resizing photos for Quark-methods

[skinlab]

Wich is the best way (and the way who gives the best result) for resizing photos for Quark?Should I resize the photos in Photoshop or do I have other way to do that?(someone told me that I can do that operation in Quark).
Please help and don't laugh I'm new with Quark.

 

[blueark]

Photoshop, ideally, because it will change the actual image data to suit the new size.

If the image is to be reduced, you won't usually notice any difference between Quark and Photoshop, but using photoshop will result in smaller files. If you need to enlarge the image, neither package will work well, but photoshop will at least try to interpolate the missing data. If you are enlarging screen shots, or other graphics that you want to see the actual pixels, then Quark is fine.

To calculate the resolution an image should be in Photoshop, import it into Quark and size it the way you want. Now multiply the ideal resolution by the percentage enlargement/reduction in Quark. For example, if it's reduced to 60% in Quark, and you want to output at 300dpi, then 300 * 60% = 180dpi. Go into Photoshop, go to Image Size, make sure 'Resample Image' is checked, and change the resolution to 180 dpi. Update the image in Quark. Doing it this way saves you having to work out what dimensions an image should be at 300 dpi, but the result is the same.

 

[skinlab]

Thanks blueark!

 

[MyFavoriteLetterIsB]

I have also found that my images look acceptable if i enlarge up to 130 percent (for a 300dpi image) in quark. If i have to go larger, then i use photoshop.

B

 

[thombathe]

I always use the 10 20 rule when sending to a rip.
over 10% enlargment or 20% reduction scale in photoshop.
This insures a good output. If its a low res image that must be reduced let Quark do it a 150 dpi image reduced in QK at 50% the dpi will double.
thom

The longest jounney starts with the first step.

http://www.thombathe.com

 

[twentyfour]

Resizing method: Although I generally agree with blueark, I have to say that his method sounds somewhat complicated. I use a much easier way: Import the picture into Quark, resize it to the size you want, then go back to PS and resize it their by leaving the resolution at 300 dpi, but changing the size by using the same percentage (X and Y!) as you have in Quark. Then go back to Quark, update the picture and set the scale to 100% (X and Y). It will leave the picture in exactly the same position as before.

Scaling: Yes, it's right, you should not enlarge are reduce more than 30% in Quark. If you go higher or lower than that, it will result in blurry pictures. If you need to enlarge a picture more than 30%, the best way is to rescan it in the right size (if you have the originals). If you need to reduce by more than 30% follow the procedure mentioned above, but then you may want to sharpen the image using the "Unsharp Mask" command. This will avoid you get a picture that is too blurry.

 

[blueark]

The only problem with getting physical dimensions from Quark, however, is that images do not always fill a picture box. For example, if your picture box is 100x100mm, and it's cropping an image that's 200x200mm after scaling, then resizing it to 100x100mm @ 300dpi in Photoshop is going to give you an incorrect size when it's reimported. That's the main reason I use percentages instead.

However, if you're sure the image fits the box exactly, then it is easier to specify dimensions. Personally, I like to leave a little bit extra on my images so I have the choice to alter the cropping in Quark later if I need to.