Sony Alpha 58 Specs, Sensor Size & Crop Factor

Q: What is the crop factor of the Sony Alpha 58?

The Sony Alpha 58 has a crop factor of 1.55× relative to 35 mm full frame (diagonal 27.8 mm vs 43.3 mm).

1.55×

Crop factor

23.2×15.4 mm

Sensor size

357 mm²

Area · 41% of full frame

20.1 MP

Resolution

4.25 µm

Pixel pitch

f/6.3

Diffraction-limited aperture

2013

Release year

Specifications#

Brand: Sony
Model: Alpha 58
Also known as: SLT-A58, Sony SLT-A58
Camera type: DSLR
Released: 2013-01-01
Lens mount: Sony / Minolta A-mount
Sensor size: 23.2 × 15.4 mm (APS-C)
Crop factor: 1.55×
Resolution: 20.1 MP (5,456 × 3,632 px)
ISO range: 100 – 16,000
Continuous shooting: 8 fps
Max video resolution: 1080p
Weight: 492 g (17.4 oz)
Sensor: Sony Exmor APS HD CMOS
Sensor type: CMOS
AF points / area: 15 (3 cross-type), -1-18 EV (@ ISO 100 Equiv.)
Metering: 1200-zone Evaluative, on sensor
Exposure modes: Auto, Scene Selection, Program, Shutter/Aperture Priority, Manual
Shutter: Mechanical
Flash: ADI / Pre-TTL, GN 10m/33' @ ISO 100
Battery: NP-FM500H
Dimensions: 128.6 mm x 95.5 mm x 77.7mm
Lens: Interchangeable
Predecessor: Sony Alpha 57
Launch price: US$600 / £450 (SAL18-55II kit), £600 (Twin Lens Kit - 18-55II & 55-200 SAM)
Video: 1920x1080 (25p/50i) 24/17Mbps (PAL), 24p/60i (NTSC), AVCHD. 1440x1080 (30p/25p), 12Mbps 640x480, 25p (VGA)

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

Sensor size compared#

The Sony Alpha 58 sensor (highlighted) drawn to scale against common formats. Its area is 41% of a full-frame sensor, which collects about 1.3 stops less total light at the same exposure.

Focal length equivalents & field of view#

Multiply any focal length by 1.55 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
8 mm	12 mm	110.8°	87.8°	120.2°
10 mm	16 mm	98.5°	75.2°	108.6°
12 mm	19 mm	88.1°	65.4°	98.5°
14 mm	22 mm	79.3°	57.6°	89.7°
16 mm	25 mm	71.9°	51.4°	82.1°
18 mm	28 mm	65.6°	46.3°	75.4°
20 mm	31 mm	60.2°	42.1°	69.7°
24 mm	37 mm	51.6°	35.6°	60.2°
28 mm	44 mm	45.0°	30.8°	52.9°
35 mm	54 mm	36.7°	24.8°	43.4°
40 mm	62 mm	32.3°	21.8°	38.4°
50 mm	78 mm	26.1°	17.5°	31.1°
56 mm	87 mm	23.4°	15.7°	27.9°
70 mm	109 mm	18.8°	12.6°	22.5°
85 mm	132 mm	15.5°	10.4°	18.6°
100 mm	155 mm	13.2°	8.8°	15.9°
135 mm	210 mm	9.8°	6.5°	11.8°
200 mm	311 mm	6.6°	4.4°	8.0°
300 mm	466 mm	4.4°	2.9°	5.3°
400 mm	622 mm	3.3°	2.2°	4.0°
600 mm	932 mm	2.2°	1.5°	2.7°
800 mm	1243 mm	1.7°	1.1°	2.0°

