Ricoh
WG-90
Rugged waterproof compact with 16MP sensor, 5x 28-140mm equivalent zoom, microscope mode, and ring light.
$329
Released Nov 2023
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 2.6 years newer.
Wins
WG-90
Wins
Alpha 7R VI
TL;DR — Key differences
- BAlpha 7R VI has higher AF points / zones (759 vs 9)
- BAlpha 7R VI has higher ISO max (native) (32,000 vs 6,400)
- BAlpha 7R VI has higher Resolution (66.8 MP vs 16 MP)
- BAlpha 7R VI has higher Max video bit rate (600 Mbps vs 150 Mbps)
- AWG-90 has lower Weight (194 g vs 713 g)
Key specs at a glance
Size and weight, to scale
WG-90
123 × 62 × 30 mm
194 g (0.43 lb / 6.84 oz)
Alpha 7R VI
133 × 97 × 83 mm
713 g (1.57 lb / 25.15 oz)
WG-90 is 10mm narrower, 35mm shorter, and 53mm thinner than Alpha 7R VI.
WG-90 is 519 g lighter than Alpha 7R VI.
Depth (front-to-back): 30mm WG-90 · 83mm Alpha 7R VI
Back view, to scale
Width × Height — same proportions as the front of the body.
WG-90
123 × 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.
WG-90
123 × 30 mm
Alpha 7R VI
133 × 83 mm
Sensor size, to scale
Alpha 7R VI
35.9 × 24 mm · Full Frame
862 mm² area
Lens ecosystem
Native lens selection
WG-90: 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
WG-90
Subject recognition
Adds Face, Pet
Dimensions (W×H×D mm)
Adds 122.5, 61.5, 29.5
Card types
Adds SD, SDHC, SDXC
Weight
194 g vs 713 g — lower is better
Weather sealing
Only WG-90 supports it
Reasons to choose
Alpha 7R VI
Subject recognition
Adds Human, Animal, Bird…
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 9 — higher is better
ISO max (native)
32,000 vs 6,400 — higher is better
Codecs
Adds XAVC HS, XAVC S, XAVC S-I…
Resolution
66.8 MP vs 16 MP — higher is better
Max video bit rate
600 Mbps vs 150 Mbps — higher is better
Pros & cons at a glance
Editorially curated highlights and trade-offs.
WG-90
Pros
- ✓Waterproof and shockproof
- ✓5x optical zoom
- ✓Microscope mode
- ✓Compact rugged body
Cons
- –Small sensor
- –Full HD only
- –Basic LCD
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 portraits, WG-90 or Alpha 7R VI?
Alpha 7R VI scores 8.5/10 versus 1.0/10 for WG-90 — 66.8MP — excellent for large prints and crops.
What's the resolution difference between the WG-90 and Alpha 7R VI?
WG-90 is 16 MP and Alpha 7R VI is 66.8 MP, so the Alpha 7R VI captures more detail for cropping and large prints.
Do the WG-90 and Alpha 7R VI have in-body image stabilization?
WG-90 does not have IBIS, while alpha 7R VI has in-body image stabilization.
What's the weight difference between the WG-90 and Alpha 7R VI?
WG-90 weighs 194 g and Alpha 7R VI weighs 713 g, so the WG-90 is 519 g lighter.
Do the WG-90 and Alpha 7R VI record 4K video?
WG-90: Full HD. Alpha 7R VI: 8K (max), 4K up to 120p.
Are the WG-90 and Alpha 7R VI weather sealed?
WG-90: Yes. Alpha 7R VI: No.
Which has better battery life?
Rated battery life is 300 shots (CIPA) for the WG-90 and 600 shots for the Alpha 7R VI, giving the Alpha 7R VI the edge.
How much does each cost?
WG-90 launched at $329 and Alpha 7R VI at $4,499. The WG-90 is $4,170 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of Ricoh and Sony press materials.