resolution is often the only spec quoted when referring to the finess of a
digital image but there's actually much more to it than that a 5in 1280x 720
image will look sharp and crisp on your phone but if you projected a 720p image
in a movie theater it would look horrible so that my friends is where
pixel density comes in a measure of the resolution that also accounts for the
size of the screen PPI has become the most common way to denote pixel density
although pixels per centimeter or PPC
can also be used to calculate PPI simply
measure 1 inch diagonally on the screen then draw a line diagonally through them
and find out how many pixels it intersects with so I heard higher pixel
density is always better is that right
well sort of the geek andme wants to say yes bring it on more but in reality it
requires Advanced display technology and more processing power so it's not always
practical from a cost and Manufacturing perspective to keep driving up pixel
density with older devices there was tons of room for improvement diagonal
lines looked like this and circles even had an ugly staircase effect but this is
improved in recent years and we've even begun to see displays where the eye
cannot even pick out the individual pixels on the display once that point is
reached there's not much benefit to continuing to add cost and complexity to
manufacturing because most people won't notice anyway Apple's branding for this
good enough density concept is Retina but to determine if a display is Retina
there's one last thing to consider how far away are you going to be from the
display is this rea.com has a handy little tool for this and according to
their calculator a 55 in 1080 PTV will
have the same perceived pixel density from 7 ft away as this 4.7 in 1080P
phone does from 7 in away but there's more to a great display than how many
pixels it has of course contrast color
accuracy and pixel response times impact the viewing experience tremendously and
different display types can even affect other things like the battery life of
your device improving power efficiency panel Technologies also play a large
role for example while both the Samsung Galaxy S4 and the HTC1 have 1080p
displays the S4 uses a pentile matrix
Amo LED display that has fewer dots on
it overall while the one uses a more standard LCD display with RGB sub pixels
click the link in the video description to learn more about this speaking of
links in the video description our sponsor for this episode is audible.com
head over to audible.com tequ to sign up and get a free Audi book now I read the
first one a few years ago but I was browsing customer favorites today and
saw that there's a prequel to Pride and Prejudice and Zombies by Jane Austin and
Steve Hawkin Smith you might wonder how a book released in 2010 could have been
co-authored by Jane Austin to which I would reply the zombies anyway guys
audible.com tewi for your free audiobook today there's tons of selection if you
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