The GPS locater is incredibly accurate and can be used in conjunction with several other features to ensure that you get immediate results. Treuarch technology is also present which reduces the interference when reading sonar, once again leading to more accurate, less exaggerated fish readings.ĬHECK THE LATEST PRICE ON AMAZON Internal GPS Locator This is read and then shown on screen via one of three symbols associated with fish size, allowing you to decide whether the catch below you is worth your time or not. The unit also has Fish ID+ which utilises the sonar capabilities found on the device to ascertain the relative size of the fish.
Downscan Imaging allows you to take snapshots of the water as you are travelling along, slowly building piece by piece a window into the world beneath your feet which you can then utilise to identify key features, species of fish as well as depth readings when combined with the traditional sonar. The unit also runs at 455-800kHz for Downscan Imaging and this is a feature increasingly implemented onto higher-end fish finder units. The unit operates at both 20 and 60 degrees, allowing you for to cover a wide area of water below you. The sonar frequency runs at 200kHz which is excellent for shallow to medium depth fishing, with the unit returning clear, detailed information for both catches and structures. The sonar capabilities of the unit are also impressive. Both are crystal clear on the screen and either one can be easily enhanced to truly show off the capabilities of this unit. The unit is also split-screen, with one side potentially being dedicated to traditional 2D sonar readings whilst the other is dedicated to the DownScan Imaging capabilities. As noted by several user testimonials, the units ability to distinguish between structures, objects and fish makes the screen light up, often providing you as an angler with several objectives to look at whilst not being distracting.
The colour palette available is also excellent, with the screen showing 256 colours which allows for easy distinguishing between the features located below you in the body of water. The 597ci HD DI manages to have one of 640 x 640, which makes the detail available so much finer to the yeye. Similar units tend to have a resolution of 480 x 480 pixels. Where it makes a crucial difference though is the screen resolution. The 597ci HD DI comes per standard with a 5-inch screen which is right in-line with similar units.