Another question about fish finders

[RipNLips]

BLM's comment on vertical pixels is good advice. Let's say you have two sonar units that are equal on all counts except the vertical pixels. Though not standard, for comparison purposes let's say one has 200 and the other has 600 vertical pixels (a 1 to 3 ratio). It's 100 feet to the bottom where you're fishing and the entire water column is covering your screen. That translates to 2 pixels/ft and 6 pixels/ft respectively. Though both units are receiving an equal echo of something suspended off the bottom, it's the software inside the unit that translates the echo to pixels. With equal software, 1 pixel on the low res' unit would be 3 on the high res' unit. An echo barely worthy of 1 pixel on the high res' unit will not light any pixels on the low res' unit because the echo is only 1/3 the strength needed to be worthy of lighting a pixel. Also, one line, two pixels thick, created by two stacked fish on the low res' unit would be two lines, each one pixel thick, separated by two to four blank lines on the high res' unit.
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