Resolution Eye
what is the resolution of human eye ?
Consider a view in front of you that is 90 degrees by 90 degrees, like looking through an open window at a scene. The number of pixels would be 90 degrees * 60 arc-minutes/degree * 1/0.3 * 90 * 60 * 1/0.3 = 324,000,000 pixels (324 megapixels).
At any one moment, you actually do not perceive that many pixels, but your eye moves around the scene to see all the detail you want. But the human eye really sees a larger field of view, close to 180 degrees. Let’s be conservative and use 120 degrees for the field of view.
Then we would see 120 * 120 * 60 * 60 / (0.3 * 0.3) = 576 megapixels.
And
In good light, you can distinguish two fine lines if they are seperate by at least 0.6 arc-minutes (0.01.Degrees).
This gives an equivilant pixel size of 0.3 arc-minutes. If you take a conservative 120 degrees as your horizontal field of view and 60 degrees in the vertical plane, this translates to ...
576 megapixels of available image data.
Curiously - as a counterpoint to this - most people cannot distinguish the difference in quality between a 300dpi and a 150dpi photo when printed at 6x4", when viewed at normal viewing distances.
So: although the human eye and brain when combined can resolve massive amounts of data, for imaging purposes, 150dpi output is more than enough to provide adequate data for us to accept the result as photographic quality.
women have more cones and men have more rods -
Eye Catching web design and development is more than just coding. You need to focus on what visitors experience on your site. Your first goal is to make sure visitor stays on your site for some time and comes back again and again. Most websites are there to make money, with few exceptions here and there. Its absolutely true that you need quality content and actually plenty of it so that you get organic search engine traffic. But even then, you want them to stay on your site for long and refer people through social networks.
Here are the tips that you should use in order to make your visitors experience memorable.
1) Make sure your navigation from home page to other pages is simple enough. Also its possible that your visitor will not always land on your home page so make sure you organize each page like home page.
2) More than 80% visitors use 1024x768 screen resolution, so its best to optimize your page to that size. A three column page makes a good composition, but in order to be sure your sales propositions are clear to the other 20% of visitors using the smaller screen resolution, it's best that your sales propositions be placed in the left hand column. For example, if you have an e-newsletter, place this offer in the left hand column.
3) Your visitor will not land on home page everytime, so a good web design and development plan means that you must place your offer for your e-zine in the same position on every page. You'll increase your readership exponentially, since every visitor will spot your offer.
4) Next is scrolling factor. The important message or value proposition should be visible in the top portion of the page. If visitor has to scroll to find what site is about, you lost him. Ideally show all important messages on left hand or middle column.
5) Last but not least, Let's say you've got a home improvement website. One page contains an article on how to install dimmer switch. Your web design and development plan needs to address the question of which of your other pages might be most relevant to that reader, and place links to those other pages in an easily found location. Even search engines likes good internal linking.
Incorporate these tips into your initial web design and development plan and watch your traffic grow.
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