Sony Alpha 57

Sony α 57
Overview

Type	Digital single-lens translucent camera
Lens
Lens	interchangeable, Sony A-mount
Sensor/Medium
Sensor	23.5 mm × 15.6 mm, 16.1 effective megapixels CMOS
ASA/ISO range	Auto: 100-3200; Selectable: 100-16000; Multi Frame NR (up to ISO 25600)
Storage	Memory Stick PRO Duo™, Memory Stick PRO-HG Duo™, SD memory card, SDHC memory card, SDXC memory card
Exposure/Metering
Exposure metering	Advanced 1200-zone evaluative metering
Metering modes	Multi-segment, Center-weighted, Spot
Flash
Flash	Built-in flash, Range: approx. 3' - 15' (1 m - 5 m); Auto, Fill-flash, Slow Sync., Rear Sync., Hi-speed sync., Red-eye reduction (on/off selectable for Autoflash and fill-flash mode), Wireless;
Shutter
Shutter	electronically controlled, vertical-traverse, focal-plane Shutter
Shutter speed range	30–1/4000 sec, with Bulb, 1/160 sec X-sync
Continuous shooting	up to 12 Frames Per Second
Viewfinder
Viewfinder	0.46" SVGA Xtra Fine EVF (2174 dpi) (Electronic viewfinder) (1,440,000 pixels), Diopter Adjustment: -4.0 to +3.0 m-1, Field of View: 100%, 1.04x magnification
Image Processing
Custom WB	Auto WB, Daylight, Shade, Cloudy, Incandescent, Fluorescent (Warm white/Cool white/Day white/Daylight), Flash, C. Temp 2500 to 9900 K, C Filter G7 to M7, 15-step, Custom, AWB micro adjustment
General
Rear LCD monitor	921k pixel 3-inch TFT LCD
Battery	InfoLITHIUM® NP-FM500H (7.2 V)
Weight	Approx. 618 g (with battery & media);
Made in	Thailand

The Sony Alpha 57 (model name SLT-A57) is a Digital single-lens reflex camera that replaces the A55 in 2012. The camera features an electronic viewfinder and a translucent mirror. The main advantage of a translucent mirror is that it needn't flip up out of the way when taking a picture in order to expose the sensor, but the camera can focus and capture images simultaneously. The camera's 15-point autofocus system can be set to single, continuous or automatic and is arranged towards the centre. The 12 fps burst mode is available only in "speed priority" mode but can reach up to 5.5 fps burst rate in combination with any other settings.

Feature list

16.1-megapixel Exmor™ CMOS sensor (4912 × 3264) ^[1]
Updated BIONZ™ image processor
ISO 100 - 16,000 (25,600 with multi-image combination)
Auto ISO 100 - 3200
Pull-out three-hinge tilt/swivel 921K dot TruBlack™ LCD screen
Stereo microphone and external mic socket
Dust shake sensor cleaning
second-generation Translucent Mirror Technology™
12 fps burst mode at full 8-megapixel resolution
Tru-Finder™ XGA electronic viewfinder with 1440K dots resolution with full 100% frame coverage.
AVCHD video recording at 1920 × 1080 (50p/60p (1080p) @ 28 Mbit/s, 50i/60i (1080i) @ 24 Mbit/s, 50i/60i (1080i) @ 17 Mbit/s, 25p/24p (1080p) @ 24 Mbit/s, 25p/24p (1080p) @ 17 Mbit/s, 25p/24p (1080p)) @ 12 Mbit/s)^[2]
MPEG-4 video recording at 1440 × 1080 (approx. 25/30 fps @ 12 Mbit/s (average bit-rate),^[3] 640 x 480 (approx 25/30fps @ 3Mbit/s)
Live View with full-time Phase Detection AF
15-point autofocus sensors.
SteadyShot™ image stabilization system in body
3D Sweep Panorama™
Full tilt/swivel LCD screen
Multi-frame noise reduction
Object tracking AF

References

External links

Wikimedia Commons has media related to Sony SLT-A57.

Sony Store listing of camera

Minolta/Konica Minolta/Sony DSLR and SLT A-mount timeline

	Sensor	2004		2005				2006				2007				2008				2009				2010				2011				2012				2013				2014				2015				2016
		3	4	1	2	3	4	1	2	3	4	1	2	3	4	1	2	3	4	1	2	3	4	1	2	3	4	1	2	3	4	1	2	3	4	1	2	3	4	1	2	3	4	1	2	3	4	1	2	3	4
Professional	Full frame																		α900																α99																α99 II
																							α850
High-end	APS-C	DG-7D												α700																α77											α77 II
Midrange																														α65																		α68
Upper-entry																										α55							α57
										α100												α550				α580												α58
						DG-5D																α500				α560
																								α450
Entry-level																										α33				α35				α37
																α350					α380				α390
																α300					α330
																α200					α230				α290
Early models	Minolta 7000 with SB-70/SB-70S (1986) · Minolta 9000 with SB-90/SB-90S (1986) (Still video SLRs) Minolta MS-C1100 (1992) · Minolta RD-175 (1995)

Single-lens translucent (SLT) camera
5-axis in-body image stabilization (bold)
HD video capable (Video AF)
Dual phase-detection AF (italic)

DSLR, SLT and MILC cameras with HD video (uncompressed – 4K resolution) mode (comparison)

Canon
EOS

High-end	5D Mark II^w (2008) 7D^gw (2009) 1D Mark IV^w (2009) 1D X^gw (2012) 5D Mark III^Hgw (2012) 1D C^gw (2012) 6D^HGW (2012) 7D Mark II^THGw (2014) 5Ds/5DsR^THw (2015) 1D X Mark II^THGw (2016) 5D Mark IV^THGW (2016)

