Nikon
D7100
24MP APS-C DSLR with no AA filter, 51-point AF, and dual SD slots — a DX classic.
$1,199
Launch priceReleased Feb 2013
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 8.7 years newer.
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Wins
D7100
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 shareD7100
136 × 106 × 76 mm
765 g (1.69 lb / 26.98 oz)
Credit card
85.6 × 54 mm
for scale
Alpha 7 IV
131 × 96 × 80 mm
658 g (1.45 lb / 23.21 oz)
D7100 is 4mm thinner than Alpha 7 IV but it is also 4mm wider and 10mm taller.
D7100 is 107 g heavier than Alpha 7 IV.
Depth (front-to-back): 76mm D7100 · 80mm Alpha 7 IV
Back view, to scale
Width × Height — same proportions as the front of the body.
D7100
136 × 106 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.
D7100
136 × 76 mm
Credit card
85.6 × 54 mm
Alpha 7 IV
131 × 80 mm
Sensor size, to scale
D7100
23.5 × 15.6 mm · APS-C
367 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
D7100
Nikon F
270+
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
D7100
AF low-light limit
-8.5 EV vs -4 EV — lower is better
Dimensions (W×H×D mm)
Adds 135.5, 106, 76
Pre-Capture / Pre-Release
Only D7100 supports it
Burst (electronic)
15 fps vs 10 fps — higher is better
Subject recognition
Adds Vehicle
Battery life (CIPA)
640 shots vs 580 shots — higher is better
IBIS effectiveness
6 stops vs 5.5 stops — 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
AA filter
Only Alpha 7 IV supports it
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
Both cameras share
- ✓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)
- ✓Weather sealing — Both support weather sealing
Pros & cons at a glance
Editorially curated highlights and trade-offs.
D7100
Pros
- ✓No AA filter
- ✓51-point AF
- ✓Dual SD slots
- ✓Pro build for DX
Cons
- –Very dated
- –No 4K
- –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 D7100 and Alpha 7 IV at major authorized retailers.
Nikon D7100
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, D7100 or Alpha 7 IV?
Alpha 7 IV scores 9.0/10 versus 6.5/10 for D7100 — 33MP — ample resolution for portraits.
What's the resolution difference between the D7100 and Alpha 7 IV?
D7100 is 24.1 MP and Alpha 7 IV is 33 MP, so the Alpha 7 IV captures more detail for cropping and large prints.
Do the D7100 and Alpha 7 IV have in-body image stabilization?
D7100 has 6-stop in-body image stabilization, while Alpha 7 IV has 5.5-stop in-body image stabilization.
Which shoots faster bursts — the D7100 or the Alpha 7 IV?
D7100 reaches 15 fps electronic. Alpha 7 IV reaches 10 fps electronic.
What's the weight difference between the D7100 and Alpha 7 IV?
D7100 weighs 765 g and Alpha 7 IV weighs 658 g, so the Alpha 7 IV is 107 g lighter.
Do the D7100 and Alpha 7 IV record 4K video?
D7100: 4K up to 60p. Alpha 7 IV: 4K up to 60p.
Are the D7100 and Alpha 7 IV weather sealed?
D7100: Yes. Alpha 7 IV: Yes.
Which has better battery life?
Rated battery life is 640 shots (CIPA) for the D7100 and 580 shots for the Alpha 7 IV, giving the D7100 the edge.
How much does each cost?
D7100 launched at $1,199 and Alpha 7 IV at $2,499. The D7100 is $1,300 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way D7100 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 Nikon and Sony press materials.