Sony Alpha DSLR-A700 Review
Super SteadyShot (Sensor-shift Image Stabilization)
The DSLR-A700 features Sony's 'Super SteadyShot' sensor-shift image stabilization system (a development of the 'Anti-Shake' system we first saw on the Konica Minolta 7D). This system works by moving the sensor in the opposite direction to the sensed shake movement of the camera.
The stabilization test
This test is designed to produce a determination of the relative improvement you should expect using the SteadyShot system compared to with it switched off. Twenty hand-held shots are taken of a static scene at reasonable shutter speed (1/80 sec in this case), ten without stabilization, ten with. The shutter speed is then decreased by a stop and twenty more shots taken, this is repeated down to 1/10 sec. The test chart was approximately 1.2 m away from the camera.
The resulting eighty images were then inspected and given a blur score from zero to three where zero represented a very blurred image and three a sharp image with no noticeable blur (see crop examples below). Obviously the amount of blur which is acceptable will depend on your personal taste and the final image size (for instance a '2: Soft' will still look fine as a 4x6 print or in a web gallery). Example crops from these four blur scores can be seen below.
|0: Very blurred||1: Blurred|
|2: Soft||3: Sharp|
Hand-held, no stabilization (75 mm equiv. FOV)
The results here show that at 1/80 sec all of our shots were sharp, but this dropped to just six at 1/40 sec and after that only a few 'acceptable but soft'.
Hand-held, with Super SteadyShot (75 mm equiv. FOV)
With 'Super SteadyShot' switched on you can see an immediate improvement. At 1/40 sec we had a total of seven sharp images, at 1/20 sec an impressive four sharp images and six other 'acceptable but soft' and even two sharp images at 1/10 sec. Overall a good performance.
- Canon EOS M58.8%
- Panasonic G85/G803.3%
- Panasonic FZ2500/FZ20001.9%
- Panasonic LX10/LX151.2%
- Panasonic GH5 development3.6%
- Sony a99 II15.9%
- Nikon KeyMission 170 and 801.0%
- Fujifilm GFX 50S development28.3%
- Olympus E-M1 II development18.7%
- Olympus E-PL80.1%
- Olympus 25mm F1.2 Pro1.5%
- Olympus 12-100mm F4 IS Pro1.9%
- Olympus 30mm F3.5 Macro0.1%
- Sigma 85mm F1.4 Art3.6%
- Sigma 12-24mm F4 Art2.6%
- Sigma 500mm F4 DG OS HSM Sport2.4%
- YI M12.2%
- GoPro Hero50.8%
- GoPro Karma drone2.2%
|Sunflower Field by GrannyMeg|
from An impressionist piece
|Flag from Staten Island Ferry by wam7|
|Windswept juniper by Kreber|
from Wind power
|SAND SCULPTURE by duskman|
from Landscape - Black and White #4