Sony Alpha 55#SLT-A55V

{{Infobox camera

| model = Sony α55

| image = 300px

| caption = SLT-A55V + SAL1680Z

| kind = Digital single-lens translucent camera

| sensor = APS-C CMOS Sensor

| res = 16.2 megapixels

| lens = Interchangeable, A-mount

| shutter = Electronically controlled, Vertical-traverse, Focal-plane Shutter

| shutterRange = 30 – 1/4000 sec, bulb

| metering = TTL full aperture exposure metering system
1200-zone evaluative

| emode = Programmed AE (AUTO, AUTO – Flash Off, P), Aperture priority, Shutter priority, Manual, Scene selection

| mmode = Multi-segment, Centre-weighted, Spot

| farea = 15-point (12 line, 3 cross) phase-detection AF system

| fmode = Single-shot AF, Automatic AF, Continuous AF, Manual Focus

| cont = 10 FPS / 6 FPS

| viewfinder = EVF, 100% coverage, 1.10× magnification

| speedRange = ISO equivalency 100 to 12,800 in 1.0 EV steps, boost to 25,600 in Multi-Frame Noise Reduction mode

| flash = GN 10 at ISO 100

| flbkt =

+`

| fcbkt =

| WB = Auto / 6 presets / Colour Temperature/Colour Filter / Custom WB

| wbbkt =

| rearLCD = 3.0" TFT LCD, 921k dot resolution, variable-angle tilt/swivel

| storage = SD/SDHC/SDXC/Memory Stick Pro Duo

| battery = NP-FW50 Lithium-ion battery rechargeable battery

| dimensions = 124 × 92 × 85 mm

| weight = {{convert|441|g|abbr=on}}

| obp = Unavailable

| madeIn = Thailand

| footnotes = [http://www.dpreview.com/reviews/sonyslta55/page3.asp 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.

File:Sony Alpha 55 at store.JPG

File:A55 with beercan.JPG "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:

class="wikitable"
rowspan="2"| Model name	rowspan="2"| Ambient temperature	colspan="2"| Image Stabilization
On	Off
rowspan="3"| α55 (SLT-A55V)	{{convert|20|°C}}	9 min	Approx. 29 minutes
{{convert|30|°C}}	6 min	13 minutes
{{convert|40|°C}}	3 min	5 minutes
rowspan="3"| α33 (SLT-A33)	{{convert|20|°C}}	11 min	Approx. 29 minutes
{{convert|30|°C}}	7 min	Approx. 22 minutes
{{convert|40|°C}}	4 min	9 minutes