Panasonic
Lumix FZ300
Weather-resistant bridge camera with constant f/2.8 25-600mm equivalent Leica zoom and 4K video.
$599
Launch priceReleased Jul 2015
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 10.5 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
Lumix FZ300
Wins
GR IV
4 categories tied
Which would you choose?
TL;DR — Key differences
- BGR IV has higher ISO max (native) (204,800 vs 6,400)
- ALumix FZ300 has higher Burst (electronic) (60 fps vs 4 fps)
- ALumix FZ300 has higher Burst (mechanical) (12 fps vs 4 fps)
- BGR IV has lower Weight (262 g vs 691 g)
- BGR IV has higher Resolution (25.74 MP vs 12.1 MP)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to shareLumix FZ300
132 × 92 × 117 mm
691 g (1.52 lb / 24.37 oz)
Credit card
85.6 × 54 mm
for scale
GR IV
109 × 61 × 33 mm
262 g (0.58 lb / 9.24 oz)
Lumix FZ300 is 22mm wider, 30mm taller, and 84mm thicker than GR IV.
Lumix FZ300 is 429 g heavier than GR IV.
Depth (front-to-back): 117mm Lumix FZ300 · 33mm GR IV
Back view, to scale
Width × Height — same proportions as the front of the body.
Lumix FZ300
132 × 92 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.
Lumix FZ300
132 × 117 mm
Credit card
85.6 × 54 mm
GR IV
109 × 33 mm
Sensor size, to scale
Lumix FZ300
6.17 × 4.55 mm · Compact
28 mm² area
GR IV
23.3 × 15.5 mm · APS-C
361 mm² area
12.9× larger sensor area = shallower depth of field and better low-light performance.
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
Lumix FZ300
Codecs
Adds H.264, MP4, AVCHD
Dimensions (W×H×D mm)
Adds 131.6, 91.5, 117.1
Card types
Adds SD UHS-I
Burst (electronic)
60 fps vs 4 fps — higher is better
Burst (mechanical)
12 fps vs 4 fps — higher is better
Animal / bird AF
Only Lumix FZ300 supports it
Subject recognition
Adds Human, Animal
Weather sealing
Only Lumix FZ300 supports it
Reasons to choose
GR IV
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 6,400 — higher is better
Weight
262 g vs 691 g — lower is better
Resolution
25.74 MP vs 12.1 MP — higher is better
4K max frame rate
60 fps vs 30 fps — higher is better
In-body stabilization (IBIS)
Only GR IV supports it
Both cameras share
- ✓ISO min (native) — Both 100
- ✓AF points / zones — Both 49
- ✓Eye AF — Both support eye af
- ✓1080p max frame rate — Both 60 fps
- ✓Card slots — Both 1
- ✓Touchscreen — Both support touchscreen
Pros & cons at a glance
Editorially curated highlights and trade-offs.
Lumix FZ300
Pros
- ✓Constant f/2.8 24x zoom
- ✓Weather resistant
- ✓4K video
- ✓Great reach
Cons
- –Small 1/2.3-inch sensor
- –12MP
- –Bridge-camera bulk
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 Lumix FZ300 and GR IV at major authorized retailers.
Panasonic Lumix FZ300
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, Lumix FZ300 or GR IV?
Lumix FZ300 scores 5.5/10 versus 1.0/10 for GR IV — 60fps burst captures fleeting moments.
What's the resolution difference between the Lumix FZ300 and GR IV?
Lumix FZ300 is 12.1 MP and GR IV is 25.74 MP, so the GR IV captures more detail for cropping and large prints.
Do the Lumix FZ300 and GR IV have in-body image stabilization?
Lumix FZ300 does not have IBIS, while GR IV has in-body image stabilization.
Which shoots faster bursts — the Lumix FZ300 or the GR IV?
Lumix FZ300 reaches 60 fps electronic. GR IV reaches 4 fps electronic.
What's the weight difference between the Lumix FZ300 and GR IV?
Lumix FZ300 weighs 691 g and GR IV weighs 262 g, so the GR IV is 429 g lighter.
Do the Lumix FZ300 and GR IV record 4K video?
Lumix FZ300: 4K up to 30p. GR IV: 4K up to 60p.
Are the Lumix FZ300 and GR IV weather sealed?
Lumix FZ300: Yes. GR IV: No.
Which has better battery life?
Rated battery life is 380 shots (CIPA) for the Lumix FZ300 and 250 shots for the GR IV, giving the Lumix FZ300 the edge.
How much does each cost?
Lumix FZ300 launched at $599 and GR IV at $1,499. The Lumix FZ300 is $900 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way Lumix FZ300 vs GR IV vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed July 2026.
Product images courtesy of Panasonic and Ricoh press materials.