Sony α99 II Specs, Sensor Size & Crop Factor

Q: What is the crop factor of the Sony α99 II?

The Sony α99 II has a crop factor of 1.01× relative to 35 mm full frame (diagonal 43.0 mm vs 43.3 mm).

1.01×

Crop factor

35.8×23.9 mm

Sensor size

856 mm²

Area · 99% of full frame

42.4 MP

Resolution

4.50 µm

Pixel pitch

f/6.7

Diffraction-limited aperture

Specifications#

Brand: Sony
Model: α99 II
Also known as: ILCA-99M2
Camera type: DSLR
Lens mount: Sony / Minolta A-mount
Sensor size: 35.8 × 23.9 mm (Full frame (35 mm))
Crop factor: 1.01×
Resolution: 42.4 MP (7,952 × 5,304 px)
Fastest shutter: 1/8,000 s
Continuous shooting: 12 fps
Weight: 849 g (29.9 oz)
Sensor: Exmor R
Sensor type: BSI-CMOS
Viewfinder: 0.5″ 2.36M-dot OLED Tru-finder
Battery: NP-FM500H lithium-ion battery
Dimensions: 143 x 104 x 76 mm (5.63 x 4.09 x 2.99″)
Launch price: US$3199 MSRP (Sep 2016)

Specifications merged from Wikipedia, Wikidata and Lensfun. Spot an error? Tell us.

Sensor size compared#

The Sony α99 II sensor (highlighted) drawn to scale against common formats. Its area is 99% of a full-frame sensor.

Focal length equivalents & field of view#

Multiply any focal length by 1.01 to get the full-frame field of view. Angles are for a rectilinear lens focused at infinity.

Lens on this camera	Full-frame equivalent	Horizontal	Vertical	Diagonal
10 mm	10 mm	121.6°	100.2°	130.2°
12 mm	12 mm	112.3°	89.8°	121.7°
14 mm	14 mm	103.9°	81.0°	113.9°
16 mm	16 mm	96.4°	73.5°	106.7°
18 mm	18 mm	89.7°	67.2°	100.2°
20 mm	20 mm	83.7°	61.7°	94.2°
24 mm	24 mm	73.4°	52.9°	83.8°
28 mm	28 mm	65.2°	46.2°	75.1°
35 mm	35 mm	54.2°	37.7°	63.2°
40 mm	40 mm	48.2°	33.3°	56.6°
50 mm	50 mm	39.4°	26.9°	46.6°
56 mm	56 mm	35.5°	24.1°	42.0°
70 mm	70 mm	28.7°	19.4°	34.2°
85 mm	85 mm	23.8°	16.0°	28.4°
100 mm	101 mm	20.3°	13.6°	24.3°
135 mm	136 mm	15.1°	10.1°	18.1°
200 mm	201 mm	10.2°	6.8°	12.3°
300 mm	302 mm	6.8°	4.6°	8.2°
400 mm	402 mm	5.1°	3.4°	6.2°
600 mm	603 mm	3.4°	2.3°	4.1°
800 mm	804 mm	2.6°	1.7°	3.1°

Depth of field table#

Total depth of field at each subject distance, using a circle of confusion of 29.8 µm (the 0.030 mm full-frame standard scaled by the crop factor). Detailed tables: 24 mm f/1.8, 24 mm f/2.8, 35 mm f/1.8, 35 mm f/2.8, 50 mm f/1.8, 50 mm f/2.8.

