Sony releases SLT-A77, successor of DSLR-A700
August 24th, 2011 - 09:00:16 AM:
The rumors were intensifying over the last weeks, and finally Sony has released the successor to the DSLR-A700 today, the SLT-A77.
|SLT-A77, AF DT 16-50/2.8 SSM|
The slight disadvantage is that since only 2/3 of the light reaches the image sensor, the sensor signals need to be amplified a bit more to reach the nominal ISO rating compared to more traditional DSLRs, potentially increasing noise. Also, the semi-transparent mirror needs to be of high quality to avoid negative impact on image quality.
This principle of constructing a DSLR has been introduced already with the A55 and A33 (later replaced by the A35). Now Sony has released the A77, which implements this principle in a semi-pro body, with a more robust build, advanced features and higher specifications.
The main differences of the new camera compared to the lower-level SLTs are:
- Higher resolution, 24 MP on an APS-C sensor.
- Higher frame rate of up to 12 frames/s.
- Better OLED electronic viewfinder with XGA resolution.
- Larger, more robust construction, vertical grip (VG-C77AM), two control wheels, studio flash connector
- Video recording with 1080p50/p60 and manual control
Compared to the DSLR-A700, the main differences are:
- SLT with electronic viewfinder
- Full HD Video recording
- Higher number of AF sensors, and more cross-type sensors
- Features that were introduced over time in lower-level bodies, like HDR, tilt/swivel rear display, face recognition, panorama shooting, GPS.
- No CompactFlash slot!
- Top LCD
Together with the A77, the SLT-A65 is released. It is very similar to the A77, with the following major differences:
- Plastic body instead of magnesium alloy.
- No top LCD
- Fewer cross-type AF sensors
- Slower shooting speed and minimum exposure time
- No weather sealing
New kit lens AF DT 16-50/2.8 SSM
With the new cameras, Sony also released a new standard zoom lens, the AF DT 16-50/2.8 SSM. It features a large constant maximum aperture and a fast and silent SSM focus motor. The lens is also sealed against dust and moisture.
Both cameras and lens are expected to be available in shops in October/November.
- Tech data of SLT-A77 (to be completed)
- Tech data of SLT-A65 (to be completed)
- Tech data of AF DT 16-50/2.8 SSM