Fishfinder: Color Vs Black and White

dreadinger

Seaman Apprentice
Joined
Jan 6, 2009
Messages
45
Is there any advantage of having a color fishfinder vs a black and white?
 

Wee Hooker

Chief Petty Officer
Joined
Sep 11, 2005
Messages
618
Re: Fishfinder: Color Vs Black and White

Some. Contrasts are somewhat better making details easier to spot. That said, many lower end color units substitute color for pixel count. The latter is WAY more important.
FWIW I recently bought a Humminbird 767 with black and white but super detailed display. No regrets and I saved nearly $300 in staying with the B7W.
 

dingbat

Supreme Mariner
Joined
Nov 20, 2001
Messages
16,313
Re: Fishfinder: Color Vs Black and White

Would you buy a black and white TV? Why not? Same reason you want a color sonar. ;)
 

John_S

Rear Admiral
Joined
Jun 21, 2004
Messages
4,269
Re: Fishfinder: Color Vs Black and White

Color screens of equal pixel density, are easier to read/view, than a grayscale. Even a lower res color can be easier to read than a higher B&W. If you are looking into a portable where you will not have recharging capabilities, the B&W will conserve the battery longer.

High pixel density might be important if you deep water fish, such as trolling with down riggers, saltwater, etc. If mostly shallow, such as bass fishing, not as important. 320V pixels gives you 1 pixel per inch at 26'.
 

dingbat

Supreme Mariner
Joined
Nov 20, 2001
Messages
16,313
Re: Fishfinder: Color Vs Black and White

High pixel density might be important if you deep water fish, such as trolling with down riggers, saltwater, etc. If mostly shallow, such as bass fishing, not as important. 320V pixels gives you 1 pixel per inch at 26'.

Screen resolution is irreverent when dealing with digital signal processors. The data is processed in ?real space? then scaled to fit the screen according to a set of display parameters. Since the display can be scaled to suit, the display resolution has no bearing on target sizing.

Target selection and masking is a function of the detection algorithm. Unfortunately very few FF manufactures advertise their target resolution which is the real standard of sonar performance. Heck, some manufactures still insist on advertising their sounder output in Peak Power Watts instead of the industry standard RMS :rolleyes:
 

John_S

Rear Admiral
Joined
Jun 21, 2004
Messages
4,269
Re: Fishfinder: Color Vs Black and White

Just about all DSP's are capable of higher resolution than any common screen size. As you say, the settings are controlled in the firmware. My point was, while most people believe higher is better, lower can be sufficient for many applications. Many fishfinders display arches that are significantly larger the actual fish. I got by with 160V for years.
 

dingbat

Supreme Mariner
Joined
Nov 20, 2001
Messages
16,313
Re: Fishfinder: Color Vs Black and White

Just about all DSP's are capable of higher resolution than any common screen size. As you say, the settings are controlled in the firmware. My point was, while most people believe higher is better, lower can be sufficient for many applications. Many fishfinders display arches that are significantly larger the actual fish. I got by with 160V for years.

A Digital Signal Processor has nothing to do with screen resolution. A DSP sole function is to crunch the numbers in the algorithm and pass the data to the various processing centers for futher processing. The screen's characteristics is the sole domain of the video processing unit.

As far as the fish arches are concerned, those larger than life fish arches are nothing more than fish ID symbols by some of the FF manufactures.
 
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