Focal	Aperture	50.0 cm	1.00 m	2.00 m	3.00 m	5.00 m	10.0 m	Hyperfocal
22 mm	f/1.8	5.3 cm	22.0 cm	92.3 cm	2.23 m	7.95 m	∞	9.03 m
22 mm	f/2.8	8.3 cm	34.8 cm	1.55 m	4.19 m	32.9 m	∞	5.81 m
22 mm	f/4	12.0 cm	51.2 cm	2.56 m	9.57 m	∞	∞	4.08 m
22 mm	f/8	25.0 cm	1.26 m	81.6 m	∞	∞	∞	2.05 m
43 mm	f/1.8	1.3 cm	5.6 cm	22.8 cm	51.9 cm	1.47 m	6.31 m	34.5 m
43 mm	f/2.8	2.1 cm	8.7 cm	35.7 cm	81.6 cm	2.36 m	11.3 m	22.2 m
43 mm	f/4	3.0 cm	12.4 cm	51.4 cm	1.19 m	3.57 m	21.9 m	15.5 m
43 mm	f/8	5.9 cm	25.1 cm	1.08 m	2.68 m	10.8 m	∞	7.79 m
73 mm	f/1.8	0.4 cm	1.9 cm	7.8 cm	17.7 cm	49.8 cm	2.02 m	99.3 m
73 mm	f/2.8	0.7 cm	2.9 cm	12.1 cm	27.6 cm	77.7 cm	3.19 m	63.8 m
73 mm	f/4	1.0 cm	4.2 cm	17.3 cm	39.5 cm	1.12 m	4.68 m	44.7 m
73 mm	f/8	1.9 cm	8.3 cm	34.8 cm	80.1 cm	2.32 m	11.1 m	22.4 m
120 mm	f/1.8	0.1 cm	0.7 cm	2.8 cm	6.4 cm	18.2 cm	73.8 cm	268 m
120 mm	f/2.8	0.2 cm	1.0 cm	4.4 cm	10.0 cm	28.3 cm	1.15 m	172 m
120 mm	f/4	0.3 cm	1.5 cm	6.2 cm	14.3 cm	40.5 cm	1.65 m	121 m
120 mm	f/8	0.6 cm	2.9 cm	12.5 cm	28.7 cm	81.4 cm	3.37 m	60.4 m

Equivalent aperture#

Exposure is identical at the same f-number on any format; equivalence only describes depth of field and total light.

Aperture on this camera	Full-frame equivalent (depth of field)	Hyperfocal at 43 mm
f/1.2	f/1.2	51.7 m
f/1.4	f/1.4	44.3 m
f/1.8	f/1.8	34.5 m
f/2	f/2.0	31.0 m
f/2.8	f/2.8	22.2 m
f/4	f/4.0	15.5 m
f/5.6	f/5.6	11.1 m
f/8	f/8.0	7.79 m

Diffraction & pixel pitch#

With 4.50 µm pixels, diffraction starts to soften pixel-level detail around f/6.7. For maximum sharpness keep landscapes between f/3.7 and f/7; stopping down further trades detail for depth of field.

Aperture	Airy disk diameter	Spread over	At 100% view
f/2.8	3.8 µm	0.8 px	sharp
f/4	5.4 µm	1.2 px	sharp
f/5.6	7.5 µm	1.7 px	sharp
f/8	10.7 µm	2.4 px	slight softening
f/11	14.8 µm	3.3 px	visibly soft
f/16	21.5 µm	4.8 px	visibly soft
f/22	29.5 µm	6.6 px	visibly soft

Maximum print sizes#

At 42.4 MP the Sony α99 II produces 7,952 × 5,304 pixel images. See the 42 megapixel guide or the print size calculator.

Resolution	Typical use	Inches	Centimetres
300 DPI	Photo-lab quality	26.5 × 17.7 in	67 × 45 cm
240 DPI	Fine-art inkjet	33.1 × 22.1 in	84 × 56 cm
200 DPI	Wall print	39.8 × 26.5 in	101 × 67 cm
150 DPI	Poster, viewed from 1 m+	53.0 × 35.4 in	135 × 90 cm

Night-sky exposure limits#

Longest exposure before stars trail. The NPF rule accounts for pixel pitch and is stricter than the classic 500 rule — use it for pin-sharp stars on high-resolution sensors.

Focal length	500 rule	NPF f/1.8	NPF f/2.8	NPF f/4
14 mm (14 mm eq.)	35.5 s	14.1 s	16.6 s	19.6 s
20 mm (20 mm eq.)	24.9 s	9.9 s	11.7 s	13.8 s
24 mm (24 mm eq.)	20.7 s	8.3 s	9.7 s	11.5 s
35 mm (35 mm eq.)	14.2 s	5.7 s	6.7 s	7.9 s
50 mm (50 mm eq.)	9.9 s	4.0 s	4.7 s	5.5 s

Open the NPF / 500 rule calculator →

Handheld shutter speed guide#

The reciprocal rule uses the equivalent focal length. High-resolution sensors may need one stop faster than this for pixel-sharp results.

Focal length	No stabilisation (1/equiv. focal)	With 3-stop IS	With 5-stop IBIS
24 mm	1/25 s	0.3 s	1.3 s
50 mm	1/50 s	1/6 s	0.6 s
99 mm	1/100 s	1/13 s	0.3 s
199 mm	1/200 s	1/25 s	1/6 s

Lenses for the Sony α99 II#

Native Sony / Minolta A-mount lenses in our database (129 total). Also adaptable: T-mount (T2), M42 screw mount, Deckel (DKL), Tamron Adaptall, M39 / LTM (Leica thread).

