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Ricoh

GR IV Monochrome

Monochrome-only GR IV with 25.74MP APS-C sensor, red filter mode, 5-axis SR, and classic 28mm pocket street-camera design.

$1,699

Released Jan 2026

vs
Alpha 1 II

Sony

Alpha 1 II

50MP stacked flagship with 30fps RAW, 8K video, and Sony's fastest hybrid performance.

$6,499

Released Nov 2024

GR IV Monochrome is 1.2 years newer.

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Wins

2categories

GR IV Monochrome

PortraitVlogging

Wins

8categories

Alpha 1 II

Video & HybridWildlife

TL;DR — Key differences

GR IV Monochrome wins 2 categories·Alpha 1 II wins 3 categories
  • BAlpha 1 II has higher AF points / zones (759 vs 49)
  • AGR IV Monochrome has higher ISO max (native) (409,600 vs 32,000)
  • BAlpha 1 II has higher Burst (electronic) (30 fps vs 4 fps)
  • AGR IV Monochrome has lower Weight (262 g vs 743 g)
  • BAlpha 1 II has higher Burst (mechanical) (10 fps vs 4 fps)

Key specs at a glance

GR IV MonochromeAlpha 1 II
Resolution25.74 MP50.1 MP
SensorAPS-CFull Frame
ISO max409,60032,000
Burst4 fps30 fps
4K60 fps120 fps
IBISYes8.5-stop
Weight262 g743 g
Battery250 shots520 shots

Size and weight, to scale

GR IV Monochrome

109 × 61 × 33 mm

262 g (0.58 lb / 9.24 oz)

Alpha 1 II front view

Alpha 1 II

136 × 97 × 83 mm

743 g (1.64 lb / 26.21 oz)

GR IV Monochrome is 27mm narrower, 36mm shorter, and 50mm thinner than Alpha 1 II.

GR IV Monochrome is 481 g lighter than Alpha 1 II.

Depth (front-to-back): 33mm GR IV Monochrome · 83mm Alpha 1 II

Sensor size, to scale

GR IV Monochrome

23.3 × 15.5 mm · APS-C

361 mm² area

Alpha 1 II

35.9 × 24 mm · Full Frame

862 mm² area

2.4× larger sensor area = shallower depth of field and better low-light performance.

Lens ecosystem

Native lens selection

GR IV Monochrome: mount data unavailable

Alpha 1 II

✓ more lenses

Sony E

350+

native lenses available

80 first-party270 third-party

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

Use caseGR IV MonochromeAlpha 1 II
Portrait
6.5Good
8.5Excellent✓ wins
Sports & Action
0.5Limited
9.0Excellent✓ wins
Video & Hybrid
3.5Limited
9.5Excellent✓ wins
Landscape
2.5Limited
9.0Excellent✓ wins
Travel
5.5Fair
6.0Good✓ wins
Wildlife
1.0Limited
9.5Excellent✓ wins
Vlogging
6.5Good✓ wins
5.5Fair

Why pick one over the other

Reasons to choose

GR IV Monochrome

  • Subject recognition

    Adds Face, Eye

  • Codecs

    Adds MPEG-4 AVC/H.264, MOV

  • Dimensions (W×H×D mm)

    Adds 109.4, 61.1, 32.7

  • Card types

    Adds microSD, microSDHC, microSDXC UHS-I

  • ISO max (native)

    409,600 vs 32,000 — higher is better

  • Weight

    262 g vs 743 g — lower is better

Reasons to choose

Alpha 1 II

  • Subject recognition

    Adds Human, Animal, Bird…

  • Codecs

    Adds XAVC HS, XAVC S, XAVC S-I…

  • Dimensions (W×H×D mm)

    Adds 136.1, 96.9, 82.9

  • Card types

    Adds CFexpress Type A, SD UHS-II

  • AF points / zones

    759 vs 49 — higher is better

  • Burst (electronic)

    30 fps vs 4 fps — higher is better

  • Burst (mechanical)

    10 fps vs 4 fps — higher is better

  • Battery life (CIPA)

    520 shots vs 250 shots — higher is better

Both cameras share

  • Eye AFBoth support eye af
  • In-body stabilizationBoth support in-body stabilization
  • TouchscreenBoth support touchscreen
  • Wi-FiBoth support wi-fi
  • BluetoothBoth support bluetooth

Pros & cons at a glance

Editorially curated highlights and trade-offs.

