Canon
EOS 77D
Mid-tier APS-C DSLR with top LCD, Dual Pixel AF, and the same 24MP sensor as the 80D.
$899
Launch priceReleased Feb 2017
Sony
Alpha 7 IV
33MP hybrid all-rounder with 10-bit 4K 60p and AI-powered subject tracking.
$2,499
Launch priceReleased Oct 2021
Alpha 7 IV is 4.7 years newer.
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Wins
EOS 77D
Wins
Alpha 7 IV
5 categories tied
Which would you choose?
TL;DR — Key differences
- BAlpha 7 IV has higher RAW buffer depth (828 frames vs 60 frames)
- BAlpha 7 IV has higher Max video bit rate (600 Mbps vs 150 Mbps)
- BAlpha 7 IV has higher ISO max (native) (51,200 vs 25,600)
- BAlpha 7 IV has higher Burst (mechanical) (10 fps vs 6 fps)
- BAlpha 7 IV has higher EVF resolution (3,686,400 vs 2,360,000)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to shareEOS 77D
131 × 100 × 76 mm
540 g (1.19 lb / 19.05 oz)
Credit card
85.6 × 54 mm
for scale
Alpha 7 IV
131 × 96 × 80 mm
658 g (1.45 lb / 23.21 oz)
EOS 77D is 4mm thinner than Alpha 7 IV but it is also 3mm taller.
EOS 77D is 118 g lighter than Alpha 7 IV.
Depth (front-to-back): 76mm EOS 77D · 80mm Alpha 7 IV
Back view, to scale
Width × Height — same proportions as the front of the body.
EOS 77D
131 × 100 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.
EOS 77D
131 × 76 mm
Credit card
85.6 × 54 mm
Alpha 7 IV
131 × 80 mm
Sensor size, to scale
EOS 77D
22.3 × 14.9 mm · APS-C
332 mm² area
Alpha 7 IV
35.9 × 23.9 mm · Full Frame
858 mm² area
2.6× larger sensor area = shallower depth of field and better low-light performance.
Lens ecosystem
Native lens selection
EOS 77D
Canon EF
300+
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
EOS 77D
AF low-light limit
-6.5 EV vs -4 EV — lower is better
Dimensions (W×H×D mm)
Adds 131, 99.8, 76.2
Pre-Capture / Pre-Release
Only EOS 77D supports it
Burst (electronic)
15 fps vs 10 fps — higher is better
AF points / zones
1053 vs 759 — higher is better
Subject recognition
Adds Vehicle
Weight
540 g vs 658 g — lower is better
Battery life (CIPA)
640 shots vs 580 shots — higher is better
Reasons to choose
Alpha 7 IV
Dimensions (W×H×D mm)
Adds 131.3, 96.4, 79.8
RAW buffer depth
828 frames vs 60 frames — higher is better
Max video bit rate
600 Mbps vs 150 Mbps — higher is better
Codecs
Adds XAVC HS, XAVC S, XAVC S-I
ISO max (native)
51,200 vs 25,600 — higher is better
Subject recognition
Adds Insect, Car/Train, Airplane
Internal RAW video
Only Alpha 7 IV supports it
Weather sealing
Only Alpha 7 IV supports it
Both cameras share
- ✓AA filter — Both support aa filter
- ✓ISO min (native) — Both 100
- ✓Eye AF — Both support eye af
- ✓Animal / bird AF — Both support animal / bird af
- ✓4K max frame rate — Both 60 fps
- ✓In-body stabilization (IBIS) — Both support in-body stabilization (ibis)
Pros & cons at a glance
Editorially curated highlights and trade-offs.
EOS 77D
Pros
- ✓Top LCD
- ✓Dual Pixel AF
- ✓24MP APS-C
- ✓Lightweight DSLR
Cons
- –No weather sealing
- –No IBIS
- –DSLR declining
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 EOS 77D and Alpha 7 IV at major authorized retailers.
Canon EOS 77D
Sony Alpha 7 IV
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for portraits, EOS 77D or Alpha 7 IV?
Alpha 7 IV scores 9.0/10 versus 5.0/10 for EOS 77D — 33MP — ample resolution for portraits.
What's the resolution difference between the EOS 77D and Alpha 7 IV?
EOS 77D is 24.2 MP and Alpha 7 IV is 33 MP, so the Alpha 7 IV captures more detail for cropping and large prints.
Do the EOS 77D and Alpha 7 IV have in-body image stabilization?
EOS 77D has 6-stop in-body image stabilization, while Alpha 7 IV has 5.5-stop in-body image stabilization.
Which shoots faster bursts — the EOS 77D or the Alpha 7 IV?
EOS 77D reaches 15 fps electronic. Alpha 7 IV reaches 10 fps electronic.
What's the weight difference between the EOS 77D and Alpha 7 IV?
EOS 77D weighs 540 g and Alpha 7 IV weighs 658 g, so the EOS 77D is 118 g lighter.
Do the EOS 77D and Alpha 7 IV record 4K video?
EOS 77D: 4K up to 60p. Alpha 7 IV: 4K up to 60p.
Are the EOS 77D and Alpha 7 IV weather sealed?
EOS 77D: No. Alpha 7 IV: Yes.
Which has better battery life?
Rated battery life is 640 shots (CIPA) for the EOS 77D and 580 shots for the Alpha 7 IV, giving the EOS 77D the edge.
How much does each cost?
EOS 77D launched at $899 and Alpha 7 IV at $2,499. The EOS 77D is $1,600 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way EOS 77D vs Alpha 7 IV vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.
Product images courtesy of Canon and Sony press materials.