Hi Marc,
First of all, sorry if I tell you stuff you already know.
Are the images saved as jpeg, tif or eps? Best format for Quark is tif. If printing to an inkjet printer, usually I can get by resolution-wise with 150 dpi printing the image at 100%.
If you download the images to your computer, open an image and save it again as a jpeg, the jpeg format will add weird artifacts to the file. Every time you resave as a jpeg, more artifacts are thrown in. These may be what you are seeing.
As a rule of thumb, when I download images to my computer, I open an image file with Photoshop and immediately (without any changes to the original file) save the image as a tif or Photoshop psd format, using SAVE AS and giving it a different name. I then use the copy to work from. That way, I always have the original image to go back to in case I do something with filters and the copy that I can't undo. And tif is a lossless compression program, so it doesn't throw artifacts into the file.
As for using Quark to adjust the size. That sometimes works, and sometimes doesn't work well at all. In fact, if you reduce a large format image in Quark, for example, to 50%, you will get unexpected results--usually a darkening or compressed image.
It's better to resize the image in Photoshop at the dimensions you are going to use at 100%, save it as a tif, then import it into Quark at 100% (for example, a 4x6 image at 150 dpi in Photoshop to be used as a 4x6 image in Quark).
Hope this helps.
First of all, sorry if I tell you stuff you already know.
Are the images saved as jpeg, tif or eps? Best format for Quark is tif. If printing to an inkjet printer, usually I can get by resolution-wise with 150 dpi printing the image at 100%.
If you download the images to your computer, open an image and save it again as a jpeg, the jpeg format will add weird artifacts to the file. Every time you resave as a jpeg, more artifacts are thrown in. These may be what you are seeing.
As a rule of thumb, when I download images to my computer, I open an image file with Photoshop and immediately (without any changes to the original file) save the image as a tif or Photoshop psd format, using SAVE AS and giving it a different name. I then use the copy to work from. That way, I always have the original image to go back to in case I do something with filters and the copy that I can't undo. And tif is a lossless compression program, so it doesn't throw artifacts into the file.
As for using Quark to adjust the size. That sometimes works, and sometimes doesn't work well at all. In fact, if you reduce a large format image in Quark, for example, to 50%, you will get unexpected results--usually a darkening or compressed image.
It's better to resize the image in Photoshop at the dimensions you are going to use at 100%, save it as a tif, then import it into Quark at 100% (for example, a 4x6 image at 150 dpi in Photoshop to be used as a 4x6 image in Quark).
Hope this helps.
