Sigma
FP2
Pocket-sized L-Mount full-frame body with a 24.5MP partially stacked sensor, 20fps stills, 6K OpenGate / ProRes RAW video, 70GB internal storage, and a Still/Cine mode switch.
$2,199
Launch priceReleased Nov 2026
Sony
Alpha 7 IV
33MP hybrid all-rounder with 10-bit 4K 60p and AI-powered subject tracking.
$2,499
Launch priceReleased Oct 2021
FP2 is 5.1 years newer.
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Wins
FP2
Wins
Alpha 7 IV
1 categories tied
Which would you choose?
TL;DR — Key differences
- BAlpha 7 IV has higher Burst (mechanical) (10 fps vs 0 fps)
- BAlpha 7 IV has higher IBIS effectiveness (5.5 stops vs 0 stops)
- BAlpha 7 IV has higher RAW buffer depth (828 frames vs 180 frames)
- AFP2 has higher ISO max (native) (102,400 vs 51,200)
- AFP2 has higher Burst (electronic) (20 fps vs 10 fps)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to share
FP2
112 × 71 × 41 mm
460 g (1.01 lb / 16.23 oz)
Credit card
85.6 × 54 mm
for scale
Alpha 7 IV
131 × 96 × 80 mm
658 g (1.45 lb / 23.21 oz)
FP2 is 19mm narrower, 25mm shorter, and 39mm thinner than Alpha 7 IV.
FP2 is 198 g lighter than Alpha 7 IV.
Depth (front-to-back): 41mm FP2 · 80mm Alpha 7 IV
Back view, to scale
Width × Height — same proportions as the front of the body.
FP2
112 × 71 mm
Credit card
85.6 × 54 mm
Alpha 7 IV
131 × 96 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
FP2
112 × 41 mm
Credit card
85.6 × 54 mm
Alpha 7 IV
131 × 80 mm
Sensor size, to scale
FP2
35.9 × 23.9 mm · Full Frame
858 mm² area
Alpha 7 IV
35.9 × 23.9 mm · Full Frame
858 mm² area
Lens ecosystem
Native lens selection
FP2: mount data unavailable
Alpha 7 IV
✓ 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
FP2
AF low-light limit
-5 EV vs -4 EV — lower is better
Subject recognition
Adds Animals, Birds, People
Dimensions (W×H×D mm)
Adds 112, 71, 41
Card types
Adds SD, SDHC, SDXC
ISO max (native)
102,400 vs 51,200 — higher is better
Burst (electronic)
20 fps vs 10 fps — higher is better
Codecs
Adds ProRes RAW, ProRes RAW HQ
Weight
460 g vs 658 g — lower is better
Reasons to choose
Alpha 7 IV
Subject recognition
Adds Human, Animal, Bird…
Burst (mechanical)
10 fps vs 0 fps — higher is better
IBIS effectiveness
5.5 stops vs 0 stops — higher is better
Dimensions (W×H×D mm)
Adds 131.3, 96.4, 79.8
Card types
Adds CFexpress Type A, SD UHS-II
RAW buffer depth
828 frames vs 180 frames — higher is better
Codecs
Adds XAVC HS, XAVC S, XAVC S-I
AA filter
Only Alpha 7 IV supports it
Both cameras share
- ✓ISO min (native) — Both 100
- ✓Eye AF — Both support eye af
- ✓Animal / bird AF — Both support animal / bird af
- ✓Internal RAW video — Both support internal raw video
- ✓Weather sealing — Both support weather sealing
- ✓Touchscreen — Both support touchscreen
Pros & cons at a glance
Editorially curated highlights and trade-offs.
FP2
Pros
- ✓World's smallest full-frame body (376g body only)
- ✓24.5MP partially stacked sensor, 20fps electronic burst
- ✓6K OpenGate + ProRes RAW HQ, L-Log, 32-bit float audio
- ✓70GB internal storage + SD UHS-II + USB SSD
- ✓Tilting 3.15" LCD, dust/splash resistant, modular EVF-21
Cons
- –No in-body image stabilization (EIS in video only)
- –No built-in EVF — optional EVF-21 sold separately
- –Electronic shutter only
- –No headphone jack (USB audio only)
Alpha 7 IV
Pros
- ✓33MP — more detail for cropping and print
- ✓10-bit 4K 60p (Super35 crop) / 4K 30p full-frame
- ✓Full-size HDMI port
- ✓759 phase-detect AF points
Cons
- –4K 60p requires Super35 crop
- –10fps burst lags behind R6 II at 40fps
- –Complex menu system
Decided which one is right for you?
Compare live prices for the FP2 and Alpha 7 IV at major authorized retailers.
Sony Alpha 7 IV
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for video, FP2 or Alpha 7 IV?
Alpha 7 IV scores 7.5/10 versus 3.5/10 for FP2 — 4K recording.
What's the resolution difference between the FP2 and Alpha 7 IV?
FP2 is 24.5 MP and Alpha 7 IV is 33 MP, so the Alpha 7 IV captures more detail for cropping and large prints.
Do the FP2 and Alpha 7 IV have in-body image stabilization?
FP2 does not have IBIS, while Alpha 7 IV has 5.5-stop in-body image stabilization.
Which shoots faster bursts — the FP2 or the Alpha 7 IV?
FP2 reaches 20 fps electronic. Alpha 7 IV reaches 10 fps electronic.
What's the weight difference between the FP2 and Alpha 7 IV?
FP2 weighs 460 g and Alpha 7 IV weighs 658 g, so the FP2 is 198 g lighter.
Do the FP2 and Alpha 7 IV record 4K video?
FP2: 4K up to 59.94p. Alpha 7 IV: 4K up to 60p.
Are the FP2 and Alpha 7 IV weather sealed?
FP2: Yes. Alpha 7 IV: Yes.
Which has better battery life?
Rated battery life is 370 shots (CIPA) for the FP2 and 580 shots for the Alpha 7 IV, giving the Alpha 7 IV the edge.
How much does each cost?
FP2 launched at $2,199 and Alpha 7 IV at $2,499. The FP2 is $300 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way FP2 vs Alpha 7 IV vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed October 2026.
Product images courtesy of Sigma and Sony press materials.