Leica
Q3
Full-frame fixed 28mm f/1.7 premium compact for documentary and travel.
$5,995
Released May 2023
Sigma
fp L
World's smallest full-frame interchangeable camera with 61MP and L-mount.
$2,499
Released Jul 2021
Q3 is 1.9 years newer.
Wins
Q3
Wins
fp L
3 categories tied
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 lower ISO min (native) (50 vs 100)
- Bfp L has higher Card slots (2 vs 1)
- Bfp L has higher Battery life (CIPA) (640 shots vs 350 shots)
Key specs at a glance
Size and weight, to scale
Q3
130 × 80 × 92 mm
743 g (1.64 lb / 26.21 oz)
fp L
138 × 98 × 88 mm
720 g (1.59 lb / 25.40 oz)
Q3 is 8mm narrower and 18mm shorter than fp L but it is also 4mm thicker.
Q3 is 23 g heavier than fp L.
Depth (front-to-back): 92mm Q3 · 88mm fp L
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
ISO max (native)
100,000 vs 25,600 — higher is better
EVF resolution
5,760,000 vs 2,360,000 — higher is better
ISO min (native)
50 vs 100 — lower is better
Subject recognition
Adds Face, Eye
Codecs
Adds ProRes
EVF magnification
0.79 × vs 0.78 × — higher is better
Reasons to choose
fp L
Dimensions (W×H×D mm)
Adds 138, 98, 88
AA filter
Only fp L supports it
Subject recognition
Adds Bird, Vehicle
Pre-Capture / Pre-Release
Only fp L supports it
In-body stabilization
Only fp L supports it
Card slots
2 vs 1 — higher is better
Microphone jack (3.5mm)
Only fp L supports it
Headphone 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
- ✓Burst (electronic) — Both 15 fps
- ✓4K max frame rate — Both 60 fps
- ✓Max video bit rate — Both 150 Mbps
- ✓Weather sealing — Both support weather sealing
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
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.
Do the Q3 and fp L have in-body image stabilization?
Q3 does not have IBIS, while fp L has 6-stop in-body image stabilization.
Which shoots faster bursts — the Q3 or the fp L?
Q3 reaches 15 fps electronic. fp L reaches 15 fps electronic.
What's the weight difference between the Q3 and fp L?
Q3 weighs 743 g and fp L weighs 720 g, so the fp L is 23 g lighter.
Do the Q3 and fp L record 4K video?
Q3: 8K (max), 4K up to 60p. fp L: 4K up to 60p.
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 640 shots for the fp L, giving the fp L 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.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.