Samyang 8mm f/3.5 Fish-Eye CS 8 mm
Samyang 10mm f/2.8 ED AS NCS CS 10 mm
Laowa 12mm f/2.8 Zero-D 12 mm
Samyang 14mm f/2.8 AE ED AS IF UMC 14 mm
Laowa 15mm F/4 Wide Angle Macro 15 mm
Samyang 16mm f/2.0 ED AS UMC CS 16 mm
Samyang 20mm f/1.8 ED AS UMC 20 mm
Samyang 24mm f/1.4 ED AS IF UMC 24 mm
Samyang T-S 24mm f/3.5 ED AS UMC 24 mm
Laowa 60mm f/2.8 2X Ultra-Macro 60 mm
Samyang 85mm f/1.4 IF UMC Aspherical 85 mm
Samyang 135mm f/2 ED UMC 135 mm
Sigma 4.5mm f/2.8 EX DC HSM circular fisheye 4.5 mm
Sigma 8-16mm f/4.5-5.6 DC HSM 8–16 mm
Sigma 10-20mm f/3.5 EX DC HSM 10–20 mm
Sigma 10-20mm f/4-5.6 EX DC 10–20 mm
Sigma 10mm f/2.8 EX DC Fisheye HSM 10 mm
Tamron SP AF 10-24mm f/3.5-4.5 Di II LD Aspherical (IF) 10–24 mm
Tamron SP AF 11-18mm f/4.5-5.6 Di-II LD Aspherical (IF) 11–18 mm
Tokina AF 11-16mm f/2.8 AT-X Pro DX 11–16 mm
Tokina AT-X 116 PRO DX II (11-16mm f/2.8) 11–16 mm
Sigma 12-24mm F4.5-5.6 II DG HSM 12–24 mm
Sigma 14mm f/2.8 EX 14 mm
Sigma 14mm f/2.8 EX Aspherical HSM 14 mm
Sigma 14mm f/3.5 EX 14 mm
Sigma 15-30mm f/3.5-4.5 EX DG Aspherical 15–30 mm
Sigma 15mm f/2.8 EX DG Diagonal Fisheye 15 mm
Tamron SP 15-30mm f/2.8 Di VC USD 15–30 mm
Sony AF DT 16-105mm f/3.5-5.6 16–105 mm
Sony DT 16-50mm f/2.8 SSM 16–50 mm
Sony Zeiss Vario-Sonnar T* 16-35mm f/2.8 ZA SSM II 16–35 mm
Tamron 16-300mm f/3.5-6.3 Di II VC PZD Macro B016 16–300 mm
Sigma 17-35mm F2.8-4 EX DG Aspherical HSM 17–35 mm
Sigma 17-35mm f/2.8-4 EX DG 17–35 mm
Sigma 17-50mm f/2.8 EX DC OS HSM 17–50 mm
Sigma 17-70mm f/2.8-4 DC Macro OS HSM | Contemporary 013 17–70 mm

Similar cameras#

Other Full frame (35 mm) cameras from around the same time.

Frequently asked questions#

What is the crop factor of the Sony α99 II?

The Sony α99 II has a crop factor of 1.01× relative to 35 mm full frame (diagonal 43.0 mm vs 43.3 mm).

What size is the Sony α99 II sensor?

35.8 × 23.9 mm (Full frame (35 mm)), an area of 856 mm² — 99% of full frame.

Is the Sony α99 II full frame?

Yes — its sensor is the same 36 × 24 mm size as 35 mm film.

How many megapixels does the Sony α99 II have?

42.4 megapixels (7,952 × 5,304 pixels), enough for a 27 × 18 inch print at 300 DPI.

What lens mount does the Sony α99 II use?

The Sony α99 II uses the Sony / Minolta A-mount (flange distance 44.50 mm).

How long can I expose the night sky with the Sony α99 II?

With a 20 mm lens (20 mm equivalent) the 500 rule gives 25 s and the stricter NPF rule at f/2.8 gives 12 s.

Sources & licences#

Wikipedia: Sony %CE%B199 II — CC BY-SA 4.0
Wikidata Q28127163 — CC0
Lensfun camera database — CC BY-SA 3.0

Last updated October 03, 2026 · How we calculate · Sources