Thread: Sonar quiz #10

Originally Posted by toofuss

Then someone's been trying to pull the shades over us for a long time with these numbers

How?

With these numbers saying that the bigger screen will show us greater resolution images and allow more detail to be shown. It don't matter whether we are talking sonar, TV, computer, anything. If I can get a higher pixel count per square inch with a 5 inch screen vs. A 10 inch, how is a 10 going to show me more info? Maybe I'm wrong here but thats the way it looks to me. For the money we spend on these things a 10 inch screen should have a higher count per inch than a 5 inch screen that's 4-8 HUNDRED dollars cheaper.

I don't think any HB rep has ever said there is more detailed images in larger screens...

It's more like... you should be able to decipher what you are seeing better on a bigger screen...

Better resolution on a 5" screen doesn't mean diddly if that brushpile is the size of a mustard seed...

Rickie

IMO unless it's a drastic difference in pixel count you won't see it unless you zoom in.

Pixels per inch or pixels per square inch (not commonly used) is meaningless unless it is coupled with image resolution and image size. A 640x640 resolution on a smaller screen will naturally have a higher PPI than that on a larger screen. The human eye has a resolution limitation that is dependent upon pixel size which is determined by viewing distance and PPI, so having a high pixel density per square inch on a smaller screen is not advantageous if the pixel size is too small for our eyes. Unless of course, you a zooming in a small area as justinp61 suggests.

I can tell all that zooming in on a 9 touch is a disappointment. ( down image)

Don’t forget the distance that you are viewing the display from.
Having many pixels per square inch is nice but for those of us who are in the ‘bifocal age’ of our lives we want to be able to see what is on the screen without leaving a nose print! Most can see the detail shown on the larger (less pixel dense) display units because we can see them from a normal seated-driving position or more importantly from the deck while working the trolling motor at the bow.

I have question that I hope not too dumb. Is the center of the compass your GPS is located on the boat and has nothing to do with the transducer at this point? Thanks so much for this thread.

Originally Posted by rnvinc

Your statement in blue above is correct....

No matter which way the boat is moving ("course")...nor which way the boat is facing ("heading")...:

*North (on the Earth's face) is always considered as 0/360°
*East (on the Earth's face) is always considered as 90°
*South (on the Earth's face) is always considered as 180°
*West (on the Earth's face) is always considered as 270°

The "Bearing (°) to" data box (during an "Active Cursor" function)...is referring to how many degrees (°) from North (on the Earth) is the direction of the "Active Cursor"...

In this case of my screenshot in the OP...the "Active Cursor" was 293° from North (on the Earth's face)...



Rickie