I sometimes encounter the production of outdoor advertising design, will use large size pictures, which software is convenient? Illustrator or CorelDRAW?
Author:Ma Chenchen Time:2021-10-01 08:04 Browse(371)
I suggest you use Photoshop to do it. Of course, you can choose AI or CDR. You don't have to worry about the size. More often, you should consider the resolution. Next, I'll introduce you to the basic knowledge of spray painting
I suggest you use Photoshop. Of course, you can choose AI or CDR. You don't have to worry about the size. More often, you need to consider the resolution. Next, I'd like to introduce you to the basic knowledge of inkjet photography.
image resolution:

I sometimes encounter the production of outdoor advertising design, will use large size pictures, which software is convenient? Illustrator or CorelDRAW?

inkjet files are often very large. If you still use the printing resolution for large images, the computer can't stand it, And it's not necessary.
for example, Photoshop can't draw more than 30000 pixels.
but there is no dead standard for the resolution of spray painting.
the following is the resolution used when making spray painting images of different sizes, for example (the image area is square meters, you can draw according to the following requirements):
more than 400 square meters (resolution: 10.16dpi) 4pixel / cm
200-400 square meters (resolution: 12.7dpi) 5pixel / cm
120-200 square meters (resolution: 15.24 DPI) 6 pixel / cm
80-100 square meters (resolution: 17.78 DPI) 7 pixel / cm
60-80 square meters (resolution: 20.32 DPI) 8 pixel / cm
30-60m2 (resolution: 22.86dpi) 9pixel / cm
20-30 square meters (resolution: 30.48 DPI) 12pixel / cm
15 pixel / cm below 20 square meters (resolution: 38.1 DPI or above)
note: when the image splicing is affected, the file needs to be cut. When pixel / inch unit is an integer, the error will appear,When the pixel / cm unit is an integer, it is very accurate, because we are perfectionists.

in general, the photo resolution is 72dpi.
if the file is too large (for example, in the Photoshop menu, when the image / image size shows the actual size, the file size exceeds 400m), the resolution can be reduced appropriately, The file can be controlled within 400 megabytes.

storage format requirements:
inkjet and photo images are best stored in. TIF format.
If LZW compression format is adopted, it is a good way.
it can not only reduce the space.
save the file transmission bandwidth, And there is no damage to the quality of the picture.

when CorelDRAW is exported, attention should be paid to:
when CorelDRAW software exports the dot matrix diagram,
it should not exceed 10000 pixels, otherwise it will flatten the picture.
at this time, it is necessary to cut the picture.
cutting a piece should not exceed 10000 pixels, It only needs to cut three pieces at most.
because it is more than 30000 pixels.
Photoshop can't process the file.

color mode requirements:
cmky mode is used uniformly for inkjet printing.
RGB mode is forbidden.
because all the modes supported by inkjet printer are CMYK mode.
when drawing in RGB mode and then changing to CMYK mode, the color will change, the most obvious color is yellow, When the RBG mode turns yellow to CMYK mode, the yellow will have cyan inside, so the yellow will turn green,Other colors also change, because the imaging principles of ink and display screen are completely different, This determines that RGB mode can not be completely displayed in CMYK mode.
therefore, CMYK mode should be used as far as possible for inkjet and photo making.
therefore, CMYK standard should be followed when drawing.
cmky mode should also be used for photo making.
in addition, if there are special requirements for color (such as standard color, etc.).
we need to provide color proofs for us, and we will adjust the color of the picture, Close to the requirements of the black part of the sample:
monochrome black (C=0, M=0, y=0, k=100) is strictly prohibited in inkjet and photo, and must be composed of C, m, y and K.
for example, the default black of Photoshop (C=75, M=68, y=67, k=90).
otherwise, the black part of the inkjet will appear crosswalk, and the monochrome black will be gray, It will affect the overall effect.
if it is a large size, the resolution will be smaller.
set it to 30dpi in Photoshop. If you want to use illustrator, you can reduce it by 10 times,
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