Fujifilm
X-T20
Small X-T body with 24MP X-Trans III, 4K recording, and classic Fujifilm controls.
$899
Released Jan 2017
Sony
Alpha 7 IV
33MP hybrid all-rounder with 10-bit 4K 60p and AI-powered subject tracking.
$2,499
Released Oct 2021
Alpha 7 IV is 4.8 years newer.
Wins
X-T20
Wins
Alpha 7 IV
1 categories tied
TL;DR — Key differences
- BAlpha 7 IV has higher IBIS effectiveness (5.5 stops vs 0 stops)
- BAlpha 7 IV has higher RAW buffer depth (828 frames vs 23 frames)
- BAlpha 7 IV has higher Max video bit rate (600 Mbps vs 100 Mbps)
- BAlpha 7 IV has higher ISO max (native) (51,200 vs 12,800)
- BAlpha 7 IV has lower ISO min (native) (100 vs 200)
Key specs at a glance
Size and weight, to scale
X-T20
118 × 83 × 41 mm
383 g (0.84 lb / 13.51 oz)
Alpha 7 IV
131 × 96 × 80 mm
658 g (1.45 lb / 23.21 oz)
X-T20 is 13mm narrower, 14mm shorter, and 38mm thinner than Alpha 7 IV.
X-T20 is 275 g lighter than Alpha 7 IV.
Depth (front-to-back): 41mm X-T20 · 80mm Alpha 7 IV
Sensor size, to scale
X-T20
23.6 × 15.6 mm · APS-C
368 mm² area
Alpha 7 IV
35.9 × 23.9 mm · Full Frame
858 mm² area
2.3× larger sensor area = shallower depth of field and better low-light performance.
Lens ecosystem
Native lens selection
X-T20
Fujifilm X
105+
native lenses available
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
X-T20
Dimensions (W×H×D mm)
Adds 118.4, 82.8, 41.4
Card types
Adds SD UHS-I
Weight
383 g vs 658 g — lower is better
Burst (electronic)
14 fps vs 10 fps — higher is better
AF frame coverage
100 % vs 94 % — higher is better
Reasons to choose
Alpha 7 IV
AF low-light limit
-4 EV vs -1 EV — lower 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 23 frames — higher is better
Subject recognition
Adds Animal, Bird, Insect…
Max video bit rate
600 Mbps vs 100 Mbps — higher is better
Codecs
Adds XAVC HS, XAVC S, XAVC S-I…
Both cameras share
- ✓Eye AF — Both support eye af
- ✓EVF refresh rate — Both 120 Hz
- ✓Touchscreen — Both support touchscreen
- ✓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.
X-T20
Pros
- ✓24MP X-Trans III
- ✓4K video
- ✓Compact body
Cons
- –No IBIS
- –Older AF
- –Single card slot
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
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for wildlife, X-T20 or Alpha 7 IV?
Alpha 7 IV scores 8.0/10 versus 1.5/10 for X-T20 — Bird AF subject recognition.
What's the resolution difference between the X-T20 and Alpha 7 IV?
X-T20 is 24.3 MP and Alpha 7 IV is 33 MP, so the Alpha 7 IV captures more detail for cropping and large prints.
Do the X-T20 and Alpha 7 IV have in-body image stabilization?
X-T20 does not have IBIS, while alpha 7 IV has 5.5-stop in-body image stabilization.
Which shoots faster bursts — the X-T20 or the Alpha 7 IV?
X-T20 reaches 14 fps electronic. Alpha 7 IV reaches 10 fps electronic.
What's the weight difference between the X-T20 and Alpha 7 IV?
X-T20 weighs 383 g and Alpha 7 IV weighs 658 g, so the X-T20 is 275 g lighter.
Do the X-T20 and Alpha 7 IV record 4K video?
X-T20: 4K up to 30p. Alpha 7 IV: 4K up to 60p.
Are the X-T20 and Alpha 7 IV weather sealed?
X-T20: No. Alpha 7 IV: Yes.
Which has better battery life?
Rated battery life is 350 shots (CIPA) for the X-T20 and 580 shots for the Alpha 7 IV, giving the Alpha 7 IV the edge.
How much does each cost?
X-T20 launched at $899 and Alpha 7 IV at $2,499. The X-T20 is $1,600 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of Fujifilm and Sony press materials.