The Sony a9 is a powerhouse of technology, particularly when it comes to speed and autofocus. But does its image quality stack up? We've taken an initial look at Raw and JPEG image quality and have come away impressed, but how does the a9 stack up in terms of dynamic range?
At the recent launch in New York City, I had a chance to shoot our standard ISO-invariance test but on a real-world scene (our studio scene isn't so portable...). Have a look at the performance below.
It's immediately obvious the a9 is not ISO-invariant (what is 'ISO-invariance'?). This means the camera is adding a fair amount of read noise that results in noisy shadows, limiting dynamic range at base ISO. That's why, for the same focal plane exposure, performing analog amplification by increasing ISO in-camera gets you a cleaner image than performing that amplification (or brightening) in post-processing.
It's not the typical performance we've come to expect from Sony sensors and we suspect the higher readout speed is leading to greater noise. In other words, it appears this sensor was likely optimized for speed at the expense of low ISO dynamic range.
This sensor was likely optimized for speed at the expense of dynamic range
Ultimately, this limits the exposure latitude of a9 Raws, so you'll have some limited ability to expose high contrast scenes for the highlights, then tonemap* (raise) shadows in post. You can check the effect of changing the Drive mode in the widget (EFCS = electronic first curtain, S = single, C = continuous), but there's not much difference between them.
© 2017 eOnline24.com . All rights reserved.
Welcome to the eonline24.com - eonline24 is an website portal providing latest news globally.
We pleasure ourselves with bringing you great and fresh quality content on technology, entertainment,
business, marketing tips, latest gadget, startup news and much more. Are you in to know the latest news,
new update, live news, current news gossips, photos and more, then don’t hold back!