Canon
EOS R100
Entry-level 24MP APS-C RF-mount camera with a small body, EVF, and simple stills-first feature set.
$479
Released May 2023
Sony
Alpha 7 IV
33MP hybrid all-rounder with 10-bit 4K 60p and AI-powered subject tracking.
$2,499
Released Oct 2021
EOS R100 is 1.6 years newer.
Wins
EOS R100
Wins
Alpha 7 IV
2 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 6 frames)
- AEOS R100 has higher AF points / zones (3975 vs 759)
- BAlpha 7 IV has higher Max video bit rate (600 Mbps vs 120 Mbps)
- BAlpha 7 IV has higher ISO max (native) (51,200 vs 12,800)
Key specs at a glance
Size and weight, to scale
EOS R100
116 × 86 × 69 mm
356 g (0.78 lb / 12.56 oz)
Alpha 7 IV
131 × 96 × 80 mm
658 g (1.45 lb / 23.21 oz)
EOS R100 is 15mm narrower, 11mm shorter, and 11mm thinner than Alpha 7 IV.
EOS R100 is 302 g lighter than Alpha 7 IV.
Depth (front-to-back): 69mm EOS R100 · 80mm Alpha 7 IV
Sensor size, to scale
EOS R100
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 R100
Canon RF
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
EOS R100
Dimensions (W×H×D mm)
Adds 116.3, 85.5, 68.8
Card types
Adds SD UHS-I
AF points / zones
3975 vs 759 — higher is better
Weight
356 g vs 658 g — lower is better
EVF magnification
0.95 × vs 0.78 × — higher is better
Reasons to choose
Alpha 7 IV
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 6 frames — higher is better
Subject recognition
Adds Animal, Bird, Insect…
Max video bit rate
600 Mbps vs 120 Mbps — higher is better
Codecs
Adds XAVC HS, XAVC S, XAVC S-I…
ISO max (native)
51,200 vs 12,800 — higher is better
Both cameras share
- ✓AA filter — Both support aa filter
- ✓ISO min (native) — Both 100
- ✓Eye AF — Both support eye af
- ✓Wi-Fi — Both support wi-fi
- ✓Bluetooth — Both support bluetooth
Pros & cons at a glance
Editorially curated highlights and trade-offs.
EOS R100
Pros
- ✓Very low entry price for Canon RF
- ✓Compact and lightweight body
- ✓Built-in EVF
- ✓Good image quality for beginners
Cons
- –Fixed non-touch LCD
- –Older DIGIC 8 processor
- –4K video is cropped and limited
- –No in-body stabilization
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, EOS R100 or Alpha 7 IV?
Alpha 7 IV scores 8.0/10 versus 0.0/10 for EOS R100 — Bird AF subject recognition.
What's the resolution difference between the EOS R100 and Alpha 7 IV?
EOS R100 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 EOS R100 and Alpha 7 IV have in-body image stabilization?
EOS R100 does not have IBIS, while alpha 7 IV has 5.5-stop in-body image stabilization.
Which shoots faster bursts — the EOS R100 or the Alpha 7 IV?
EOS R100 reaches 6.5 fps electronic. Alpha 7 IV reaches 10 fps electronic.
What's the weight difference between the EOS R100 and Alpha 7 IV?
EOS R100 weighs 356 g and Alpha 7 IV weighs 658 g, so the EOS R100 is 302 g lighter.
Do the EOS R100 and Alpha 7 IV record 4K video?
EOS R100: 4K up to 24p. Alpha 7 IV: 4K up to 60p.
Are the EOS R100 and Alpha 7 IV weather sealed?
EOS R100: No. Alpha 7 IV: Yes.
Which has better battery life?
Rated battery life is 430 shots (CIPA) for the EOS R100 and 580 shots for the Alpha 7 IV, giving the Alpha 7 IV the edge.
How much does each cost?
EOS R100 launched at $479 and Alpha 7 IV at $2,499. The EOS R100 is $2,020 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of Canon and Sony press materials.