OM System
PEN
First OM SYSTEM-branded PEN: compact rangefinder-style Micro Four Thirds body with 20.4MP Live MOS, 5-axis IBIS, built-in EVF, IPX1 sealing, and in-camera computational modes.
$1,000
Launch priceReleased Sep 2026
Sony
Alpha 7R VI
66.8MP stacked full-frame high-resolution body with 30fps bursts, 8K 30p, 4K 120p, and Sony's AI processing unit.
$4,499
Launch priceReleased Jun 2026
PEN is 3 months newer.
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Wins
PEN
Wins
Alpha 7R VI
1 categories tied
Which would you choose?
TL;DR — Key differences
- BAlpha 7R VI has higher AF points / zones (759 vs 121)
- BAlpha 7R VI has higher RAW buffer depth (150 frames vs 29 frames)
- BAlpha 7R VI has higher 4K max frame rate (120 fps vs 30 fps)
- BAlpha 7R VI has higher EVF resolution (9,437,184 vs 2,360,000)
- BAlpha 7R VI has higher Resolution (66.8 MP vs 20.4 MP)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to share
PEN
126 × 75 × 43 mm
393 g (0.87 lb / 13.86 oz)
Credit card
85.6 × 54 mm
for scale
Alpha 7R VI
133 × 97 × 83 mm
713 g (1.57 lb / 25.15 oz)
PEN is 7mm narrower, 22mm shorter, and 40mm thinner than Alpha 7R VI.
PEN is 320 g lighter than Alpha 7R VI.
Depth (front-to-back): 43mm PEN · 83mm Alpha 7R VI
Back view, to scale
Width × Height — same proportions as the front of the body.
PEN
126 × 75 mm
Credit card
85.6 × 54 mm
Alpha 7R VI
133 × 97 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
PEN
126 × 43 mm
Credit card
85.6 × 54 mm
Alpha 7R VI
133 × 83 mm
Sensor size, to scale
PEN
17.4 × 13 mm · Compact / large-type
226 mm² area
Alpha 7R VI
35.9 × 24 mm · Full Frame
862 mm² area
3.8× larger sensor area = shallower depth of field and better low-light performance.
Lens ecosystem
Native lens selection
PEN
Micro Four Thirds
130+
native lenses available
Alpha 7R VI
✓ 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
PEN
Dimensions (W×H×D mm)
Adds 125.8, 74.5, 43.3
Card types
Adds SD, SDHC, SDXC
Subject recognition
Adds Dog, Cat
Codecs
Adds MOV, MPEG-4 AVC
Pre-Capture / Pre-Release
Only PEN supports it
Weather sealing
Only PEN supports it
Weight
393 g vs 713 g — lower is better
EVF magnification
1.1 × vs 0.9 × — higher is better
Reasons to choose
Alpha 7R VI
AF low-light limit
-6 EV vs -3.5 EV — lower is better
Dimensions (W×H×D mm)
Adds 132.7, 96.9, 82.9
Card types
Adds CFexpress Type A, SDXC UHS-II
AF points / zones
759 vs 121 — higher is better
Subject recognition
Adds Animal, Bird, Eye…
RAW buffer depth
150 frames vs 29 frames — higher is better
Codecs
Adds XAVC HS, XAVC S, XAVC S-I…
4K max frame rate
120 fps vs 30 fps — higher is better
Both cameras share
- ✓Eye AF — Both support eye af
- ✓Animal / bird AF — Both support animal / bird af
- ✓Burst (electronic) — Both 30 fps
- ✓In-body stabilization (IBIS) — Both support in-body stabilization (ibis)
- ✓Touchscreen — Both support touchscreen
- ✓Wi-Fi — Both support wi-fi
Pros & cons at a glance
Editorially curated highlights and trade-offs.
PEN
Pros
- ✓393g rangefinder body with built-in 2.36M-dot EVF
- ✓First PEN with IPX1 dust/splash sealing
- ✓5-axis IBIS up to 5.5 stops + 121-point cross-type AF
- ✓Hi-Res, Live ND, Focus Stacking, HDR via CP button
- ✓4K / C4K video, vertical video, 3.5mm mic jack
Cons
- –Micro Four Thirds sensor vs APS-C/FF rivals
- –4K capped at 30p (C4K 24p only)
- –IPX1 is lighter sealing than OM-5 II / OM-3
- –Single SD slot, no headphone jack
Alpha 7R VI
Pros
- ✓66.8MP stacked full-frame sensor
- ✓30fps blackout-free electronic burst
- ✓8K 30p and 4K 120p video
- ✓5-axis sensor-shift stabilization
- ✓9.44M-dot HDR OLED EVF
Cons
- –Very expensive
- –Large files demand fast cards and storage
- –8K workflow can be heavy
Decided which one is right for you?
Compare live prices for the PEN and Alpha 7R VI at major authorized retailers.
OM System PEN
Sony Alpha 7R VI
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for video, PEN or Alpha 7R VI?
Alpha 7R VI scores 8.0/10 versus 3.0/10 for PEN — 8K recording for future-proof footage.
What's the resolution difference between the PEN and Alpha 7R VI?
PEN is 20.4 MP and Alpha 7R VI is 66.8 MP, so the Alpha 7R VI captures more detail for cropping and large prints.
Do the PEN and Alpha 7R VI have in-body image stabilization?
PEN has 5.5-stop in-body image stabilization, while Alpha 7R VI has in-body image stabilization.
Which shoots faster bursts — the PEN or the Alpha 7R VI?
PEN reaches 30 fps electronic. Alpha 7R VI reaches 30 fps electronic.
What's the weight difference between the PEN and Alpha 7R VI?
PEN weighs 393 g and Alpha 7R VI weighs 713 g, so the PEN is 320 g lighter.
Do the PEN and Alpha 7R VI record 4K video?
PEN: 4K up to 30p. Alpha 7R VI: 8K (max), 4K up to 120p.
Are the PEN and Alpha 7R VI weather sealed?
PEN: Yes. Alpha 7R VI: No.
Which has better battery life?
Rated battery life is 410 shots (CIPA) for the PEN and 600 shots for the Alpha 7R VI, giving the Alpha 7R VI the edge.
How much does each cost?
PEN launched at $1,000 and Alpha 7R VI at $4,499. The PEN is $3,499 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way PEN vs Alpha 7R VI vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed September 2026.
Product images courtesy of OM System and Sony press materials.