It provides the live view image for the high-resolution, adjustable 3-inch monitor and the OLED viewfinder, which sets new standards with 786432 RGB pixels. The remaining 30% of the light is directed by the SLT mirror to the 19 AF sensors, so the fast phase autofocus does not only work in single-frame, but also in live-view and video mode without a black pause.
Picture gallery
This gives the Sony A77 enormous advantages in the video comparison, especially since it is one of the few cameras of its class to pull the sharpness during filming softer and more accurate. To the video specialist fits, that it stores moving pictures in the progressive mode 1080p with 1920 x 1080 and 50 full images / s. Very good are also the trip delay (0.29 / 0.39 s including AF) and the data throughput in the serial mode (12 B / s). The A77 also features a sensor cleaning system, an image stabilizer and an integrated flash. Compared to the A65, it allows for shorter shutter speeds (1/8000 instead of 1/4000 s) and low-speed shooting (ISO 50 instead of 100), allows more room for exposure correction and provides a sealed housing. Image Quality As the A77 and A65 work with the same sensor, it seems little wonder that the two RAW tests are nearly the same dynamics (10.0 iris at ISO 100, below 7 iris from ISO 1600), almost identical noise (0 , 4 to 5.4 VN) and an equally excellent texture (kurtosis 0.0 to 0.2). However, there was a surprise to the resolution: the A77 can boost the performance against JPEG, but remains at 1758 LP / BH at ISO 100 well below the level of the more favorable A65 from the last issue. A second series has confirmed this result. Also the representation of the Dead-Leaves-Charts succeeds the A77 less well. Compared to JPEG, the A77 scores here with higher resolution, better fine-tuning and weaker noise. It is only with a sensitivity of ISO 3200 that the visual noise increases significantly. The lower contrast costs points.
Download: Table
Conclusion The change from JPEG to RAW is only rewarded with low sensitivity with a better picture quality. At higher ISO figures, on the other hand, the decreased DL values are more pronounced. Because of the very good overall performance, the A77 still earns the purchase tip video. The JPEG-based test of the Sony A77 can be found here. Www.sony.de
Sony Alpha 77 RAW
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