Olympus Auto-Gradation -- local adjustments can look very odd

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medon78
medon78 Regular Member • Posts: 158
Olympus Auto-Gradation -- local adjustments can look very odd
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Better late than never: Just yesterday I realized that the Olympus Auto-Gradation feature is not just an adjustment of the global tone curve, but it includes also local adjustments - kind of an advanced unsharpen mask with a big radius. Details see https://www.dpreview.com/articles/3798759501/apical... here on dpreview.

The effect of these local adjustments is rather big. Now that I know what to look for, it does not take long to find extreme examples. From my last trip, I brought this one:

https://www.dropbox.com/s/mipplyr1p9bmn0y/P5149831_normgrad_EV%2B0p4.jpg?dl=0 -- Normal Gradation (+0.4 EV push in OV3)

https://www.dropbox.com/s/s0sofkbdmwwjuq8/P5149831.JPG?dl=0 -- Auto-Gradation

If you want to play with the RAW, there you go:

https://www.dropbox.com/s/2uulh4zwsysm59j/P5149831.ORF?dl=0

If you flick both JPEGs back and forth, the effect is very visible.

Actually I liked the Auto-Gradation feature quite a lot so far for pulling shadows in camera, not having to bother with Lightroom.

And, it works really well in some cases... in other cases, you lose a lot of plasticity in the image (like in the example), and the results look odd.

What bothers me most is, that the AGR feature reacts on the lenses vignetting at times.

Any hints and best practice, other than "avoid AGR like the plague"?

BR Medon

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