GR IV Monochrome

Pros

  • Monochrome APS-C sensor
  • ISO 160-409600
  • 5-axis SR
  • Red filter mode

Cons

  • Black-and-white only
  • Fixed lens
  • Full HD video only

Alpha 1 II

Pros

  • 50MP stacked sensor
  • 30fps blackout-free burst
  • 8K 30p video
  • Best Sony AF

Cons

  • Very expensive
  • Complex menus
  • Large files

Decided which one is right for you?

Compare live prices for the GR IV Monochrome and Alpha 1 II at major authorized retailers.

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Full specifications

= category winner

GR IV Monochrome
Alpha 1 II
Resolution
25.74 MP
50.1 MP+95%
Sensor type
APS-C Monochrome CMOS
Full Frame Stacked Exmor RS CMOS
Sensor size
23.3 x 15.5 mm
35.9 × 24.0 mm
AA filter
No
Yes
GR IV Monochrome
Alpha 1 II
AF system
Hybrid AF (image-plane phase detection + contrast detection)
Fast Hybrid AF (phase-detection / contrast-detection)
AF points / zones
49
75915.5× more
AF frame coverage
94 %
AF low-light limit
-4 EV
Eye AF
Yes
Yes
Animal / bird AF
No
Yes
Subject recognition
Face, Eye
Human, Animal, Bird, Insect, Car/Train, Airplane
GR IV Monochrome
Alpha 1 II
Burst (mechanical)
4 fps
10 fps2.5× more
Burst (electronic)
4 fps
30 fps7.5× more
Pre-Capture / Pre-Release
No
Yes
RAW buffer depth
200 frames
GR IV Monochrome
Alpha 1 II
Max resolution
Full HD
8K
4K max frame rate
60 fps
120 fps2× more
Max video bit rate
150 Mbps
Internal RAW video
No
Yes
Log profile
Standard profiles
S-Log3 / HLG / S-Cinetone
Codecs
MPEG-4 AVC/H.264, MOV
XAVC HS, XAVC S, XAVC S-I, H.265, H.264
GR IV Monochrome
Alpha 1 II
Weight
262 g−481 g less
743 g
Dimensions (W×H×D mm)
109.4 × 61.1 × 32.7 mm
136.1 × 96.9 × 82.9 mm
Weather sealing
No
Yes

Frequently asked

Quick answers generated from verified specs.

Which is better for sports, GR IV Monochrome or Alpha 1 II?

Alpha 1 II scores 9.0/10 versus 0.5/10 for GR IV Monochrome — 30fps burst — pro-level action capture.

What's the resolution difference between the GR IV Monochrome and Alpha 1 II?

GR IV Monochrome is 25.74 MP and Alpha 1 II is 50.1 MP, so the Alpha 1 II captures more detail for cropping and large prints.

Do the GR IV Monochrome and Alpha 1 II have in-body image stabilization?

GR IV Monochrome has in-body image stabilization, while alpha 1 II has 8.5-stop in-body image stabilization.

Which shoots faster bursts — the GR IV Monochrome or the Alpha 1 II?

GR IV Monochrome reaches 4 fps electronic. Alpha 1 II reaches 30 fps electronic.

What's the weight difference between the GR IV Monochrome and Alpha 1 II?

GR IV Monochrome weighs 262 g and Alpha 1 II weighs 743 g, so the GR IV Monochrome is 481 g lighter.

Do the GR IV Monochrome and Alpha 1 II record 4K video?

GR IV Monochrome: 4K up to 60p. Alpha 1 II: 8K (max), 4K up to 120p.

Are the GR IV Monochrome and Alpha 1 II weather sealed?

GR IV Monochrome: No. Alpha 1 II: Yes.

Which has better battery life?

Rated battery life is 250 shots (CIPA) for the GR IV Monochrome and 520 shots for the Alpha 1 II, giving the Alpha 1 II the edge.

How much does each cost?

GR IV Monochrome launched at $1,699 and Alpha 1 II at $6,499. The GR IV Monochrome is $4,800 less.

Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.

Product images courtesy of Ricoh and Sony press materials.