New Feature : ETTR mode
Posted: 20.12.2012 15:49
Hi,
ETTR stands for expose to the right.
Basically it's exposing so the histogram is the most full à it's right end as possible without cliping. That's the only way to get the best from the sensor (best per pixel quality, much less noise, more room for shadow recovery etc). Of course that's in RAW.
So nowadays to do it, you've to over expose step by step and check the histogram to get from the computer exposure to the most optimal one. So it involves some tries.
Helicon could just figure it out much faster than us, perhaps even without any iterations, just by computation.
That's for a single exposure, so it works with live moving subjects.
Afterwards, helicon could go a notch deeper by showing the preview compensated for the ETTR, that means rather than previewing the jpeg as shot, which would lead to overexposure, it would preview it underexposed by the delta between camera auto's exposure and Helicon's ETTR setting.
To learn more about ETTR see that blog
http://diglloyd.com/blog/2012/20121127_ ... lt-in.html
ETTR stands for expose to the right.
Basically it's exposing so the histogram is the most full à it's right end as possible without cliping. That's the only way to get the best from the sensor (best per pixel quality, much less noise, more room for shadow recovery etc). Of course that's in RAW.
So nowadays to do it, you've to over expose step by step and check the histogram to get from the computer exposure to the most optimal one. So it involves some tries.
Helicon could just figure it out much faster than us, perhaps even without any iterations, just by computation.
That's for a single exposure, so it works with live moving subjects.
Afterwards, helicon could go a notch deeper by showing the preview compensated for the ETTR, that means rather than previewing the jpeg as shot, which would lead to overexposure, it would preview it underexposed by the delta between camera auto's exposure and Helicon's ETTR setting.
To learn more about ETTR see that blog
http://diglloyd.com/blog/2012/20121127_ ... lt-in.html