Converting 72DPI Screenshots to 300DPI

I'm trying to print some computer screenshots and make them look as good as possible.  I've found a few posts on the Internet that talk about using Photoshop to convert a 72 DPI graphic to 300 DPI withOUT resampling the image, resulting in an image that is smaller, but still quite sharp.

Is there any way to do this in CorelDraw or PhotoPaint?

Thanks!

Hoggy

HoggyB:

I'm trying to print some computer screenshots

To begin with, this is something one shouldnt do to begin with.

Unfortunatly I have had many magazine clients sending me 72 dpi/ppi resolution photos for using in a collage/mixed media illustration. I dont like it. Period. And I useally get them to understand to send me real quality photos.

There is no problem to resample 72 to 300. You just do it.

BUT... sorry, but you have to use the word resample. Thats what it means. Resample, Resave, readjust, remake, what have you. So stick to the word Resample. Because, thats the word you will find in Photo-Paint. Image>Resample. In Resample you write 300 dpi, and there you will se instantly in the Resample dialog the new size, before you click OK.

For your Computer screenshots, there is a practise to Resample a 72 to 300 dpi, which is that you have to resample by 10% at a time. Not 100% at once.

But in your example Maybe the brutal 100% straight from the hip 72 into 300 dpi will work.Who knows.  Make a print out on something to see how the result will be. Or almost how it will be. And remember, the computer screenshots are really bad quality.

There is however another thing you could also try, and that have worked once for me, when I had to use screenshots of CorelDRAW Graphics Suite for an article I wrote about illustration in general. I used Corel CAPTURE. You set the resolution to 300. For me it actually did work. But remember the images in print was really small in size in centimeters. You have Corel CAPTURE in Program>CorelDRAW Graphics Suite>Corel CAPTURE

Hoggy,

A screenshot has a set number of pixels. The same number of pixels it was on
the screen. Sure, you can change the resolution of the picture, but do NOT
change the number of pixels.

I shoot thousands of screenshots a year and I've never once had to
"resample" then to any particular dpi as it would do nothing to improve the
quality.

HoggyB:

onvert a 72 DPI graphic to 300 DPI withOUT resampling the image, resulting in an image that is smaller, but still quite sharp.

Image > Resample..., check the "Maintain original size" box and change the Resolution to whatever you want. Changing from 72 to 300 dpi this way will not actually change the bitmap, instead it will just make the dpi value higher and the size proportionally smaller. Foster and Stefan explained the rest.

Depends on how big (dimensions) the original screen shot is... and then what dimensions you want to print it at.

I typically use resample in CD or PP and do what I need to do with dpi and size and aspect ratio and all but...

You can import the screenshot into CorelDRAW, click on it, and use the sizing "handles" or edit them in the "size boxes" in the toolbar at the top of your screen... as you do this you can watch the dpi change in the information bar at the bottom of your screen.

And yes, as has been stated already, the PP image editing tools needed are all available directly in CorelDRAW.

I do this every week on a website where I find an image on the Net and then size it to 150px x 150px at 72 dpi for uploading... not for printing but you could use different parameters depending on the original image screen shot quality... and just try it as has been suggested to judge for yourself whether the results are good enough for your purposes.

 

  "party on 'Garth' "

ps: I don't think you need to do this judging from your post but... on occasion I've used a special image processing program that "resamples and sharpens" using a sophisticated sampling algorithm not  used in the  Commercial programs according to their product info... I was able to see the difference on their samples and some I tried using my own images and image processing software. I'll look for it on my Town office computer tomorrow. I don't normally have to upsize images but the one case where I made a large poster (about 24 x 36) from a web image, of a cup of steaming hot coffee, it came in handy to get the best result possible within the time and economic budget. The original web image was quite large to begin with and the technical requirements for the image weren't very strenuous... but it still worked out very well for its intended purpose.