Depth of field table#

Total depth of field at each subject distance, using a circle of confusion of 19.3 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
14 mm	f/1.8	8.7 cm	36.1 cm	1.61 m	4.41 m	40.5 m	∞	5.65 m
14 mm	f/2.8	13.7 cm	58.7 cm	3.13 m	15.4 m	∞	∞	3.64 m
14 mm	f/4	19.9 cm	91.5 cm	8.08 m	∞	∞	∞	2.55 m
14 mm	f/8	44.9 cm	3.92 m	∞	∞	∞	∞	1.28 m
28 mm	f/1.8	2.1 cm	8.6 cm	35.2 cm	80.4 cm	2.32 m	11.0 m	22.6 m
28 mm	f/2.8	3.3 cm	13.5 cm	55.4 cm	1.28 m	3.89 m	26.1 m	14.5 m
28 mm	f/4	4.7 cm	19.3 cm	80.8 cm	1.92 m	6.44 m	561 m	10.2 m
28 mm	f/8	9.4 cm	39.8 cm	1.83 m	5.35 m	242 m	∞	5.10 m
48 mm	f/1.8	0.7 cm	2.9 cm	11.8 cm	26.8 cm	75.1 cm	3.07 m	66.3 m
48 mm	f/2.8	1.1 cm	4.5 cm	18.4 cm	41.8 cm	1.18 m	4.94 m	42.7 m
48 mm	f/4	1.5 cm	6.4 cm	26.3 cm	60.0 cm	1.71 m	7.51 m	29.9 m
48 mm	f/8	3.0 cm	12.8 cm	53.3 cm	1.24 m	3.73 m	24.0 m	15.0 m
78 mm	f/1.8	0.2 cm	1.1 cm	4.4 cm	10.0 cm	28.1 cm	1.14 m	175 m
78 mm	f/2.8	0.4 cm	1.6 cm	6.8 cm	15.6 cm	43.8 cm	1.78 m	113 m
78 mm	f/4	0.5 cm	2.3 cm	9.8 cm	22.3 cm	62.7 cm	2.56 m	78.9 m
78 mm	f/8	1.1 cm	4.7 cm	19.6 cm	44.8 cm	1.27 m	5.38 m	39.5 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 28 mm
f/1.2	f/1.9	33.9 m
f/1.4	f/2.2	29.0 m
f/1.8	f/2.8	22.6 m
f/2	f/3.1	20.3 m
f/2.8	f/4.4	14.5 m
f/4	f/6.2	10.2 m
f/5.6	f/8.7	7.28 m
f/8	f/12.4	5.10 m

Diffraction & pixel pitch#

With 4.25 µm pixels, diffraction starts to soften pixel-level detail around f/6.3. For maximum sharpness keep landscapes between f/3.5 and f/6; stopping down further trades detail for depth of field.

Aperture	Airy disk diameter	Spread over	At 100% view
f/2.8	3.8 µm	0.9 px	sharp
f/4	5.4 µm	1.3 px	sharp
f/5.6	7.5 µm	1.8 px	sharp
f/8	10.7 µm	2.5 px	slight softening
f/11	14.8 µm	3.5 px	visibly soft
f/16	21.5 µm	5.0 px	visibly soft
f/22	29.5 µm	6.9 px	visibly soft

Maximum print sizes#

At 20.1 MP the Sony Alpha 58 produces 5,456 × 3,632 pixel images. See the 20 megapixel guide or the print size calculator.

Resolution	Typical use	Inches	Centimetres
300 DPI	Photo-lab quality	18.2 × 12.1 in	46 × 31 cm
240 DPI	Fine-art inkjet	22.7 × 15.1 in	58 × 38 cm
200 DPI	Wall print	27.3 × 18.2 in	69 × 46 cm
150 DPI	Poster, viewed from 1 m+	36.4 × 24.2 in	92 × 62 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
9 mm (14 mm eq.)	35.8 s	21.2 s	25.1 s	29.7 s
13 mm (20 mm eq.)	24.8 s	14.7 s	17.4 s	20.6 s
15 mm (23 mm eq.)	21.5 s	12.7 s	15.0 s	17.8 s
23 mm (36 mm eq.)	14.0 s	8.3 s	9.8 s	11.6 s
32 mm (50 mm eq.)	10.1 s	6.0 s	7.0 s	8.4 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
15 mm	1/25 s	0.3 s	1.3 s
32 mm	1/50 s	1/6 s	0.6 s
64 mm	1/100 s	1/13 s	0.3 s
129 mm	1/200 s	1/25 s	1/6 s

Lenses for the Sony Alpha 58#

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 APS-C cameras from around the same time.

Frequently asked questions#

What is the crop factor of the Sony Alpha 58?

The Sony Alpha 58 has a crop factor of 1.55× relative to 35 mm full frame (diagonal 27.8 mm vs 43.3 mm).

What size is the Sony Alpha 58 sensor?

23.2 × 15.4 mm (APS-C), an area of 357 mm² — 41% of full frame.

Is the Sony Alpha 58 full frame?

No — its sensor is APS-C, which is 2.4× smaller in area than full frame.

How many megapixels does the Sony Alpha 58 have?

20.1 megapixels (5,456 × 3,632 pixels), enough for a 18 × 12 inch print at 300 DPI.

What lens mount does the Sony Alpha 58 use?

The Sony Alpha 58 uses the Sony / Minolta A-mount (flange distance 44.50 mm).

How long can I expose the night sky with the Sony Alpha 58?

With a 13 mm lens (20 mm equivalent) the 500 rule gives 25 s and the stricter NPF rule at f/2.8 gives 17 s.

Sources & licences#

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