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What is DPI PPI and Why Do They Matter
To some extent, we're all photographers these days. With a camera on every phone and digital SLRs coming down in price, we've all got a trove of photos waiting to be shared. When it comes time to share online, print, or email our favorite images, many are unsure about how to set the image's resolution...
If you've found yourself in this spot, don't worry - dots per inch (shortened to DPI from here on out) is a concept that even confounds some professional graphic artists. Here's a primer DPI so you can stop worrying about technology and start sharing your photos. Getting started
Digital photos are comprised of pixels, much like the individual boxes on a sheet of graph paper. DPI tells you how small those pixels will be when the image is printed. For example, "300 dots per inch" means that 300 pixels fit across each inch. If your photo is 600 pixels tall by 900 pixels wide, for example, it would come out at 2" x 3" inches if you were to print at 300 DPI. Keep in mind that most digital photos are several thousand pixels in either direction, but for the sake of simplicity, we'll use the more manageable 600 x 900 pixels. Separating pixels from presentation
It's important to separate DPI from the raw pixel dimensions, and this is where even the pros slip up. DPI is not an indication of image quality or clarity. When you print that 600 x 900 pixel image at 300DPI, it'll likely look pretty sharp, because every inch is densely packed with pixels.
Now imagine printing that same image, with the same number of pixels, at a mere 30 DPI. As each inch would have only 30 pixels across, the density drops immensely and the image prints much larger: 20" by 30". What was once sharp now appears blurry, because each individual pixel is now ten times larger than before. By separating DPI from actual pixel count, we can understand that raising DPI doesn't magically improve a photo. DPI simply takes the same data (the original pixels) and alters how we'll view them. Pin itIt's all about context
Another factor is viewing distance. Just think of the eye chart at your doctor's office. If you're a bit nearsighted, the tiny letters at the bottom are illegible specks, while the letters at the top are easily discerned. In actuality, each tiny letter may be half an inch tall, but the distance makes them seem microscopic. Now consider our 600 by 900 pixel image. When we printed it at 30 DPI, the giant pixels made it look blurry. Were we to look at it across the doctor's office long hallway, however, it may look just as sharp as the 300 DPI print did in our hands. This illustrates how DPI is more about context than quality.
Pin itPixels Per Inch
You'll notice I've been talking about DPI in relation to printing only. This is because while printers can produce a variety of DPI settings, a computer display's resolution is fixed - its pixel density is part of the physical hardware, and cannot be altered. When talking about displays instead of print, most use the term PPI, or "pixels per inch."
If you intend to put your 600 x 900 pixel image online, switching the resolution to 30, 300, or 3000 PPI is completely arbitrary, because the computer display can't change its density. As modern desktop displays usually have a PPI in the low 100s, the 600 x 900 pixel image will appear around 6" by 9" (mobile displays may be much higher). Of course, your web browser could display the image smaller if need be, but it will do so by averaging and eliminating pixels, not squeezing them to be physically smaller. This is why it's always important to keep your end goal in mind when working with images. In summary:
• An image is defined by its pixel dimensions - # pixels tall by # pixels wide
• DPI/PPI determines the scale and pixel density at which image will be displayed
• What appears blurry from close up may look fine at a distance, so consider how an image will be seen
• Printers can produce a range of DPIs, while displays have fixed resolution
Whether you're a blogger dealing with an upload limit or are just trying to print a photo to hang on the wall, understanding DPI/PPI can go a long way. I hope these tips help you feel more in control of your images and how you share them with the world!
Liquid Crystal Display (LCD) screens use less energy and display a clearer picture than the Cathode Ray Tube (CRT) displays that preceded them. These new LCD screens now dominate the computer monitor market. From time to time, however, pixels can become stuck and a green line can display on the screen. Removing this line is sometimes possible without sending the screen to the manufacturer for expensive repair.
You can increase the size of text by pressing control + or - buttons press control button first. Also there is zoom in the tools section and also you can increase the size of text in the control panel or the web page under tools sections of most browsers. If we new the browser or what you text is small in or even if it was small every where you can change the resolution size of your Windows. Win 7 you can incease text by going to control panel click on display once there go to where it says increase your text size. Not sure what your operating system is either. So assuming it is Win 7 I hope that this assists you. John
Procedures of acquiring high definition pixel quality
1.power on the computer wait until the desktop of icons display after booting has been completed
2. using the arrow of the mouse or pointer to an area on the desktop without icons, right click to display a prompt list
3. locate the appearance and setting prompt on the list.
4. a click to provide the options to increase the picture quality termed pixels
5. LCD monitors could produce several thousand pixels, select a choice nearly approapiate for reasons explained
a. the highest selection of picture quality provided on the list for a monitor powered by a separate computer with extremely dense graphics like known for modern gaming could cause monitor to blank out as precaution.
b. when selecting a picture quality from the list provided on the appearance settings area after a right click on the desktop, be sure about the compartibility of the monitor and computer unit, explained
c. most modern retail provide system units with higest definition pixel capabilites for several funcitons as gaming graphic and design, connect such a unit to an old monitor would display low quality definition pictures. However, that could be fixed by adjusting the appearance setting only with caution not to select the most highest available from the list of pixels.
right click on the screen then select properties..while on display properties click settings..under the screen resolution, adjust the slider bar to the right until the pixel is 1024x768..adjusting to the right decreases the pixel and to the left increases the pixel.. under the color quality select highest (32 bit)..click apply then OK..when prompted to keep the settings click OK..
the resolution depends on the VGA card you have & the display or monitor you have. if you are given by default some modes those are the best suitable for viewing. any way can if you can let me know the motherboard model, VGA card model & Monitor you are using. i might be able to give you some help
The bright spots which you are seeing my be the failed pixels on the screen.
Once connect the external monitor to the notebook and check the display on the external display.
If you don't have external monitor, then restart the notebook and Press F10 or F2 key to Enter into BIOS. If the screen is same with bright pixels in the BIOS screen, then the it is confirmed the issues is with bad pixels.
If your notebook is under warranty, then HP will arrange for mail-in.
Note: There is Pixel policy from HP, go through thebelow URL: