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How do I change the dpi/ppi on the Canon 50D?

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  • hollygordonp Feb 08, 2010

    So, if I want to prepare a digital photo for print that was shot in RAW at 72 ppi (not dpi, I was using the wrong term), then what is the best way to process the photo? Just change the ppi to 150 or 300 or change the l x w? Or what?

    Thanks,

    Holly


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There are only preset values available in your camera you cannot select custom values. For information about changing the pixel count please refer to page 60 of the manual below.
http://gdlp01.c-wss.com/gds/1/0300001591/01/eos50d-h-en.pdf

Sai.

Posted on Feb 08, 2010

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Hi,

The only thing that DPI will change is the resolution of a printed photo, not anything on your computer screen.

To answer your question, NO, there isn't a setting on the camera that will change the DPI of your photos. However, your photo processing app (Photoshop, Lightroom, I believe DPP?) can change that. But changing the DPI won't affect the number of pixels in your photo, nor arrange them in any specific way. It only affects how the printer deals with the information it receives, and/or the way your photo app determines the dimensions of the photo—i.e. the higher the DPI, the smaller the length and width of the photo.

Okay, looking at your post again, it looks like you're talking about a printed photo when you say they look pixellated.

So yeah. If you're adjusting the dimensions of the photo in your processing app by using LxW modifications (i.e. you're changing the dimensions to 8"x10", not 2400px x 3000px), and it's set to 72dpi, you WILL get pixellated photos. 72dpi is designed for screen resolution (though in truth, most monitors are manufactured at a 96dpi pitch). But what I said before still holds true: your camera isn't what sets the resolution; the processing app does.

let me know, if needed further assistance.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

Posted on Feb 06, 2010

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Posted on Jan 02, 2017

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1 Answer

Where on my menu do I change the dpi settings on my Canon EOS50D?


You don't.
DPI (dots per inch) is an output specification used when printing a photo, not when taking one.
Any photo editing program will let you change it, but why bother? Instead, simply specify the size of the print you want and the program will compute the required DPI.

Feb 08, 2017 | Cannon EOS 50D Digital Camera

Tip

LPI, PPI,DPI conversions


Here is a conversion chart for DPI (Dots per inch) to LPI (Lines per inch) or PPI (Pixels per inch)

180 DPI................31 lines/inch or 68 PPI
360 DPI................63 lines/inch or 138 PPI
720 DPI................127 lines/inch or 280 PPI
1440 DPI..............255 lines/inch or 561 PPI
2880 DPI..................510 lines/inch or 1122 PPI

If you plan to enlarge your image, it is better to enlarge it when you're scanning rather than in your application. Each time you modify
an image, you lose some quality. Keep in mind when you enlarge a small photo, such as a 35 mm slide or wallet-size photo, you'll need
to scan at a high enough resolution to retain your image quality, but not so high that your file size is too large to be efficient. You must
manually adjust the resolution (dpi) to maintain the same image quality when you resize your image. For example, if you have a 300
dpi 2 x 2-inch image that you want to enlarge to 4 x 4 (a factor of 200%), increase the Scale setting to 200% or change the resolution to 600 dpi.

on Jul 19, 2008 | Epson Perfection V200 Flatbed Scanner

1 Answer

Why possible is 300 dpi printing images and text matter


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 it It'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 it Pixels 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!


Oct 07, 2014 | Canon LASER SHOT LBP-2900 Printer

1 Answer

Can I get a 300 dpi still shot using the Canon S5 IS?


DPI is short for Dots Per Inch and it actually refers to printer dots per inch. These days, when used in photo software, it means PPI, which are pixels per inch. DPI and PPI are two different things, yet often DPI is used when PPI is meant, so read its usage in context.

Dpi (actually ppi) is only important in case of printing. When you open a picture in Photoshop a dpi-number is mentioned. Don't pay attention to it. It doesn't tell you anything, you can change it in any number you want, it doesn't change anything of the picture. But beware: you have to uncheck the resample-box! Resampling means calculating a new amount of pixels. The moment resampling is off, you can change the dpi-number, the according printing-measure is given. It also works the other way around: change the printing-measure, the dpi-number of the picture will be shown.

Jul 30, 2014 | Canon Cameras

1 Answer

I need to take a 300 ppi/dpi photo


Hello,

Nice camera :) However it "only" takes pictures up to 180 ppi. You can't change it.

It might be easier to take your pictures as normal and then change their resolution to 300ppi in photo processing software like e.g. photoshop / photoshop elements (commercial) or gimp or irfanview (free).

NB, while it's not going to help here much, you might find this reading interesting:
http://www.dpiphoto.eu/dpi.htm

Hope this helps,

Raf

Nov 07, 2009 | Canon Cameras

2 Answers

How do I set dpi on canon 50d digital slr to the highest resolutioin?


You'll need to shoot RAW. Then in the conversion from RAW to TIFF or JPEG you can specify the DPI. You can do this in Photoshop or in Digital Photo Professional that probably came with your camera.

DPI and Pixel Resolutions are in two different realms, though somewhat related, they are independant. Your camera produces files at the maximum resolution of 4272 x 2848. At 72 dpi, your print will roughly be 60"x40". At 300 dpi, 14.25"x9.493". At 600dpi, 7.12"x4.747", at 1200dpi 3.56"x2.373". Think of cameras in terms of pixel resolution and printers in terms of dpi. When files are inserted into layouts, the embedded dpi value is used. You just need to change the embedded value to match up with the print size you desire. Obviously, if you want a 120"x80" print at 300dpi... you've got the wrong camera. :) Source(s): This is a good site for those interested in more technical details:
http://www.scantips.com/

Jul 31, 2009 | Canon EOS 50D 15.1MP Digital SLR Camera...

2 Answers

180 dpi


The dpi-value of a camera is meaningless. It is a fictitious number.

A photo has no dpi, only pixels.
Only prints has a dpi/ppi.

See my article:
Misunderstandings about dpi - http://www.dpiphoto.eu/dpi.htm
(Also in Dutch - see homepage)



May 16, 2008 | Canon PowerShot SD750 / IXUS 75 Digital...

1 Answer

CHANGE DPI


Yes, every picture has a resolution of 72 ppi. This can be changed later in an image editing program on the computer.

Nov 25, 2007 | Panasonic Lumix DMC-FZ7 Digital Camera

1 Answer

Resolution of Stiil Photographs.


the resolutiion dpi has little to do with the camera, its more about printing/displaying - that is just the screen display resolution. you can change that to 300 PPI (DPI) in most imaging applications. the important thing is the pixels you have length and width so 1000 pixels x 1000 pixels is the key to this whats the max pixels of the camera - that would give you the resolution. now to print an image onto paper the acceoted standard for top quality is 300 PPI so 1000 pixels width divided by 300 pixels per inch ppi = 3.3 so you can print at 3.3 inches. Now you may even be able to get away with as low as 180 PPI on some prints and depending on how far away it will be viewed - so this needs to be played with. - can you reply here - with a comment and tell us 1) how many pixels you have 2) what image editing software you are using 3) how big you would like to print

Apr 17, 2007 | Sony Handycam DCR-TRV350 Digital Camcorder

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