Specifications#
- Brand
- Sony
- Model
- Alpha 6400A
- Also known as
- ILCE-6400A
- Camera type
- Mirrorless
- Lens mount
- Sony E-mount
- Sensor size
- 23.5 × 15.7 mm (APS-C)
- Crop factor
- 1.53×
Specifications merged from Lensfun. Spot an error? Tell us.
Sensor size compared#
Focal length equivalents & field of view#
Multiply any focal length by 1.53 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 | 111.4° | 88.7° | 120.9° |
| 10 mm | 15 mm | 99.1° | 76.1° | 109.3° |
| 12 mm | 18 mm | 88.7° | 66.2° | 99.2° |
| 14 mm | 21 mm | 79.9° | 58.4° | 90.4° |
| 16 mm | 25 mm | 72.5° | 52.1° | 82.8° |
| 18 mm | 28 mm | 66.2° | 47.0° | 76.2° |
| 20 mm | 31 mm | 60.8° | 42.7° | 70.4° |
| 24 mm | 37 mm | 52.1° | 36.1° | 60.9° |
| 28 mm | 43 mm | 45.5° | 31.2° | 53.5° |
| 35 mm | 54 mm | 37.1° | 25.2° | 43.9° |
| 40 mm | 61 mm | 32.7° | 22.1° | 38.8° |
| 50 mm | 77 mm | 26.4° | 17.8° | 31.5° |
| 56 mm | 86 mm | 23.7° | 15.9° | 28.3° |
| 70 mm | 107 mm | 19.0° | 12.8° | 22.8° |
| 85 mm | 130 mm | 15.7° | 10.5° | 18.8° |
| 100 mm | 153 mm | 13.4° | 8.9° | 16.1° |
| 135 mm | 207 mm | 9.9° | 6.6° | 11.9° |
| 200 mm | 307 mm | 6.7° | 4.5° | 8.1° |
| 300 mm | 460 mm | 4.5° | 3.0° | 5.4° |
| 400 mm | 614 mm | 3.4° | 2.2° | 4.0° |
| 600 mm | 920 mm | 2.2° | 1.5° | 2.7° |
| 800 mm | 1227 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 19.6 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 | 8.8 cm | 36.6 cm | 1.64 m | 4.52 m | 45.3 m | ∞ | 5.58 m |
| 14 mm | f/2.8 | 13.8 cm | 59.6 cm | 3.21 m | 16.5 m | ∞ | ∞ | 3.59 m |
| 14 mm | f/4 | 20.2 cm | 93.1 cm | 8.54 m | ∞ | ∞ | ∞ | 2.52 m |
| 14 mm | f/8 | 45.7 cm | 4.14 m | ∞ | ∞ | ∞ | ∞ | 1.27 m |
| 28 mm | f/1.8 | 2.1 cm | 8.7 cm | 35.7 cm | 81.5 cm | 2.35 m | 11.2 m | 22.3 m |
| 28 mm | f/2.8 | 3.3 cm | 13.6 cm | 56.2 cm | 1.30 m | 3.95 m | 27.1 m | 14.3 m |
| 28 mm | f/4 | 4.7 cm | 19.6 cm | 81.9 cm | 1.95 m | 6.58 m | 2.1 km | 10.0 m |
| 28 mm | f/8 | 9.5 cm | 40.3 cm | 1.86 m | 5.49 m | 651 m | ∞ | 5.04 m |
| 48 mm | f/1.8 | 0.7 cm | 2.9 cm | 11.9 cm | 27.1 cm | 76.1 cm | 3.11 m | 65.5 m |
| 48 mm | f/2.8 | 1.1 cm | 4.5 cm | 18.6 cm | 42.3 cm | 1.19 m | 5.01 m | 42.1 m |
| 48 mm | f/4 | 1.5 cm | 6.5 cm | 26.6 cm | 60.8 cm | 1.73 m | 7.63 m | 29.5 m |
| 48 mm | f/8 | 3.1 cm | 13.0 cm | 54.0 cm | 1.25 m | 3.79 m | 24.9 m | 14.8 m |
| 78 mm | f/1.8 | 0.2 cm | 1.1 cm | 4.4 cm | 10.1 cm | 28.5 cm | 1.15 m | 173 m |
| 78 mm | f/2.8 | 0.4 cm | 1.7 cm | 6.9 cm | 15.8 cm | 44.4 cm | 1.80 m | 111 m |
| 78 mm | f/4 | 0.5 cm | 2.4 cm | 9.9 cm | 22.6 cm | 63.6 cm | 2.59 m | 77.8 m |
| 78 mm | f/8 | 1.1 cm | 4.7 cm | 19.8 cm | 45.3 cm | 1.29 m | 5.46 m | 39.0 m |
Equivalent aperture#
Exposure is identical at the same f-number on any format; equivalence only describes depth of field and total light.
