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 7 IV
33MP hybrid all-rounder with 10-bit 4K 60p and AI-powered subject tracking.
$2,499
Released Oct 2021
GR IIIx HDF is 2.5 years newer.
Wins
GR IIIx HDF
Wins
Alpha 7 IV
2 categories tied
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TL;DR — Key differences
- BAlpha 7 IV has higher AF points / zones (759 vs 49)
- BAlpha 7 IV has higher Battery life (CIPA) (580 shots vs 200 shots)
- AGR IIIx HDF has lower Weight (262 g vs 658 g)
- BAlpha 7 IV has higher Burst (mechanical) (10 fps vs 4 fps)
- BAlpha 7 IV has higher Burst (electronic) (10 fps vs 4 fps)
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 7 IV
131 × 96 × 80 mm
658 g (1.45 lb / 23.21 oz)
GR IIIx HDF is 22mm narrower, 35mm shorter, and 45mm thinner than Alpha 7 IV.
GR IIIx HDF is 396 g lighter than Alpha 7 IV.
Depth (front-to-back): 35mm GR IIIx HDF · 80mm Alpha 7 IV
Sensor size, to scale
GR IIIx HDF
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
GR IIIx HDF: mount data unavailable
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
GR IIIx HDF
Subject recognition
Adds Face, Eye
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
Weight
262 g vs 658 g — lower is better
ISO max (native)
102,400 vs 51,200 — higher is better
Reasons to choose
Alpha 7 IV
Subject recognition
Adds Human, Animal, Bird…
Codecs
Adds XAVC HS, XAVC S, XAVC S-I…
Dimensions (W×H×D mm)
Adds 131.3, 96.4, 79.8
Card types
Adds CFexpress Type A, SD UHS-II
AF points / zones
759 vs 49 — higher is better
Battery life (CIPA)
580 shots vs 200 shots — higher is better
Burst (mechanical)
10 fps vs 4 fps — higher is better
Burst (electronic)
10 fps vs 4 fps — higher is better
Both cameras share
- ✓ISO min (native) — Both 100
- ✓Eye AF — Both support eye af
- ✓4K max frame rate — Both 60 fps
- ✓In-body stabilization — Both support in-body stabilization
- ✓Touchscreen — Both support touchscreen
- ✓Wi-Fi — Both support wi-fi
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 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 GR IIIx HDF and Alpha 7 IV at major authorized retailers.
Ricoh GR IIIx HDF
Sony Alpha 7 IV
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for wildlife, GR IIIx HDF or Alpha 7 IV?
Alpha 7 IV scores 8.0/10 versus 2.0/10 for GR IIIx HDF — Bird AF subject recognition.
What's the resolution difference between the GR IIIx HDF and Alpha 7 IV?
GR IIIx HDF is 24.24 MP and Alpha 7 IV is 33 MP, so the Alpha 7 IV captures more detail for cropping and large prints.
Do the GR IIIx HDF and Alpha 7 IV have in-body image stabilization?
GR IIIx HDF has in-body image stabilization, while alpha 7 IV has 5.5-stop in-body image stabilization.
Which shoots faster bursts — the GR IIIx HDF or the Alpha 7 IV?
GR IIIx HDF reaches 4 fps electronic. Alpha 7 IV reaches 10 fps electronic.
What's the weight difference between the GR IIIx HDF and Alpha 7 IV?
GR IIIx HDF weighs 262 g and Alpha 7 IV weighs 658 g, so the GR IIIx HDF is 396 g lighter.
Do the GR IIIx HDF and Alpha 7 IV record 4K video?
GR IIIx HDF: 4K up to 60p. Alpha 7 IV: 4K up to 60p.
Are the GR IIIx HDF and Alpha 7 IV weather sealed?
GR IIIx HDF: No. Alpha 7 IV: Yes.
Which has better battery life?
Rated battery life is 200 shots (CIPA) for the GR IIIx HDF and 580 shots for the Alpha 7 IV, giving the Alpha 7 IV the edge.
How much does each cost?
GR IIIx HDF launched at $1,146 and Alpha 7 IV at $2,499. The GR IIIx HDF is $1,353 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of Ricoh and Sony press materials.