دوربین فول‌فریم Alpha A7s، سلطان عکاسی در نور کم، با قیمت ۲۵۰۰ دلار وارد بازار می‌شود

Sensor (effective resolution)

20.2MP CMOS

n/a

16.1MP Live MOS

12 bits

24.3MP Exmor CMOS

14 bits

12.2MP Exmor CMOS

14 bits

Sensor size

22.5 x 15mm

17.3mm x 13mm

35.8 x 23.9mm

35.8 x 23.9mm

Focal- length multiplier

1.6x

2.0x

1.0x

1.0x

Sensitivity range

ISO 100 - ISO 12800/ 25600 (exp)

ISO 100 (exp)/ 200 - ISO 25600

ISO 50

(exp)/ ISO 100 - ISO 25600

ISO 50

(exp)/ ISO 100 - ISO 102400/ ISO 409600 (exp)

Burst shooting

7fps

16 raw/65 JPEG

7fps

40 raw/100 JPEG

(12fps with fixed focus; 40fps with electronic shutter)

2.5fps (5fps with fixed exposure and focus)

2.5fps (5fps with fixed exposure and focus)

Viewfinder

98% coverage

0.95x/0.59x

OLED EVF

n/a-inch

2.36 million dots

100% coverage

1.34x/0.67x

OLED EVF

0.5-inch

2.4 million dots

100% coverage

0.71x

OLED EVF

0.5-inch

2.4 million dots

100% coverage

0.71x

Autofocus

Dual Pixel CMOS

19-pt phase-detection AF all cross-type; center cross to f2.8

49-area contrast AF; DFD

Hybrid AF system

25-area contrast AF; 117-pt phase- detection

25-area contrast AF

AF sensitivity range

-0.5 to 18 EV

-4 to 18 EV

0 - 20 EV

-4 - 20 EV

Shutter speed

1/8,000 to 30 secs; bulb; 1/250 x-sync

60-1/8,000 sec.; bulb to 60 minutes; 1/250 x-sync

1/8,000 to 30 secs; bulb

1/8,000 to 30 secs; bulb

Shutter durability

100,000 cycles

200,000 cycles

n/a

n/a

Metering

63-zone iFCL

1,728-zone

1,200 zones

1,200 zones

Metering range

1 to 18 EV

0 to 18 EV

0 - 20 EV

-3 to 20 EV

Flash

Yes

Yes

No

No

Wireless flash

Yes

Yes

No

No

Image stabilization

Optical

Optical

Optical

Optical

Best video

H.264 QuickTime MOV 1080/30p/ 25p/24p; 720/ 60p/50p

MP4/MOV 4096 x 2160/24p, 3840 x 2160/30p/25p/24p @ 100Mbps (IPB); 1080/60p/ 50p @ 200 Mbps (All I)

AVCHD 1080/60p @ 28Mbps, 1080/60i/ 24p @ 24Mbps

XAVC S UHD/30p/25p 4K via HDMI; XAVC S 1080/60p @ 50Mbps; 720/120p

Audio

Stereo; mic input

Stereo; mic input; headphone jack

Optional XLR

Stereo; mic input; headphone jack

Stereo; mic input; headphone jack

LCD size

3 inches inches articulated touch screen

1.04m dots

3-inch tilting touch-screen OLED

1.04m dots

3 inches tilting

921,600 dots

3 inches tilting

921,600 dots

Wireless

Wi-Fi

Wi-Fi, NFC

Wi-Fi, NFC

Wi-Fi, NFC

Battery life (CIPA rating)

800 shots

(210 Live View)

500 shots

(1860 mAh)

340 shots

(1080 mAh)

360 shots

(1080 mAh)

Dimensions (WHD)

139.0 x 104.3 x 78.5 mm

132.9 x 93.4 x 83.9 mm

126.9 x 94.4 x 48.2 mm

126.9 x 94.4 x 48.2 mm

Body operating weight

771.1 g

560 g (est)

487.6 g

487.6 g

Mfr. price (body only)

$1,119.00

$1,699.99

$1,699.99

tbd

Primary kit

$1,349.00 (with 18-55mm STM lens)

n/a

$1,999.99 (with 28-70mm lens)

tbd

Alternate kit

$1,549.00 (with 18-135mm STM lens)

n/a

n/a

tbd

Ship date

September 2013

May 2014

December 2013

June 2014