WEBVTT

00:00:00.320 --> 00:00:07.040
resolution is often the only spec quoted when referring to the finess of a

00:00:05.040 --> 00:00:12.799
digital image but there's actually much more to it than that a 5in 1280x 720

00:00:10.719 --> 00:00:18.720
image will look sharp and crisp on your phone but if you projected a 720p image

00:00:16.119 --> 00:00:23.760
in a movie theater it would look horrible so that my friends is where

00:00:21.080 --> 00:00:28.880
pixel density comes in a measure of the resolution that also accounts for the

00:00:26.240 --> 00:00:34.200
size of the screen PPI has become the most common way to denote pixel density

00:00:31.160 --> 00:00:37.239
although pixels per centimeter or PPC

00:00:34.200 --> 00:00:40.039
can also be used to calculate PPI simply

00:00:37.239 --> 00:00:45.079
measure 1 inch diagonally on the screen then draw a line diagonally through them

00:00:42.960 --> 00:00:50.800
and find out how many pixels it intersects with so I heard higher pixel

00:00:47.600 --> 00:00:52.920
density is always better is that right

00:00:50.800 --> 00:00:58.160
well sort of the geek andme wants to say yes bring it on more but in reality it

00:00:55.600 --> 00:01:03.199
requires Advanced display technology and more processing power so it's not always

00:01:00.399 --> 00:01:07.640
practical from a cost and Manufacturing perspective to keep driving up pixel

00:01:05.080 --> 00:01:12.200
density with older devices there was tons of room for improvement diagonal

00:01:09.600 --> 00:01:17.040
lines looked like this and circles even had an ugly staircase effect but this is

00:01:15.080 --> 00:01:21.079
improved in recent years and we've even begun to see displays where the eye

00:01:18.759 --> 00:01:25.000
cannot even pick out the individual pixels on the display once that point is

00:01:23.320 --> 00:01:29.560
reached there's not much benefit to continuing to add cost and complexity to

00:01:27.320 --> 00:01:35.200
manufacturing because most people won't notice anyway Apple's branding for this

00:01:32.680 --> 00:01:40.240
good enough density concept is Retina but to determine if a display is Retina

00:01:38.159 --> 00:01:45.159
there's one last thing to consider how far away are you going to be from the

00:01:42.360 --> 00:01:50.479
display is this rea.com has a handy little tool for this and according to

00:01:46.680 --> 00:01:53.040
their calculator a 55 in 1080 PTV will

00:01:50.479 --> 00:01:59.439
have the same perceived pixel density from 7 ft away as this 4.7 in 1080P

00:01:56.560 --> 00:02:04.640
phone does from 7 in away but there's more to a great display than how many

00:02:01.479 --> 00:02:07.119
pixels it has of course contrast color

00:02:04.640 --> 00:02:11.640
accuracy and pixel response times impact the viewing experience tremendously and

00:02:09.399 --> 00:02:15.879
different display types can even affect other things like the battery life of

00:02:13.319 --> 00:02:21.519
your device improving power efficiency panel Technologies also play a large

00:02:18.640 --> 00:02:27.440
role for example while both the Samsung Galaxy S4 and the HTC1 have 1080p

00:02:24.360 --> 00:02:30.720
displays the S4 uses a pentile matrix

00:02:27.440 --> 00:02:33.160
Amo LED display that has fewer dots on

00:02:30.720 --> 00:02:37.640
it overall while the one uses a more standard LCD display with RGB sub pixels

00:02:36.280 --> 00:02:41.480
click the link in the video description to learn more about this speaking of

00:02:40.120 --> 00:02:46.560
links in the video description our sponsor for this episode is audible.com

00:02:43.599 --> 00:02:50.440
head over to audible.com tequ to sign up and get a free Audi book now I read the

00:02:48.959 --> 00:02:54.159
first one a few years ago but I was browsing customer favorites today and

00:02:52.000 --> 00:02:58.080
saw that there's a prequel to Pride and Prejudice and Zombies by Jane Austin and

00:02:56.000 --> 00:03:02.200
Steve Hawkin Smith you might wonder how a book released in 2010 could have been

00:03:00.360 --> 00:03:08.400
co-authored by Jane Austin to which I would reply the zombies anyway guys

00:03:06.040 --> 00:03:11.599
audible.com tewi for your free audiobook today there's tons of selection if you

00:03:09.840 --> 00:03:16.000
want something fun and light to listen to like Pride and Prejudice and Zombies

00:03:13.920 --> 00:03:19.000
or for something more serious as well don't forget to subscribe to Tech

00:03:17.239 --> 00:03:24.879
quickie for more fastest possibles like this like this video and leave a comment

00:03:20.799 --> 00:03:24.879
for us if you have any feedback