I was out just yesterday testing my motor for some ongoing fuel mix issues and while I was idling around a heavily forested area with submerged trees, I thought I'd play with the sonar.
Here are some strange findings I found just by turning the surface clarity from "LOW" to "OFF". I found it really odd that it dramatically increased what I was picking up below the surface and not just "cleaning up the screen".
I have problems using 800khz because I usually don't pickup bottom or anything at all. Here are some shots using these setings:
- 800khz
- Contrast 80%
- Surface Clarity OFF
- Color (White Background)
- Depth (Auto)
Attachment 134695 Attachment 134696
Here are two comparison shots using 455khz (what I typically use due to the wider sonar zone vs. the narrow 800khz
The first image Surface Clarity "LOW". The second image shows Surface Clarity "OFF"
In my mind, there is a dramatic difference in just those two settings. If I turned it to "MED", I wouldn't even get as much as I was getting on "LOW".
Depth range also plays a big factor in this. The deeper the water, the less surface clarity you need. If I did this in 20ft of water, I'd probably have a very busy screen and just pick up a lot of debris and such thus the "LOW" setting is preferred depending on water clarity.
Settings were:
- 455khz
- Contrast 68%
- Surface Clarity OFF
- Color (White Background)
- Depth (Auto)
Surface Clarity "LOW"
Attachment 134693
Surface Clarity "OFF"
Attachment 134694