Sony Alpha 55

Sony α55
Overview
SLT-A55V + SAL1680Z
Type	Digital single-lens translucent camera
Lens
Lens	Interchangeable, A-mount
Sensor/Medium
Sensor	APS-C CMOS Sensor
Maximum resolution	16.2 megapixels
ASA/ISO range	ISO equivalency 100 to 12,800 in 1.0 EV steps, boost to 25,600 in Multi-Frame Noise Reduction mode
Storage	SD/SDHC/SDXC/Memory Stick Pro Duo
Focusing
Focus modes	Single-shot AF, Automatic AF, Continuous AF, Manual Focus
Focus areas	15-point (12 line, 3 cross) phase-detection AF system
Exposure/Metering
Exposure modes	Programmed AE (AUTO, AUTO – Flash Off, P), Aperture priority, Shutter priority, Manual, Scene selection
Exposure metering	TTL full aperture exposure metering system 1200-zone evaluative
Metering modes	Multi-segment, Centre-weighted, Spot
Flash
Flash	GN 10 at ISO 100
Flash bracketing	+`
Shutter
Shutter	Electronically controlled, Vertical-traverse, Focal-plane Shutter
Shutter speed range	30 – 1/4000 sec, bulb
Continuous shooting	10 FPS / 6 FPS
Viewfinder
Viewfinder	EVF, 100% coverage, 1.10× magnification
Image Processing
Custom WB	Auto / 6 presets / Colour Temperature/Colour Filter / Custom WB
General
Rear LCD monitor	3.0" TFT LCD, 921k dot resolution, variable-angle tilt/swivel
Battery	NP-FW50 Lithium-ion battery rechargeable battery
Optional battery packs	Unavailable
Dimensions	124 × 92 × 85 mm
Weight	441 g (15.6 oz)
Made in	Thailand
Footnotes
dpreview

The Sony α55 (model variants SLT-A55V with GPS, SLT-A55 without GPS depending on country) is a midrange-level SLT camera, released in August 2010.

A-mount, APS-C CMOS sensor

Sony Alpha 55 with Minolta AF 70-210mm f/4 "Beercan" lens

Its design is novel due to its being the first digital single-lens translucent camera (SLT), along with the Sony α33. As an SLT it employs a semi-transparent mirror instead of an opaque mirror, which enables phase detection autofocus in live view.

The design also replaces the optical viewfinder present in conventional DSLR with a high-resolution electronic viewfinder. The translucent mirror is fixed in position so does not have to flip up to take a still image, enabling rapid continuous shots of up to 10 frames per second. The static mirror also eliminates "mirror slap", the noise produced by the movement of the mirror during a shutter actuation, making the A55 quieter than standard DSLRs.

The A55 is one of the first four Sony Alpha DSLR / SLT cameras with video mode included, capable of 1080i. It is also capable of shooting 1080p at 30fps. The SLT design means that it is capable of using phase-detection autofocus during video recording. It has body-integrated image stabilization, and a 16.2 MPx APS-C CMOS sensor.

The camera's body-integrated image stabilization produces heat, causing the camera to stop video recording after these recording times:

Model name	Ambient temperature	Image Stabilization
Model name	Ambient temperature	On	Off
α55 (SLT-A55V)	20 °C (68 °F)	9 min	Approx. 29 minutes
	30 °C (86 °F)	6 min	13 minutes
	40 °C (104 °F)	3 min	5 minutes
α33 (SLT-A33)	20 °C (68 °F)	11 min	Approx. 29 minutes
	30 °C (86 °F)	7 min	Approx. 22 minutes
	40 °C (104 °F)	4 min	9 minutes

Features

Konica Minolta A-mount lens bayonet.

Video

AVCHD 1080 50i or 60i (depending on region)
MPEG-4 1080 30p or 25p (depending on region)^[1]

External links

Wikimedia Commons has media related to Sony SLT-A55 and Taken with Sony SLT-A55.

Reviews

References

↑ Manual

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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