAVC S, XAVC S-I
Animal / bird AF
Only FX3 supports it
Both cameras share
- ✓AA filter — Both support aa filter
- ✓Eye AF — Both support eye af
- ✓Wi-Fi — Both support wi-fi
- ✓Bluetooth — Both support bluetooth
- ✓Microphone jack (3.5mm) — Both support microphone jack (3.5mm)
Pros & cons at a glance
Editorially curated highlights and trade-offs.
fp
Pros
- ✓Ultra compact
- ✓L-mount
- ✓Unique concept
Cons
- –No IBIS
- –24MP
- –Poor ergonomics for long shoots
FX3
Pros
- ✓Cinema form factor
- ✓S-Log3 / S-Cinetone
- ✓Compact for gimbals
- ✓Full-frame sensor
Cons
- –No EVF
- –Still photo ergonomics limited
- –Single card slot
Decided which one is right for you?
Compare live prices for the fp and FX3 at major authorized retailers.
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for video, fp or FX3?
FX3 scores 8.0/10 versus 4.5/10 for fp — 4K recording.
What's the resolution difference between the fp and FX3?
fp is 24.2 MP and FX3 is 12.1 MP, so the fp captures more detail for cropping and large prints.
Do the fp and FX3 have in-body image stabilization?
fp does not have IBIS, while FX3 has 5.5-stop in-body image stabilization.
Which shoots faster bursts — the fp or the FX3?
fp reaches 11 fps electronic. FX3 reaches 10 fps electronic.
What's the weight difference between the fp and FX3?
fp weighs 720 g and FX3 weighs 715 g, so the FX3 is 5 g lighter.
Do the fp and FX3 record 4K video?
fp: 4K up to 60p. FX3: 4K up to 120p.
Are the fp and FX3 weather sealed?
fp: No. FX3: Yes.
Which has better battery life?
Rated battery life is 640 shots (CIPA) for the fp and 580 shots for the FX3, giving the fp the edge.
How much does each cost?
fp launched at $1,899 and FX3 at $3,899. The fp is $2,000 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way fp vs FX3 vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed July 2026.
Product images courtesy of Sigma and Sony press materials.