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Alpha 1

Sony

Alpha 1

Original 50MP stacked flagship for sports and wildlife pros.

$6,499

Launch price

Released Jan 2021

vs

Sony

Alpha 99 II

42MP A-mount flagship with translucent mirror, 12fps, and 5-axis IBIS for Sony/Minolta lenses.

$3,199

Launch price

Released Nov 2016

Alpha 1 is 4.3 years newer.

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Wins

11categories

Alpha 1

Video & HybridLandscape

Wins

1categories

Alpha 99 II

WildlifePortrait

6 categories tied

Which would you choose?

TL;DR — Key differences

Alpha 1 wins 5 categories·Alpha 99 II wins 0 categories
  • AAlpha 1 has higher EVF resolution (9,437,184 vs 3,690,000)
  • AAlpha 1 has higher 4K max frame rate (120 fps vs 60 fps)
  • AAlpha 1 has higher EVF refresh rate (240 Hz vs 120 Hz)
  • AAlpha 1 has higher RAW buffer depth (200 frames vs 120 frames)
  • AAlpha 1 has higher Burst (electronic) (30 fps vs 20 fps)

Key specs at a glance

Alpha 1Alpha 99 II
Resolution50.1 MP42.4 MP
SensorFull FrameFull Frame
ISO max32,00025,600
Burst30 fps20 fps
4K120 fps60 fps
IBIS5.5-stop4.5-stop
Weight737 g849 g
Battery530 shots640 shots

Size and weight, to scale

Alpha 1 front view

Alpha 1

129 × 97 × 81 mm

737 g (1.62 lb / 26.00 oz)

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

Credit card

85.6 × 54 mm

for scale

Alpha 99 II

143 × 105 × 82 mm

849 g (1.87 lb / 29.95 oz)

Alpha 1 is 14mm narrower, 8mm shorter, and 1mm thinner than Alpha 99 II.

Alpha 1 is 112 g lighter than Alpha 99 II.

Depth (front-to-back): 81mm Alpha 1 · 82mm Alpha 99 II

Back view, to scale

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

Alpha 1 back view

Alpha 1

129 × 97 mm

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

Credit card

85.6 × 54 mm

Alpha 99 II

143 × 105 mm

Top view, to scale

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

Alpha 1 top view

Alpha 1

129 × 81 mm

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

Credit card

85.6 × 54 mm

Alpha 99 II

143 × 82 mm

Sensor size, to scale

Alpha 1

35.9 × 24 mm · Full Frame

862 mm² area

Alpha 99 II

35.9 × 24 mm · Full Frame

862 mm² area

Lens ecosystem

Native lens selection

Alpha 1

✓ more lenses

Sony E

350+

native lenses available

80 first-party270 third-party

Alpha 99 II: 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 caseAlpha 1Alpha 99 II
Portrait
8.5Excellent
8.5Excellent
Sports & Action
8.0Excellent
8.0Excellent
Video & Hybrid
9.5Excellent✓ wins
6.0Good
Landscape
9.0Excellent✓ wins
8.5Excellent
Travel
6.0Good✓ wins
5.5Fair
Wildlife
7.5Good
9.0Excellent✓ wins
Vlogging
5.5Fair
5.5Fair

Why pick one over the other

Reasons to choose

Alpha 1

  • Dimensions (W×H×D mm)

    Adds 128.9, 96.9, 80.8

  • EVF resolution

    9,437,184 vs 3,690,000 — higher is better

  • Codecs

    Adds XAVC HS, XAVC S, XAVC S-I

  • 4K max frame rate

    120 fps vs 60 fps — higher is better

  • Internal RAW video

    Only Alpha 1 supports it

  • Card types

    Adds CFexpress Type A

  • EVF refresh rate

    240 Hz vs 120 Hz — higher is better

  • RAW buffer depth

    200 frames vs 120 frames — higher is better

Reasons to choose

Alpha 99 II

  • Dimensions (W×H×D mm)

    Adds 142.6, 104.8, 81.6

  • Pre-Capture / Pre-Release

    Only Alpha 99 II supports it

  • Subject recognition

    Adds Vehicle

  • Battery life (CIPA)

    640 shots vs 530 shots — higher is better

Both cameras share

  • AA filterBoth support aa filter
  • ISO min (native)Both 100
  • AF points / zonesBoth 759
  • AF frame coverageBoth 94 %
  • Eye AFBoth support eye af
  • Animal / bird AFBoth support animal / bird af

Pros & cons at a glance

Editorially curated highlights and trade-offs.

Alpha 1

Pros

  • 50MP stacked
  • 30fps burst
  • 8K video
  • Pro AF

Cons

  • Superseded by A1 II
  • Very expensive
  • Large files

Alpha 99 II

Pros

  • 42MP A-mount
  • 5-axis IBIS
  • 12fps
  • Huge Minolta lens library

Cons

  • A-mount declining
  • Translucent mirror system
  • Large body

Decided which one is right for you?

Compare live prices for the Alpha 1 and Alpha 99 II at major authorized retailers.

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Full specifications

= category winner

Alpha 1
Alpha 99 II
Resolution
50.1 MP+18%
42.4 MP
Sensor type
Full Frame Stacked Exmor RS CMOS
Full Frame CMOS
Sensor size
35.9 × 24.0 mm
35.9 × 24.0 mm
AA filter
Yes
Yes
Alpha 1
Alpha 99 II
Processor
BIONZ XR
BIONZ XR
Alpha 1
Alpha 99 II
ISO min (native)
100
100
ISO max (native)
32,000+0.3 stops
25,600
ISO max (expanded)
102,400
102,400
Alpha 1
Alpha 99 II
Shutter type
Mechanical + Electronic
Mechanical + Electronic
Max mechanical speed
1/8000 sec
1/8000 sec
Max electronic speed
1/32000 sec
1/16000 sec

Frequently asked

Quick answers generated from verified specs.

Which is better for video, Alpha 1 or Alpha 99 II?

Alpha 1 scores 9.5/10 versus 6.0/10 for Alpha 99 II — 8K recording for future-proof footage.

What's the resolution difference between the Alpha 1 and Alpha 99 II?

Alpha 1 is 50.1 MP and Alpha 99 II is 42.4 MP, so the Alpha 1 captures more detail for cropping and large prints.

Do the Alpha 1 and Alpha 99 II have in-body image stabilization?

Alpha 1 has 5.5-stop in-body image stabilization, while Alpha 99 II has 4.5-stop in-body image stabilization.

Which shoots faster bursts — the Alpha 1 or the Alpha 99 II?

Alpha 1 reaches 30 fps electronic. Alpha 99 II reaches 20 fps electronic.

What's the weight difference between the Alpha 1 and Alpha 99 II?

Alpha 1 weighs 737 g and Alpha 99 II weighs 849 g, so the Alpha 1 is 112 g lighter.

Do the Alpha 1 and Alpha 99 II record 4K video?

Alpha 1: 8K (max), 4K up to 120p. Alpha 99 II: 4K up to 60p.

Are the Alpha 1 and Alpha 99 II weather sealed?

Alpha 1: Yes. Alpha 99 II: Yes.

Which has better battery life?

Rated battery life is 530 shots (CIPA) for the Alpha 1 and 640 shots for the Alpha 99 II, giving the Alpha 99 II the edge.

How much does each cost?

Alpha 1 launched at $6,499 and Alpha 99 II at $3,199. The Alpha 99 II is $3,300 less.

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

Add any camera to get a three-way Alpha 1 vs Alpha 99 II vs X comparison.

Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.

Product images courtesy of Sony press materials.