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
Launch priceReleased Apr 2024
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.
$2,199
Launch priceReleased Jan 2026
GR IV Monochrome is 1.8 years newer.
Affiliate disclosure: As an Amazon Associate, Cameraegg earns from qualifying purchases. Cameraegg may also earn commission from B&H links, at no extra cost to you.
Wins
GR IIIx HDF
Wins
GR IV Monochrome
7 categories tied
Which would you choose?
TL;DR — Key differences
- BGR IV Monochrome has higher ISO max (native) (409,600 vs 102,400)
- AGR IIIx HDF has lower ISO min (native) (100 vs 160)
- BGR IV Monochrome has higher Battery life (CIPA) (250 shots vs 200 shots)
- BGR IV Monochrome has higher Resolution (25.74 MP vs 24.24 MP)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to shareGR IIIx HDF
109 × 62 × 35 mm
262 g (0.58 lb / 9.24 oz)
Credit card
85.6 × 54 mm
for scale
GR IV Monochrome
109 × 61 × 33 mm
262 g (0.58 lb / 9.24 oz)
GR IIIx HDF is 1mm taller and 3mm thicker than GR IV Monochrome.
GR IIIx HDF and GR IV Monochrome weigh the same.
Depth (front-to-back): 35mm GR IIIx HDF · 33mm GR IV Monochrome
Back view, to scale
Width × Height — same proportions as the front of the body.
GR IIIx HDF
109 × 62 mm
Credit card
85.6 × 54 mm
GR IV Monochrome
109 × 61 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
GR IIIx HDF
109 × 35 mm
Credit card
85.6 × 54 mm
GR IV Monochrome
109 × 33 mm
Sensor size, to scale
GR IIIx HDF
23.5 × 15.6 mm · APS-C
367 mm² area
GR IV Monochrome
23.3 × 15.5 mm · APS-C
361 mm² area
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
Card types
Adds SD, SDHC, SDXC UHS-I
Dimensions (W×H×D mm)
Adds 61.9, 35.2
ISO min (native)
100 vs 160 — lower is better
Reasons to choose
GR IV Monochrome
Card types
Adds microSD, microSDHC, microSDXC UHS-I
ISO max (native)
409,600 vs 102,400 — higher is better
Dimensions (W×H×D mm)
Adds 61.1, 32.7
Battery life (CIPA)
250 shots vs 200 shots — higher is better
Resolution
25.74 MP vs 24.24 MP — higher is better
Both cameras share
- ✓AF points / zones — Both 49
- ✓Eye AF — Both support eye af
- ✓Burst (mechanical) — Both 4 fps
- ✓Burst (electronic) — Both 4 fps
- ✓4K max frame rate — Both 60 fps
- ✓1080p max frame rate — Both 60 fps
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
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
Decided which one is right for you?
Compare live prices for the GR IIIx HDF and GR IV Monochrome at major authorized retailers.
Ricoh GR IIIx HDF
Ricoh GR IV Monochrome
Affiliate disclosure: As an Amazon Associate, Cameraegg earns from qualifying purchases. Cameraegg may also earn commission from B&H links, at no extra cost to you.
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for portraits, GR IIIx HDF or GR IV Monochrome?
GR IIIx HDF scores 6.5/10 versus 6.5/10 for GR IV Monochrome — 24.24MP — solid resolution.
What's the resolution difference between the GR IIIx HDF and GR IV Monochrome?
GR IIIx HDF is 24.24 MP and GR IV Monochrome is 25.74 MP, so the GR IV Monochrome captures more detail for cropping and large prints.
Do the GR IIIx HDF and GR IV Monochrome have in-body image stabilization?
GR IIIx HDF has in-body image stabilization, while GR IV Monochrome has in-body image stabilization.
Which shoots faster bursts — the GR IIIx HDF or the GR IV Monochrome?
GR IIIx HDF reaches 4 fps electronic. GR IV Monochrome reaches 4 fps electronic.
What's the weight difference between the GR IIIx HDF and GR IV Monochrome?
Both bodies weigh roughly 262 g.
Do the GR IIIx HDF and GR IV Monochrome record 4K video?
GR IIIx HDF: 4K up to 60p. GR IV Monochrome: 4K up to 60p.
Are the GR IIIx HDF and GR IV Monochrome weather sealed?
GR IIIx HDF: No. GR IV Monochrome: No.
Which has better battery life?
Rated battery life is 200 shots (CIPA) for the GR IIIx HDF and 250 shots for the GR IV Monochrome, giving the GR IV Monochrome the edge.
How much does each cost?
GR IIIx HDF launched at $1,146 and GR IV Monochrome at $2,199. The GR IIIx HDF is $1,053 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way GR IIIx HDF vs GR IV Monochrome vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed July 2026.
Product images courtesy of Ricoh press materials.