Page 18 - CC2019_PS_Look_Inside

7. Check the Resample option at the bottom of the dialog box (if necessary).
Th e options in this dialog box remember the last-used choices. Th e Resample option Note:
might already be checked in your dialog box.
When the Resample op-
Resampling means maintaining the existing resolution in the new image dimensions; tion is checked, you can
in other words, you are either adding or deleting pixels to the existing image. When use the attached menu
this option is turned on, you can change the dimensions of an image without aff ecting
the resolution, or you can change the resolution of an image (useful for removing to tell Photoshop how
excess resolution or downsampling) without aff ecting the image size. to generate extra pixel
data when increasing
8. Change the Resolution fi eld to 300 pixels/inch. the image size, or which
pixels to discard when
When you change the resolution with resampling turned on, you do not change the reducing the image
fi le’s physical size. To achieve 300-ppi resolution at the new size, Photoshop needs to
add a huge number of pixels to the image. You can see at the top of the dialog box size. Each option also
that this change would increase the total number of pixels from 4943 1 3300 to includes a parenthetical
20596 1 13750. notation about when
it is best used (enlarge-
You can also see that changing the resolution of an image without aff ecting its physical ment, smooth gradients,
dimensions would have a signifi cant impact on the fi le size. Changing the resolution etc.).
to 300 ppi at the current size would increase the fi le size to over 810 megabytes.

When Resample is
checked, changing the
Resolution value adds
or removes pixels.

Higher resolution means larger fi le sizes, which translates to longer processing time
for printing, or longer download time over the Internet. When you scale an image
to a smaller size, simply resizing can produce fi les with far greater eff ective resolution
than you need. Resampling allows you to reduce physical size without increasing the
resolution, resulting in a smaller fi le size.

Th e caveat is that once you delete pixels, they are gone. If you later try to re-enlarge the
smaller image, you will not achieve the same quality as the original fi le before it was
reduced. You should save reduced images as copies instead of overwriting the originals.
9. Press Option/Alt and click the Reset button to restore the original image
dimensions in the dialog box.
In many Photoshop dialog boxes, pressing the Option/Alt key changes the Cancel
button to Reset. You can click the Reset button to restore the original values that
existed when you opened the dialog box.

Pressing Option/Alt
changes the Cancel
button to Reset.

30 Project 1: Music CD Artwork