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bmor
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 Posted: Wed Jun 06, 2007 5:49 am Post subject: determining res of embedded images |
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Some people insist on embedding images in their files. In order to
determine the res of said images I export them to PhotoShop and open
them up at the minimum acceptable resolution and look for pixelation
on screen and off a 100% laser. Kind of a spotty technique but I've
yet to imagine another way. Any thoughts people? |
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Tim Monk
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| Posted: Wed Jun 06, 2007 6:30 am Post subject: Re: determining res of embedded images |
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On 6/5/07 8:49 PM, "bmor" wrote:
| Quote: |
Some people insist on embedding images in their files.
|
And for some people, that's fine. Most, on the other hand, shouldn't even
know that that's an option. ;)
| Quote: |
In order to determine the res of said images I export them to PhotoShop and
open them up at the minimum acceptable resolution and look for pixelation on
screen and off a 100% laser.
|
Okay, this is REALLY bad practice. You should, at the very least, invest in
a plugin for Acrobat like QABOT or PitStop. The whole point of a successful
career in prepress is CYA.
| Quote: |
Kind of a spotty technique but I've yet to imagine another way. Any thoughts
people?
|
Your dilemma has been solved by various companies. I expect Adobe to cover
them all in the very near future.
CYA, dude, or you'll wish you had later...Very little research will get you
above what you already think is the right way to do things. How much money
do you have?
Tim |
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bmor
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| Posted: Wed Jun 06, 2007 8:23 am Post subject: Re: determining res of embedded images |
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On Jun 5, 7:30 pm, Tim Monk <t...@austin.rr.com> wrote:
| Quote: |
On 6/5/07 8:49 PM, "bmor" wrote:
Some people insist on embedding images in their files.
And for some people, that's fine. Most, on the other hand, shouldn't even
know that that's an option. ;)
In order to determine the res of said images I export them to PhotoShop and
open them up at the minimum acceptable resolution and look for pixelation on
screen and off a 100% laser.
Okay, this is REALLY bad practice. You should, at the very least, invest in
a plugin for Acrobat like QABOT or PitStop. The whole point of a successful
career in prepress is CYA.
Kind of a spotty technique but I've yet to imagine another way. Any thoughts
people?
Your dilemma has been solved by various companies. I expect Adobe to cover
them all in the very near future.
CYA, dude, or you'll wish you had later...Very little research will get you
above what you already think is the right way to do things. How much money
do you have?
Tim
|
Hey Tim, These embedded images are always in Illustrator. We are a
screen/digital print shop and do not at this point use a PDF workflow. |
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bmor
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| Posted: Wed Jun 06, 2007 8:24 am Post subject: Re: determining res of embedded images |
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On Jun 5, 7:30 pm, Tim Monk <t...@austin.rr.com> wrote:
| Quote: |
On 6/5/07 8:49 PM, "bmor" wrote:
Some people insist on embedding images in their files.
And for some people, that's fine. Most, on the other hand, shouldn't even
know that that's an option. ;)
In order to determine the res of said images I export them to PhotoShop and
open them up at the minimum acceptable resolution and look for pixelation on
screen and off a 100% laser.
Okay, this is REALLY bad practice. You should, at the very least, invest in
a plugin for Acrobat like QABOT or PitStop. The whole point of a successful
career in prepress is CYA.
Kind of a spotty technique but I've yet to imagine another way. Any thoughts
people?
Your dilemma has been solved by various companies. I expect Adobe to cover
them all in the very near future.
CYA, dude, or you'll wish you had later...Very little research will get you
above what you already think is the right way to do things. How much money
do you have?
