Ricoh
GR IIIx HDF
GR IIIx variant with built-in Highlight Diffusion Filter and a 40mm equivalent lens for softer street photography rendering.
$1,146
Released Apr 2024
Sony
Alpha 7R VI
66.8MP fully-stacked full-frame high-resolution body with 30fps bursts, 8K 30p, 4K 120p, and Sony's new BIONZ XR2 engine.
$4,499
Released Jun 2026
Alpha 7R VI is 2.2 years newer.
Wins
GR IIIx HDF
Wins
Alpha 7R VI
1 categories tied
TL;DR — Key differences
- BAlpha 7R VI has higher AF points / zones (759 vs 49)
- BAlpha 7R VI has higher Burst (electronic) (30 fps vs 4 fps)
- AGR IIIx HDF has higher ISO max (native) (102,400 vs 32,000)
- BAlpha 7R VI has higher Battery life (CIPA) (600 shots vs 200 shots)
- BAlpha 7R VI has higher Resolution (66.8 MP vs 24.24 MP)
Key specs at a glance
Size and weight, to scale
GR IIIx HDF
109 × 62 × 35 mm
262 g (0.58 lb / 9.24 oz)
Alpha 7R VI
133 × 97 × 83 mm
713 g (1.57 lb / 25.15 oz)
GR IIIx HDF is 23mm narrower, 35mm shorter, and 48mm thinner than Alpha 7R VI.
GR IIIx HDF is 451 g lighter than Alpha 7R VI.
Depth (front-to-back): 35mm GR IIIx HDF · 83mm Alpha 7R VI
Back view, to scale
Width × Height — same proportions as the front of the body.
GR IIIx HDF
109 × 62 mm
Alpha 7R VI
133 × 97 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
GR IIIx HDF
109 × 35 mm
Alpha 7R VI
133 × 83 mm
Sensor size, to scale
GR IIIx HDF
23.5 × 15.6 mm · APS-C
367 mm² area
Alpha 7R VI
35.9 × 24 mm · Full Frame
862 mm² area
2.3× larger sensor area = shallower depth of field and better low-light performance.
Lens ecosystem
Native lens selection
GR IIIx HDF: mount data unavailable
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
GR IIIx HDF
Codecs
Adds MPEG-4 AVC/H.264, MOV
Dimensions (W×H×D mm)
Adds 109.4, 61.9, 35.2
Card types
Adds SD, SDHC, SDXC UHS-I
ISO max (native)
102,400 vs 32,000 — higher is better
Weight
262 g vs 713 g — lower is better
Subject recognition
Adds Face
Reasons to choose
Alpha 7R VI
Codecs
Adds XAVC HS, XAVC S, XAVC S-I…
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 49 — higher is better
Burst (electronic)
30 fps vs 4 fps — higher is better
Subject recognition
Adds Human, Animal, Bird…
Battery life (CIPA)
600 shots vs 200 shots — higher is better
Resolution
66.8 MP vs 24.24 MP — higher is better
Both cameras share
- ✓ISO min (native) — Both 100
- ✓Eye AF — Both support eye af
- ✓In-body stabilization — Both support in-body stabilization
- ✓Touchscreen — Both support touchscreen
- ✓Wi-Fi — Both support wi-fi
- ✓Bluetooth — Both support bluetooth
Pros & cons at a glance
Editorially curated highlights and trade-offs.
GR IIIx HDF
Pros
- ✓Built-in HDF effect
- ✓40mm equivalent GR lens
- ✓Pocketable APS-C
- ✓3-axis SR
Cons
- –No ND filter
- –Fixed lens
- –Full HD video only
Alpha 7R VI
Pros
- ✓66.8MP fully-stacked Exmor RS sensor
- ✓30fps blackout-free electronic burst
- ✓8K 30p and 4K 120p video
- ✓8.5-stop in-body stabilization
- ✓9.44M-dot HDR OLED EVF
Cons
- –Very expensive
- –Large files demand fast cards and storage
- –8K workflow can be heavy
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for sports, GR IIIx HDF or Alpha 7R VI?
Alpha 7R VI scores 5.5/10 versus 0.5/10 for GR IIIx HDF — 30fps burst — pro-level action capture.
What's the resolution difference between the GR IIIx HDF and Alpha 7R VI?
GR IIIx HDF is 24.24 MP and Alpha 7R VI is 66.8 MP, so the Alpha 7R VI captures more detail for cropping and large prints.
Do the GR IIIx HDF and Alpha 7R VI have in-body image stabilization?
GR IIIx HDF has in-body image stabilization, while alpha 7R VI has in-body image stabilization.
Which shoots faster bursts — the GR IIIx HDF or the Alpha 7R VI?
GR IIIx HDF reaches 4 fps electronic. Alpha 7R VI reaches 30 fps electronic.
What's the weight difference between the GR IIIx HDF and Alpha 7R VI?
GR IIIx HDF weighs 262 g and Alpha 7R VI weighs 713 g, so the GR IIIx HDF is 451 g lighter.
Do the GR IIIx HDF and Alpha 7R VI record 4K video?
GR IIIx HDF: 4K up to 60p. Alpha 7R VI: 8K (max), 4K up to 120p.
Are the GR IIIx HDF and Alpha 7R VI weather sealed?
GR IIIx HDF: No. Alpha 7R VI: No.
Which has better battery life?
Rated battery life is 200 shots (CIPA) for the GR IIIx HDF and 600 shots for the Alpha 7R VI, giving the Alpha 7R VI the edge.
How much does each cost?
GR IIIx HDF launched at $1,146 and Alpha 7R VI at $4,499. The GR IIIx HDF is $3,353 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of Ricoh and Sony press materials.