Jack Douglas said:
Now that's a very nice shot Jon, but there is something about it that just doesn't seem to really do it for me, almost as if I'd like more contrast. Can you explain what you perceive to be the major gain of the merge. Admittedly, I don't really qualify to be a judge of such things but I'm always trying to learn from these exchanges.
As we've been debating in the 7D II thread, Canon sensors are indeed severely DR limited in situations like this. To get detail around the sun, and get detail in the foreground, I had to use a 5-frame bracketed exposure. This is the first (-4 stop) frame (and pulled):
This is the last (+4 stop) frame:
This is the middle frame, and a version of it that's been processed to maximize shadow and highlights:
However this is the sun from the processed middle frame, with posterization:
And the shadow noise from the processed middle frame:
To me, the posterization and shadow noise is completely unacceptable. Hence, the reason for the HDR. I think there is actually a lot of contrast in the HDR image I've shared...tonal range goes from near complete black to pure white, there is a lot of contrast in the clouds. There is some flare right over the sunflower field, which is probably where your seeing a loss of contrast most. I could probably try to deepen the tones in the foreground more, I haven't actually finished processing this shot yet.
Anyway, this is a GIF that shows the differences in foreground detail between the first, third, and fifth exposures:
To me, the processed middle image from the bracket is just not good enough. I wanted more, I wanted better detail throughout the entire image, right into the sun. Hence the reason for the HDR. I'm the first to admit, I am not nearly as skilled with landscapes as I am with birds and wildlife. I've always had problems with shadow noise when processing landscapes. It was actually not quite as bad on the 7D at ISO 100 (ironically)...it's really bad with the 5D III. Completely unacceptable, in my opinion.