Mid-range	500D (2009) 60D^w (2010) 550D^w (2010) 600D^w (2011) 650D^gHw (2012) EOS M^Hwg (2012) 700D^gHw (2013) 70D^gHW (2013) EOS M2 (2013) 750D^gHW (2015) 760D^gHW (2015) EOS M3^HW (2015) 80D^gTHW (2016) EOS M5^THW (2016)

Entry-level	1100D^w (2011) 100D^H (2013) 1200D^gw (2014) EOS M10^HW (2015) 1300D^gW (2016)

Nikon
D / 1 series

High-end	D300S^Tgw (2009) D3S^Tgw (2009) D800/D800E^THgw (2012) D4^THgw (2012) D600^THgw (2012) D610^THgw (2013) D4S^THgw (2014) D810^THgw (2014) D750^THgW (2014) D810A^THgw (2015) D500^THgW (2016) D5^THgw (2016)

Mid-range	D90^gw (2008) D5000^Tgw (2009) D7000^Tgw (2010) D5100^THgw (2011) 1 V1^TSFgw (2011) 1 V2^SFgw (2012) D5200^THgw (2012) D7100^THgw (2013) D5300^THGW (2013) 1 V3^SFHPgW (2014) D5500^THgW (2015) D7200^THgW (2015) D5600^THgW (2016)

Entry-level	D3100^gw (2010) 1 J1^SFw (2011) D3200^gw (2012) 1 J2^SFHPw (2012) 1 S1^SFHPw (2013) 1 J3^SFHPw (2013) 1 AW1^SFHPGw (2013) D3300^Pgw (2014) 1 J4^SFHPW (2014) 1 J5^TSFHPW (2015) D3400^gw (2016)

Olympus
Micro 4/3

Mid-range	E-M5 (2012) E-P5^W (2013) E-M1^HW (2013) E-M10^THW (2014) PEN-F^THW (2016) E-M1 Mark II^THW (2016)

Entry-level	E-PL1 (2010) E-P1 (2010) E-P2 (2010) E-PL2 (2011) E-PL3 (2011) E-P3 (2011) E-PM1 (2011) E-PL5^W (2012) E-PM2 (2012) E-PL7^W (2014) E-PL8^W (2016)

Panasonic
Lumix

Mid-range	GH1 (2009) GH2 (2010) GH3^THW (2012) GX7 (2013) GM1^THW (2013) GH4^THW (2014)

Entry-level	GF1 (2009) G10 (2010) G2 (2010) GF2 (2010) G3 (2011) GX1 (2011) GF3 (2011) GF5 (2012) G5 (2012) G6 (2013)

Pentax
645 / K /
Q series

High-end	645Z^THgw (2014) K-1^THGW (2016)

Mid-range	K-7^TH (2009) K-5^THg (2010) K-30^THg (2012) K-5 II/K-5 IIs^THg (2012) K-50^THg (2013) K-3^THgw (2013) K-3 II^THGw (2015) K-70^THgw (2016)

Entry-level	K-x^H (2009) K-r^THg (2010) Q^T (2011) K-01^THg (2012) Q10^T (2012) K-500^THg (2013) Q7^T (2013) Q-S1^T (2014)

Samsung
NX series

High-end	NX1 (2014)

Mid-range	NX5^Pg (2010) NX10^Pg (2010) NX11^Pg (2010) NX20^PgW (2012) NX30 (2013) Galaxy NX^PgW (2013) NX500 (2015)

Entry-level	NX100^Pg (2010) NX200^Pg (2011) NX1000^PgW (2012) NX210^PgW (2012) NX300^PgW (2013) NX1100^PgW (2013) NX2000^PgW (2013)

Sony
α

High-end	α99V^HPG/α99^HP (2012) α7/α7R^HPgW (2013) α7S^SHPgW (2014) α7II^HPgW (2014) α7RII^SHPgW (2015) α7SII^SHPgW (2015) α99 II (2016)

Mid-range	α580^HP (2010) α560^HP (2010) α55V^HPG/α55^HP (2010) α77V^HPG/α77^HP (2011) NEX-7^HP (2011) NEX-6^HPW (2011) α65V^HPG/α65^HP (2011) α57^HP (2012) α58^HP (2013) α6000^HPW (2014) α77 II^HPW (2014) α6300^SHPgW (2016)

Entry-level	NEX-3/NEX-3C^HP (2010) NEX-5/NEX-5C^HP (2010) α33^HP (2010) α35^HP (2011) NEX-5N^HP (2011) NEX-C3^HP (2011) NEX-F3^HP (2012) α37^HP (2012) NEX-5R^HPW (2012) NEX-5T^HPW (2013) α3000 (2013) α5000 (2014)

Leica M
Fujifilm X

High-end	Leica M (2012) Leica S (2014) Fujifilm X-Pro2^W (2016) Fujifilm X-T2^PTW (2016)

Mid-range	Fujifilm X-Pro1 (2012) Fujifilm X-E1 (2012) Fujifilm X-E2^W (2013) Fujifilm X-T1^W (2014) Fujifilm X-T10^W (2015)

Entry-level	Fujifilm X-M1^W (2013) Fujifilm X-A1^W (2013) Fujifilm X-A2^W (2015) Fujifilm X-A3^PW (2016) Fujifilm X-A10^W (2016)

Hasselblad XCD

High-end	Hasselblad X1D-50c^GW (2016)

Timelapse^T — Slow motion^S — Fast fps^F — HDR^H — Panorama^P — GPS^G(opt.)^g — WiFi^W(opt.)^w

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