DSLR · 2011

Sony Alpha 65

The Sony Alpha 65 is a DSLR from 2011 with a APS-C sensor measuring 23.5 × 15.6 mm and 24.3 megapixels. Its crop factor is 1.53×, so a 50 mm lens frames like 77 mm on full frame. Every number below is calculated for this exact sensor.

APS-C1.53× crop24.3 MPSony / Minolta A-mount
Sony Alpha 65 camera
Photo: Dudhhr, CC BY-SA 4.0, via Wikimedia Commons
1.53×
Crop factor
23.5×15.6 mm
Sensor size
367 mm²
Area · 42% of full frame
24.3 MP
Resolution
3.88 µm
Pixel pitch
f/5.8
Diffraction-limited aperture
2011
Release year

Specifications#

Brand
Sony
Model
Alpha 65
Also known as
SLT-A65V, Sony SLT-A65V
Camera type
DSLR
Released
2011-01-01
Sensor size
23.5 × 15.6 mm (APS-C)
Crop factor
1.53×
Resolution
24.3 MP (6,050 × 4,016 px)
ISO range
100 – 16,000
Continuous shooting
8 fps
Weight
543 g (19.2 oz)
Sensor
Exmor APS HD CMOS sensor (23.5 x 15.6mm)
Storage
Memory Stick PRO Duo/Pro-HG Duo/PRO-HG HX Duo media - SD, SDHC and SDXC memory card
Viewfinder
.5in (13mm) TruFinder XGA OLED Electronic View Finder with 2,359,296 dots
AF points / area
Wide (auto, 15 points), zone, spot, local selectable
Metering
Advanced 1200-zone evaluative metering, multi segment, center weighted, spot
Exposure modes
Standard, vivid, portrait, landscape, sunset, black and white, (A) aperture priority, (P) program mode, (S) shutter priority, (M) manual mode
Shutter
Electronically-controlled, vertical-traverse, focal-plane shutter, wireless
Flash
Built-in, pop-up auto, auto, fill-flash, slow Sync., rear Sync., red-eye reduction (on/off selectable for autoflash and fill-flash mode), wireless, off, ADI flash, pre-flash TTL, manual flash
Battery
InfoLITHIUM NP-FM500H
Dimensions
Width: 132.1mm Height: 97.5mm Depth: 80.7mm
Lens
Interchangeable, Sony A-mount
Drive
24.3Mpx burst mode continuous shooting, Hi: 8fps and Lo: 3fps

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

Sensor size compared#

Medium format 44 × 33 mmFull frame (35 mm)Sony Alpha 65Four Thirds / Micro Four Thirds1" (one-inch) sensor
The Sony Alpha 65 sensor (highlighted) drawn to scale against common formats. Its area is 42% of a full-frame sensor, which collects about 1.2 stops less total light at the same exposure.

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 cameraFull-frame equivalentHorizontalVerticalDiagonal
8 mm12 mm111.5°88.5°120.9°
10 mm15 mm99.2°75.9°109.3°
12 mm18 mm88.8°66.0°99.2°
14 mm21 mm80.0°58.2°90.4°
16 mm25 mm72.6°52.0°82.8°
18 mm28 mm66.3°46.9°76.2°
20 mm31 mm60.9°42.6°70.4°
24 mm37 mm52.2°36.0°60.9°
28 mm43 mm45.5°31.1°53.5°
35 mm54 mm37.1°25.1°43.9°
40 mm61 mm32.7°22.1°38.8°
50 mm77 mm26.4°17.7°31.5°
56 mm86 mm23.7°15.9°28.3°
70 mm107 mm19.1°12.7°22.8°
85 mm130 mm15.7°10.5°18.8°
100 mm153 mm13.4°8.9°16.1°
135 mm207 mm9.9°6.6°11.9°
200 mm307 mm6.7°4.5°8.1°
300 mm460 mm4.5°3.0°5.4°
400 mm614 mm3.4°2.2°4.0°
600 mm920 mm2.2°1.5°2.7°
800 mm1227 mm1.7°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.

