Originally Posted by bewitched
Another thing to consider is the brightness - the one you linked to says brightness = 400 - which I'm assuming is 400cd/m2. Which is good for inside use, but would be difficult to see if outside on a bright day - you're need to have at least 800cd/m2 for that. And that unfortunately comes at a cost premium
And 800 is for "daylight viewable". For "sunlight viewable" you need more than that.
Many sites will say a screen is daylight viewable at 300-400 nits (same as cd/m2), but they are talking about a room with an uncovered window.
On one site I see marine
displays for sale
with the following ratings:
- Pilot House 250-300
- Daylight 700-800
- Sunlight 1100-1150
- Super-Sunlight 1450-1600
Source --> http://www.highseastechnology.com/files/35888217.pdf
And due to the way manufacturers like to rate things, I'd go up at least one level from what they recommend. A 300 in a pilot house might be fine if your pilot house has dark wood and all side/rear windows have black-out shades. In a sailboat at a nav desk, with no direct sunlight hitting the nav station (not just the screen, but anywhere in the nav station) it would probably work just fine.
From my research
a few years ago, I think I remember deciding 1000+ for daylight, and 1500+ for sunlight (compensating for manufacturer optimism).
For my boat, with 360 degree large windows (sides and rear tinted), I figured I need the daylight in the cabin
and sunlight on the flybridge.
Really, you have to see a screen in actual conditions, like with bright sunlight directly on the screen, to really know how it performs. THEN, the technology used makes a difference, too.
The technology has changed since I last researched, so I can't advise there. But, considering the cost, when I get ready to get a display for my boat, you can bet that before I buy I will make sure I can view that model, or one with as close to the same technology/nits as possible, in actual conditions. The difference between daylight and sunlight can almost double the price