Some images of the same bundle of Christmas trees, for comparison of 19.1 vs 18.3. Again, this body of water is notorious for poor images, and this set of shots was taken in a 18mph crosswind.
The first two, a Live 12. Interesting that the brush does not show up well on the side image, even though the downscan shows it well; the boat was directly over the trees. Clearly, the sidescan elements have trouble showing what is directly down.
A Carbon 9.
My impressions of 19.1 were good. We've asked for more sensitivity control for a long time; it appears this is a step in the that direction.
Images in the lake basin, say 25-40 feet, with a soft bottom would be almost black if the optimum contrast settings for shallower, harder bottom areas were used. At least on the body of water I was on, basin areas took about an A+18 setting in 40 feet and mud bottom. Shallower, and harder bottom, the neighborhood of A+2 was more to my liking. Previously, it seems, depth changes never took that wide of a range of adjustment.