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. (NPF needs a known resolution and is omitted here.)
| Focal length | 500 rule |
|---|---|
| 9 mm (14 mm eq.) | 36.2 s |
| 13 mm (20 mm eq.) | 25.1 s |
| 16 mm (25 mm eq.) | 20.4 s |
| 23 mm (35 mm eq.) | 14.2 s |
| 33 mm (51 mm eq.) | 9.9 s |
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 |
|---|---|---|---|
| 16 mm | 1/25 s | 0.3 s | 1.3 s |
| 33 mm | 1/50 s | 1/6 s | 0.6 s |
| 65 mm | 1/100 s | 1/13 s | 0.3 s |
| 130 mm | 1/200 s | 1/25 s | 1/6 s |
Lenses for the Sony Alpha 6400A#
Native Sony E-mount lenses in our database (174 total). Also adaptable: T-mount (T2), M39 / LTM (Leica thread), M42 screw mount, Deckel (DKL).
- Sony FE 12-24mm f/4 G 12–24 mm
- Sony FE 20-70mm f/4 G 20–70 mm
- Sony FE 20mm f/1.8 G 20 mm
- Sony FE 24-105mm f/4 G OSS 24–105 mm
- Sony FE 28-60mm f/4-5.6 28–60 mm
- Sony FE 28-70mm f/3.5-5.6 OSS 28–70 mm
- Sony FE 50mm f/1.2 GM 50 mm
- Sony FE 70-200mm f/2.8 GM OSS 70–200 mm
- Sony FE 70-200mm f/4 G OSS 70–200 mm
- Sony FE 70-300mm f/4.5-5.6 G OSS 70–300 mm
- Sony FE 85mm f/1.4 GM 85 mm
- Sony FE 85mm f/1.8 85 mm
- Sony FE 90mm f/2.8 Macro G OSS 90 mm
- Sony FE 200-600mm f/5.6-6.3 G OSS 200–600 mm
- Samyang 8mm f/2.8 UMC Fish-eye 8 mm
- Samyang 8mm f/3.5 Fish-Eye CS 8 mm
- Laowa 9mm f/2.8 Zero-D 9 mm
- Laowa 9mm f/5.6 FF RL 9 mm
- Viltrox AF 9mm f/2.8 Z/E/XF 9 mm
- Laowa 10mm f/2.8 Zero-D FF 10 mm
- Samyang 10mm f/2.8 ED AS NCS CS 10 mm
- Sigma 10-18mm F2.8 DC DN | Contemporary 023 10–18 mm
- Sony E 10-18mm f/4 OSS 10–18 mm
- Voigtländer Heliar-Hyper Wide 10mm F5.6 10 mm
- Sony E 11mm f/1.8 11 mm
- Tamron 11-20mm f/2.8 Di III-A RXD (B060) 11–20 mm
- Laowa 12mm f/2.8 Zero-D 12 mm
- Samyang 12mm f/2.0 NCS CS 12 mm
- Samyang 12mm f/2.8 Fish-Eye ED AS NCS 12 mm
- Samyang AF 12mm f/2.0 12 mm
- Zeiss Touit 2.8/12 12 mm
- Viltrox AF 13mm F1.4 13 mm
- Samyang 14mm f/2.8 AE ED AS IF UMC 14 mm
- Samyang AF 14mm f/2.8 14 mm
- Sigma 14-24mm F2.8 DG DN | Art 019 14–24 mm
- Sigma 14mm f/1.8 DG HSM | A 14 mm
Similar cameras#
Other APS-C cameras from around the same time.
- Nikon D40 2006
- Pentax K110D 2006
- Nikon D60 2008
- Nikon D7000 2010
- Pentax K-5 2010
- Nikon D7100 2013
- Pentax K-3 2013
- Samsung Galaxy NX 2013
- Ricoh Pentax K-3 II 2015
- Nikon D5600 2016
- Ricoh Pentax KP 2017
- Nikon Z50 2019
Frequently asked questions#
What is the crop factor of the Sony Alpha 6400A?
The Sony Alpha 6400A has a crop factor of 1.53× relative to 35 mm full frame (diagonal 28.2 mm vs 43.3 mm).
What size is the Sony Alpha 6400A sensor?
23.5 × 15.7 mm (APS-C), an area of 367 mm² — 43% of full frame.
Is the Sony Alpha 6400A full frame?
No — its sensor is APS-C, which is 2.4× smaller in area than full frame.
What lens mount does the Sony Alpha 6400A use?
The Sony Alpha 6400A uses the Sony E-mount (flange distance 18.00 mm).
How long can I expose the night sky with the Sony Alpha 6400A?
With a 13 mm lens (20 mm equivalent) the 500 rule gives 25 s.
Sources & licences#
- Lensfun camera database — CC BY-SA 3.0
Last updated October 03, 2026 · How we calculate · Sources