This last image, obtained by CHIRPing around the MEGA Imaging frequency, exhibits some enhancements over the traditional 455 kHz image. Those enhancements are primarily associated with the resolution of the pieces of structure (how sharp their edges are) and their sonar shadows. In both cases, the edges are cleaner, with less fuzziness for the structure and the shadows. This increase in resolution (image sharpness and clarity) is entirely consistent with the higher imaging frequency range. Notice also that image intensity is tapering off towards the edges of the Side Imaging range, especially compared to the 455 kHz image above, an image that has relatively uniform intensity throughout the Side Imaging range. This decrease in image intensity at longer ranges is also consistent with the properties of this high frequency MEGA Imaging beam. In our experience, using MEGA Imaging with both HELIX and SOLIX, the optimum Side Imaging range for MEGA Imaging is between 75 and 90 feet.
So why is a higher resolution image, with sharper, crisper edges for both structure and sonar shadows, an important tool for the angler? For a situation like the one examined above, the benefits would primarily come in being able to more easily identify fish that are holding tight to the structure. Those fish might be missed with traditional 455 kHz imaging, as the fuzzy edges of the structure might be able to conceal a fish tucked in tight. With MEGA Imaging, however, the edges of the structure will be noticeably sharper, making nearby fish easier to identify and pursue.