≡ Menu

Gear Review: Sony A7s (Alpha ILCE-7s)

sony-a7s-review
Review of: Sony A7s

Reviewed by:
Rating:
5
On April 7, 2014
Last modified:April 22, 2014

Summary:

Yesterday, Sony announced the new A7s. A full frame mirror less camera. Sony had already outdone themselves with the launch of the first full frame mirror less A7 and A7r cameras. Now packed with 4k video, the A7s is definitely an eye opener. But how does it compare to its competition? Check out the A7s preview below.

Overview

The Sony A7s has a slightly lower resolution, but it still is a great camera from a tech stand point. In fact, the lower resolution will actually benefit the camera. The pixel count is large enough to produce professional work but small enough to reduce lag from processing  while shooting the 4k or HD  video. After all, 4k video only requires 8.8 Megapixels while Full HD requires only 8.3 MP. SO more than enough pixels there. One important thing to note is that the A7s is incapable of 4K video on its own. Unlike the Panasonic Lumix GH4, you will have to hook up an external hard drive and record the 4K video via HDMI.

sony-a7z-top-view

The A7s has a lot of the same features as the other Alpha cameras including cosmetics. Some improvements over other Alpha cameras include the ability to store XAVC S format video on  a Class 10 SD card as well as a greater sensitivity (ISO) range. You will also enjoy a slightly longer battery life and the ability to shoot 120FPS at 720p.  Despite being able to obviously take photographs, this is definitely a camera geared towards videographers. And a good one at that.

Check out this sample footage shot on the A7s in 4K video:

 Comparison:

Lumix DMC-GH4 Sony A7 Sony A7s
Sensor  16.1MP Live MOS
12 bits
24.3MP Exmor CMOS
14 bits
12.2MP Exmor CMOS
14 bits
Sensor size 17.3mm x 13mm 35.8 x 23.9mm 35.8 x 23.9mm
Focal Length 2.0x 1.0x 1.0x
ISO 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
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 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 49-area contrast AF; DFD Hybrid AF system
25-area contrast AF; 117-pt phase- detection
25-area contrast AF
AF sensitivity -4 to 18 EV 0 – 20 EV -4 – 20 EV
Shutter speed 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 200,000 cycles n/a n/a
Metering 1,728-zone 1,200 zones 1,200 zones
Metering range 0 to 18 EV 0 – 20 EV -3 to 20 EV
Flash Yes No No
Wireless flash Yes No No
Image stabilization Optical Optical Optical
Best video 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; headphone jack
Optional XLR
Stereo; mic input; headphone jack Stereo; mic input; headphone jack
LCD size 3-inch tilting touch-screen OLED
1.04m dots
3 inches tilting
921,600 dots
3 inches tilting
921,600 dots
Wireless Wi-Fi, NFC Wi-Fi, NFC Wi-Fi, NFC
Battery life  500 shots
(1860 mAh)
340 shots
(1080 mAh)
360 shots
(1080 mAh)
Dimensions 5.2 x 3.7 x 3.3 in
132.9 x 93.4 x 83.9 mm
5.0 x 3.8 x 1.9 in
126.9 x 94.4 x 48.2 mm
5.0 x 3.8 x 1.9 in
126.9 x 94.4 x 48.2 mm
Body weight 19.8 oz (est)
560 g (est)
17.2 oz
487.6 g
17.2 oz
487.6
MSRP body only $1,699.99 $1,699.99 $1,699.99
Primary kit n/a $1,999.99 (with 28-70mm lens) $1,999.99
Alternate kit n/a n/a tbd
Ship date May 2014 December 2013 June 2014
[Via CNET]
 

Be sure to follow us on Facebook and Twitter for updates to this Sony A7s review including more sample video/images as well as a full field test and recommendation!

comments powered by Disqus