Day 2: A99 vs A900 - high ISO

Started Nov 2, 2012 | Discussions thread
Amateur Sony Shooter
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Re: Day 2: A99 vs A900 - high ISO
In reply to GuyMcKie, Nov 3, 2012

GuyMcKie wrote:

What is the -1,3 EV in the 6400 shot of the a900? Exposure compensation in the raw program or in the camera settings? And does it mean that the a99 is less sensitive at 6400 ISO?

Good catch! For some reason A900 over exposed before I dialed down EV-1.3 (hightlight brownout). My pet theory is that 6400 is the last scale at expended ISO range, sensor is no longer reliable at this level, while A99 sensor behaved as should.

The a900 shots have more detail, contrast and are a little bit lighter. With some tweaking in the raw convertor the a900 3200 iso could be very close to the result of the a99, regarding detail and noise.

Obviously my Minolta 50/1.7 has focus shift issue on different body. On A900 the focus is more on toy bird while on A99 focus shifted toward bottle.

 Amateur Sony Shooter's gear list:Amateur Sony Shooter's gear list
Sony RX100 Sony SLT-A99 Sony 70-200mm F2.8 G Sony 16-35mm F2.8 ZA SSM Carl Zeiss Vario-Sonnar T* Sony 24-70mm F2.8 ZA SSM Carl Zeiss Vario-Sonnar T* +6 more
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