FocalAperture50.0 cm1.00 m2.00 m3.00 m5.00 m10.0 mHyperfocal
14 mmf/1.88.8 cm36.6 cm1.63 m4.52 m45.2 m∞5.58 m
14 mmf/2.813.8 cm59.6 cm3.21 m16.5 m∞∞3.59 m
14 mmf/420.2 cm93.1 cm8.53 m∞∞∞2.52 m
14 mmf/845.7 cm4.14 m∞∞∞∞1.27 m
28 mmf/1.82.1 cm8.7 cm35.7 cm81.5 cm2.35 m11.2 m22.3 m
28 mmf/2.83.3 cm13.6 cm56.2 cm1.30 m3.95 m27.1 m14.3 m
28 mmf/44.7 cm19.6 cm81.9 cm1.95 m6.58 m2.0 km10.0 m
28 mmf/89.5 cm40.3 cm1.86 m5.49 m643 m∞5.04 m
48 mmf/1.80.7 cm2.9 cm11.9 cm27.1 cm76.1 cm3.11 m65.5 m
48 mmf/2.81.1 cm4.5 cm18.6 cm42.3 cm1.19 m5.01 m42.1 m
48 mmf/41.5 cm6.5 cm26.6 cm60.8 cm1.73 m7.63 m29.5 m
48 mmf/83.1 cm13.0 cm54.0 cm1.25 m3.79 m24.9 m14.8 m
78 mmf/1.80.2 cm1.1 cm4.4 cm10.1 cm28.5 cm1.15 m173 m
78 mmf/2.80.4 cm1.7 cm6.9 cm15.8 cm44.4 cm1.80 m111 m
78 mmf/40.5 cm2.4 cm9.9 cm22.6 cm63.5 cm2.59 m77.8 m
78 mmf/81.1 cm4.7 cm19.8 cm45.3 cm1.29 m5.46 m39.0 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 cameraFull-frame equivalent (depth of field)Hyperfocal at 28 mm
f/1.2f/1.833.4 m
f/1.4f/2.128.7 m
f/1.8f/2.822.3 m
f/2f/3.120.1 m
f/2.8f/4.314.3 m
f/4f/6.110.0 m
f/5.6f/8.67.19 m
f/8f/12.35.04 m

Diffraction & pixel pitch#

With 3.88 µm pixels, diffraction starts to soften pixel-level detail around f/5.8. For maximum sharpness keep landscapes between f/3.2 and f/6; stopping down further trades detail for depth of field.

ApertureAiry disk diameterSpread overAt 100% view
f/2.83.8 µm1.0 pxsharp
f/45.4 µm1.4 pxsharp
f/5.67.5 µm1.9 pxsharp
f/810.7 µm2.8 pxslight softening
f/1114.8 µm3.8 pxvisibly soft
f/1621.5 µm5.5 pxvisibly soft
f/2229.5 µm7.6 pxvisibly soft

Maximum print sizes#

At 24.3 MP the Sony Alpha 65 produces 6,050 × 4,016 pixel images. See the 24 megapixel guide or the print size calculator.

ResolutionTypical useInchesCentimetres
300 DPIPhoto-lab quality20.2 × 13.4 in51 × 34 cm
240 DPIFine-art inkjet25.2 × 16.7 in64 × 43 cm
200 DPIWall print30.2 × 20.1 in77 × 51 cm
150 DPIPoster, viewed from 1 m+40.3 × 26.8 in102 × 68 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 length500 ruleNPF f/1.8NPF f/2.8NPF f/4
9 mm (14 mm eq.)36.2 s19.9 s23.8 s28.5 s
13 mm (20 mm eq.)25.1 s13.8 s16.5 s19.7 s
16 mm (25 mm eq.)20.4 s11.2 s13.4 s16.0 s
23 mm (35 mm eq.)14.2 s7.8 s9.3 s11.2 s
33 mm (51 mm eq.)9.9 s5.4 s6.5 s7.8 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 lengthNo stabilisation (1/equiv. focal)With 3-stop ISWith 5-stop IBIS
16 mm1/25 s0.3 s1.3 s
33 mm1/50 s1/6 s0.6 s
65 mm1/100 s1/13 s0.3 s
130 mm1/200 s1/25 s1/6 s

Frequently asked questions#

What is the crop factor of the Sony Alpha 65?

The Sony Alpha 65 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 65 sensor?

23.5 × 15.6 mm (APS-C), an area of 367 mm² — 42% of full frame.

Is the Sony Alpha 65 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 65 have?

24.3 megapixels (6,050 × 4,016 pixels), enough for a 20 × 13 inch print at 300 DPI.

What lens mount does the Sony Alpha 65 use?

The Sony Alpha 65 uses the Sony / Minolta A-mount (flange distance 44.50 mm).

How long can I expose the night sky with the Sony Alpha 65?

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