Nikon
D90
Historic enthusiast DX DSLR — first Nikon with HD video (720p24), 12.3MP sensor, 11-point AF, built-in flash commander, and proven F-mount ergonomics.
$999
Launch priceReleased Aug 2008
Ricoh
GR IV
Latest GR with 25.74MP APS-C sensor, 28mm equivalent lens, 5-axis SR, 53GB internal memory, and pocket street-camera handling.
$1,499
Launch priceReleased Jan 2026
GR IV is 17.3 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
D90
Wins
GR IV
2 categories tied
Which would you choose?
TL;DR — Key differences
- AD90 has higher AF points / zones (493 vs 49)
- BGR IV has higher ISO max (native) (204,800 vs 25,600)
- AD90 has higher Burst (electronic) (15 fps vs 4 fps)
- AD90 has higher Battery life (CIPA) (640 shots vs 250 shots)
- BGR IV has higher Resolution (25.74 MP vs 12.3 MP)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to shareD90
138 × 98 × 88 mm
520 g (1.15 lb / 18.34 oz)
Credit card
85.6 × 54 mm
for scale
GR IV
109 × 61 × 33 mm
262 g (0.58 lb / 9.24 oz)
D90 is 29mm wider, 37mm taller, and 55mm thicker than GR IV.
D90 is 258 g heavier than GR IV.
Depth (front-to-back): 88mm D90 · 33mm GR IV
Back view, to scale
Width × Height — same proportions as the front of the body.
D90
138 × 98 mm
Credit card
85.6 × 54 mm
GR IV
109 × 61 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
D90
138 × 88 mm
Credit card
85.6 × 54 mm
GR IV
109 × 33 mm
Sensor size, to scale
D90
23.5 × 15.6 mm · APS-C
367 mm² area
GR IV
23.3 × 15.5 mm · APS-C
361 mm² area
Lens ecosystem
Native lens selection
D90
✓ more lensesNikon F
270+
native lenses available
GR IV: mount data unavailable
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
D90
Subject recognition
Adds Human, Animal, Bird…
Codecs
Adds H.265, H.264
Dimensions (W×H×D mm)
Adds 138, 98, 88
Card types
Adds SD UHS-II
AF points / zones
493 vs 49 — higher is better
Burst (electronic)
15 fps vs 4 fps — higher is better
Battery life (CIPA)
640 shots vs 250 shots — higher is better
Animal / bird AF
Only D90 supports it
Reasons to choose
GR IV
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)
204,800 vs 25,600 — higher is better
Resolution
25.74 MP vs 12.3 MP — higher is better
Weight
262 g vs 520 g — lower 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 (IBIS) — Both support in-body stabilization (ibis)
- ✓Touchscreen — Both support touchscreen
- ✓Wi-Fi — Both support wi-fi
Pros & cons at a glance
Editorially curated highlights and trade-offs.
D90
Pros
- ✓First Nikon DSLR with HD video
- ✓Built-in flash commander
- ✓Mature F-mount ecosystem
- ✓Strong used value for learning
- ✓Live View with contrast AF
Cons
- –12.3MP dated resolution
- –720p video only
- –4.5 fps burst
- –No modern connectivity
GR IV
Pros
- ✓25.74MP APS-C sensor
- ✓5-axis sensor-shift SR
- ✓53GB internal memory
- ✓Pocketable 28mm GR lens
Cons
- –Fixed lens
- –No built-in EVF
- –Full HD video only
Decided which one is right for you?
Compare live prices for the D90 and GR IV at major authorized retailers.
Ricoh GR IV
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 wildlife, D90 or GR IV?
D90 scores 9.0/10 versus 1.0/10 for GR IV — Bird AF subject recognition.
What's the resolution difference between the D90 and GR IV?
D90 is 12.3 MP and GR IV is 25.74 MP, so the GR IV captures more detail for cropping and large prints.
Do the D90 and GR IV have in-body image stabilization?
D90 has 6-stop in-body image stabilization, while GR IV has in-body image stabilization.
Which shoots faster bursts — the D90 or the GR IV?
D90 reaches 15 fps electronic. GR IV reaches 4 fps electronic.
What's the weight difference between the D90 and GR IV?
D90 weighs 520 g and GR IV weighs 262 g, so the GR IV is 258 g lighter.
Do the D90 and GR IV record 4K video?
D90: 4K up to 60p. GR IV: 4K up to 60p.
Are the D90 and GR IV weather sealed?
D90: Yes. GR IV: No.
Which has better battery life?
Rated battery life is 640 shots (CIPA) for the D90 and 250 shots for the GR IV, giving the D90 the edge.
How much does each cost?
D90 launched at $999 and GR IV at $1,499. The D90 is $500 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way D90 vs GR IV vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.
Product images courtesy of Nikon and Ricoh press materials.