Thread: Down Imaging vs Side imaging vs neither

Originally Posted by Vik3

What you showed is a true SI image! True DI never show shadows and details on the bottom even a bit aside. The screenshot was taken above a very step (inclined) bottom, DI beam sees only one side like SI beam. This is why you see these tree shadows. On leveled bottom one will see nothing with dedicated DI.
Most of all those advertising DI images of leading sonar companies with nice shadows on bottom were done above sunken mountings.
Only Humminbird SI provides true vision under the boat. IMHO

I respectfully disagree :

IMHO .... mine can't be a "true SI image" .... as it was taken with a Lowrance Elite 5 DSI unit. It only does DI ... no 2d, no SI, as it only has a dedicated crystal for DI imaging.

I get "shadows" on some of my screen shot images, as shown here :




But, not all of them will have "shadows" .... possibly because of the bottom contour beneath the cover being imaged, or maybe the depth

Normally I would get images that look like this :



... cp