Quote from: garry23 on February 19, 2015, 12:26:54 AM
Neavissa
You might wish to reread what Dual ISO is all about.
Put simply, dual ISO achieves a two image bracket but in a single frame.
The two images are captured at the same time and interlaced in the image, hence the cr2hdr process is taking the interlaced data and creating a new digital negative, ie a DNG.
The interlaced images are separated in exposure space by different ISOs, ie the two ISO, interlaced brackets, have the same aperture and shutter speed.
The DNG negative will definately need post processing, as any RAW image will.
The advantage is that the dual ISO will have 2-3 stops of additional dynamic range.
Thanks for the reply. I got all of this so far, but I am still not sure what the difference is between using cr2hdr.exe, or the Lightroom plugin?! It seems like both "methods" achieve the same thing, right?!
QuoteFor optimum capture use ETTR and dual together, ie push the tonal data to the right, without overexposing, and 'fill in' the shadows with dual ISO.
I am going to have to look up how to use ETTR and dual together...
thanks,
G