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Nikon

D7100

24MP APS-C DSLR with no AA filter, 51-point AF, and dual SD slots — a DX classic.

$1,199

Launch price

Released Feb 2013

vs
GR IV

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 price

Released Jan 2026

GR IV is 12.8 years newer.

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Wins

5categories

D7100

WildlifeSports & Action

Wins

3categories

GR IV

PortraitVlogging

2 categories tied

Which would you choose?

TL;DR — Key differences

D7100 wins 3 categories·GR IV wins 2 categories
  • AD7100 has higher AF points / zones (493 vs 49)
  • BGR IV has higher ISO max (native) (204,800 vs 25,600)
  • AD7100 has higher Burst (electronic) (15 fps vs 4 fps)
  • BGR IV has lower Weight (262 g vs 765 g)
  • AD7100 has higher Battery life (CIPA) (640 shots vs 250 shots)

Key specs at a glance

D7100GR IV
Resolution24.1 MP25.74 MP
SensorAPS-CAPS-C
ISO max25,600204,800
Burst15 fps4 fps
4K60 fps60 fps
IBIS6-stopYes
Weight765 g262 g
Battery640 shots250 shots

Size and weight, to scale

D7100

136 × 106 × 76 mm

765 g (1.69 lb / 26.98 oz)

Credit card shown to scale as a size reference (ISO 7810, 85.6 × 54 mm)

Credit card

85.6 × 54 mm

for scale

GR IV front view

GR IV

109 × 61 × 33 mm

262 g (0.58 lb / 9.24 oz)

D7100 is 26mm wider, 45mm taller, and 43mm thicker than GR IV.

D7100 is 503 g heavier than GR IV.

Depth (front-to-back): 76mm D7100 · 33mm GR IV

Back view, to scale

Width × Height — same proportions as the front of the body.

D7100

136 × 106 mm

Credit card shown to scale as a size reference (ISO 7810, 85.6 × 54 mm)

Credit card

85.6 × 54 mm

GR IV back view

GR IV

109 × 61 mm

Top view, to scale

Width × Depth (front-to-back) — see which body is chunkier on the table.

D7100

136 × 76 mm

Credit card shown to scale as a size reference (ISO 7810, 85.6 × 54 mm)

Credit card

85.6 × 54 mm

GR IV top view

GR IV

109 × 33 mm

Sensor size, to scale

D7100

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

D7100

✓ more lenses

Nikon F

270+

native lenses available

90 first-party180 third-party

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

Use caseD7100GR IV
Portrait
6.5Good
6.5Good
Sports & Action
8.0Excellent✓ wins
1.5Limited
Video & Hybrid
6.0Good✓ wins
3.5Limited
Landscape
5.0Fair✓ wins
2.5Limited
Travel
6.5Good✓ wins
5.5Fair
Wildlife
9.0Excellent✓ wins
1.0Limited
Vlogging
5.5Fair
6.5Good✓ wins

Why pick one over the other

Reasons to choose

D7100

  • Subject recognition

    Adds Human, Animal, Bird…

  • Codecs

    Adds H.265, H.264

  • Dimensions (W×H×D mm)

    Adds 135.5, 106, 76

  • 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 D7100 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

  • Weight

    262 g vs 765 g — lower is better

  • Resolution

    25.74 MP vs 24.1 MP — higher is better

Both cameras share

  • ISO min (native)Both 100
  • Eye AFBoth support eye af
  • 4K max frame rateBoth 60 fps
  • In-body stabilization (IBIS)Both support in-body stabilization (ibis)
  • TouchscreenBoth support touchscreen
  • Wi-FiBoth support wi-fi

Pros & cons at a glance

Editorially curated highlights and trade-offs.

D7100

Pros

  • No AA filter
  • 51-point AF
  • Dual SD slots
  • Pro build for DX

Cons

  • Very dated
  • No 4K
  • DSLR declining

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 D7100 and GR IV at major authorized retailers.

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Full specifications

= category winner

D7100
GR IV
Resolution
24.1 MP
25.74 MP+7%
Sensor type
APS-C CMOS
APS-C CMOS
Sensor size
23.5 × 15.6 mm
23.3 x 15.5 mm
AA filter
No
No
D7100
GR IV
Aperture
F2.8-F16
Focal length (35mm equiv.)
28 mm
D7100
GR IV
Processor
EXPEED 7
GR ENGINE 7
D7100
GR IV
ISO min (native)
100
100
ISO max (native)
25,600
204,800+3 stops
ISO max (expanded)
102,400
204,800
D7100
GR IV
Shutter type
Mechanical + Electronic
Leaf shutter
Max mechanical speed
1/8000 sec
1/4000 sec
Max electronic speed
1/16000 sec

Frequently asked

Quick answers generated from verified specs.

Which is better for wildlife, D7100 or GR IV?

D7100 scores 9.0/10 versus 1.0/10 for GR IV — Bird AF subject recognition.

What's the resolution difference between the D7100 and GR IV?

D7100 is 24.1 MP and GR IV is 25.74 MP, so the GR IV captures more detail for cropping and large prints.

Do the D7100 and GR IV have in-body image stabilization?

D7100 has 6-stop in-body image stabilization, while GR IV has in-body image stabilization.

Which shoots faster bursts — the D7100 or the GR IV?

D7100 reaches 15 fps electronic. GR IV reaches 4 fps electronic.

What's the weight difference between the D7100 and GR IV?

D7100 weighs 765 g and GR IV weighs 262 g, so the GR IV is 503 g lighter.

Do the D7100 and GR IV record 4K video?

D7100: 4K up to 60p. GR IV: 4K up to 60p.

Are the D7100 and GR IV weather sealed?

D7100: Yes. GR IV: No.

Which has better battery life?

Rated battery life is 640 shots (CIPA) for the D7100 and 250 shots for the GR IV, giving the D7100 the edge.

How much does each cost?

D7100 launched at $1,199 and GR IV at $1,499. The D7100 is $300 less.

Can't decide between two? Compare a third camera.

Add any camera to get a three-way D7100 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.