Leica
Q3
Full-frame fixed 28mm f/1.7 premium compact for documentary and travel.
$5,995
Launch priceReleased May 2023
Sigma
fp L
World's smallest full-frame interchangeable camera with 61MP and L-mount.
$2,499
Launch priceReleased Jul 2021
Q3 is 1.9 years newer.
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Wins
Q3
Wins
fp L
2 categories tied
Which would you choose?
TL;DR — Key differences
- AQ3 has higher ISO max (native) (100,000 vs 25,600)
- AQ3 has higher EVF resolution (5,760,000 vs 2,360,000)
- AQ3 has higher 4K max frame rate (60 fps vs 29.97 fps)
- AQ3 has lower ISO min (native) (50 vs 100)
- Bfp L has lower Weight (427 g vs 743 g)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to share
Q3
130 × 80 × 92 mm
743 g (1.64 lb / 26.21 oz)
Credit card
85.6 × 54 mm
for scale
fp L
113 × 70 × 45 mm
427 g (0.94 lb / 15.06 oz)
Q3 is 17mm wider, 10mm taller, and 47mm thicker than fp L.
Q3 is 316 g heavier than fp L.
Depth (front-to-back): 92mm Q3 · 45mm fp L
Back view, to scale
Width × Height — same proportions as the front of the body.
Q3
130 × 80 mm
Credit card
85.6 × 54 mm
fp L
113 × 70 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
Q3
130 × 92 mm
Credit card
85.6 × 54 mm
fp L
113 × 45 mm
Sensor size, to scale
Q3
36 × 24 mm · Full Frame
864 mm² area
fp L
36 × 24 mm · Full Frame
864 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
Q3
Dimensions (W×H×D mm)
Adds 130, 80, 92
Card types
Adds SD UHS-II
ISO max (native)
100,000 vs 25,600 — higher is better
Codecs
Adds H.265, ProRes
EVF resolution
5,760,000 vs 2,360,000 — higher is better
4K max frame rate
60 fps vs 29.97 fps — higher is better
ISO min (native)
50 vs 100 — lower is better
Subject recognition
Adds Face, Eye
Reasons to choose
fp L
Dimensions (W×H×D mm)
Adds 112.6, 69.9, 45.3
Card types
Adds SD, SDHC, SDXC
Codecs
Adds CinemaDNG, MOV
AA filter
Only fp L supports it
Subject recognition
Adds Bird, Vehicle
Pre-Capture / Pre-Release
Only fp L supports it
Internal RAW video
Only fp L supports it
Microphone jack (3.5mm)
Only fp L supports it
Both cameras share
- ✓Eye AF — Both support eye af
- ✓Animal / bird AF — Both support animal / bird af
- ✓Max video bit rate — Both 150 Mbps
- ✓Weather sealing — Both support weather sealing
- ✓Card slots — Both 1
- ✓Touchscreen — Both support touchscreen
Pros & cons at a glance
Editorially curated highlights and trade-offs.
Q3
Pros
- ✓60MP full-frame
- ✓Summilux 28mm lens
- ✓Built like a tank
- ✓Unique aesthetic
Cons
- –Fixed lens
- –Very expensive
- –No interchangeable system
fp L
Pros
- ✓Tiny full-frame
- ✓61MP
- ✓L-mount
- ✓Unique industrial design
Cons
- –No IBIS
- –Small battery
- –Minimal ergonomics
Decided which one is right for you?
Compare live prices for the Q3 and fp L at major authorized retailers.
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for wildlife, Q3 or fp L?
fp L scores 8.0/10 versus 5.5/10 for Q3 — Bird AF subject recognition.
What's the resolution difference between the Q3 and fp L?
Q3 is 60.3 MP and fp L is 61 MP, so the fp L captures more detail for cropping and large prints.
How does stabilization compare between the Q3 and fp L?
Q3 does not have IBIS, while fp L does not have IBIS.
Which shoots faster bursts — the Q3 or the fp L?
Q3 reaches 15 fps electronic. fp L reaches 10 fps electronic.
What's the weight difference between the Q3 and fp L?
Q3 weighs 743 g and fp L weighs 427 g, so the fp L is 316 g lighter.
Do the Q3 and fp L record 4K video?
Q3: 8K (max), 4K up to 60p. fp L: 4K up to 29.97p.
Are the Q3 and fp L weather sealed?
Q3: Yes. fp L: Yes.
Which has better battery life?
Rated battery life is 350 shots (CIPA) for the Q3 and 240 shots for the fp L, giving the Q3 the edge.
How much does each cost?
Q3 launched at $5,995 and fp L at $2,499. The fp L is $3,496 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way Q3 vs fp L vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed July 2026.
Product images courtesy of Leica and Sigma press materials.