Tim
|
what's CYA? |
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John Doherty
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| Posted: Wed Jun 06, 2007 8:40 am Post subject: Re: determining res of embedded images |
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In <1181094578.597178.188230@x35g2000prf.googlegroups.com>, bmor
wrote:
| Quote: |
Some people insist on embedding images in their files. In order to
determine the res of said images I export them to PhotoShop and open
them up at the minimum acceptable resolution and look for pixelation
on screen and off a 100% laser. Kind of a spotty technique but I've
yet to imagine another way. Any thoughts people?
|
You can determine the resolution of images embedded in Illustrator
files with Illustrator's "Document Info" feature, e.g.:
Embedded Images:
Type: CMYK
Bits per Pixel: 32
Channels: 4
Size: 1875K, 600 by 800 pixels
Dimensions: 216 by 288 points
Resolution: 200 by 200 pixels per inch
-- |
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Eric
Guest
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| Posted: Wed Jun 06, 2007 10:38 am Post subject: Re: determining res of embedded images |
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bmor wrote:
| Quote: |
Some people insist on embedding images in their files. In order to
determine the res of said images I export them to PhotoShop and open
them up at the minimum acceptable resolution and look for pixelation
on screen and off a 100% laser. Kind of a spotty technique but I've
yet to imagine another way. Any thoughts people?
|
Determining the res mechanically isn't trivial. You can use some PS/PDF
hacks that hook the bitmap image output and tell you the effective
resolution. However there maybe some vector images at low res; the only way
to tell is Mk1 eyeball.
We solve it contractually: the client is told to provide images at
appropriate resolution, if they agree then we surcharge them for any
non-compliant images. If they are spotted early, then it's one price, if we
have made the plates it is more expensive. The problem with this is that
you could have said to their suits "do you want a kick in the nuts?" in
Swaheli and they would still nod their heads, and then get arsey when you
performed.
--
Eric |
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Brian
Guest
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| Posted: Wed Jun 06, 2007 4:06 pm Post subject: Re: determining res of embedded images |
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* bmor:
| Quote: |
On Jun 5, 7:30 pm, Tim Monk <t...@austin.rr.com> wrote:
On 6/5/07 8:49 PM, "bmor" wrote:
Some people insist on embedding images in their files.
And for some people, that's fine. Most, on the other hand, shouldn't even
know that that's an option. ;)
In order to determine the res of said images I export them to PhotoShop and
open them up at the minimum acceptable resolution and look for pixelation on
screen and off a 100% laser.
Okay, this is REALLY bad practice. You should, at the very least, invest in
a plugin for Acrobat like QABOT or PitStop. The whole point of a successful
career in prepress is CYA.
Kind of a spotty technique but I've yet to imagine another way. Any thoughts
people?
Your dilemma has been solved by various companies. I expect Adobe to cover
them all in the very near future.
CYA, dude, or you'll wish you had later...Very little research will get you
above what you already think is the right way to do things. How much money
do you have?
Tim
what's CYA?
"Cover Your A**" |
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Papa Joe
Guest
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| Posted: Thu Jun 07, 2007 6:56 am Post subject: Re: determining res of embedded images |
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On 2007-06-05 22:49:38 -0300, bmor <bmor@shaw.ca> said:
| Quote: |
Some people insist on embedding images in their files. In order to
determine the res of said images I export them to PhotoShop and open
them up at the minimum acceptable resolution and look for pixelation
on screen and off a 100% laser. Kind of a spotty technique but I've
yet to imagine another way. Any thoughts people?
|
Illustrators " document info palette window"
will do the trick most of the time and it's the easy way.
Click the options arrow at the top of the palette window and select
"Embedded image". Now select any image and it will give you all the
information.
BUT...on occasion some files you'll receive will not give you any
information if you do the above.
It depends on what version of software created the image. there is a
another way that works no matter what... so try it if you can't get the
proper info from the above instructions.
Go to the links palette and select the image,
click the options arrow at the top of the palette window and select
information.
There's a Resolution percentage found in the information box
Illustrator rasters all image at 72DPI and uses image size to keep it
at the proper res.
so take the value you find and divide by 72 dpi will give you the right PPI.
ex:
20.571% is found in the information box.
that means
72(dpi) divided by .20571 = actual resolution ( ppi)
I've used the latter for at least 8 years and it's been bang on everytime.
--
Welcome to Papa Joe's |
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inez
Guest
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| Posted: Thu Jun 07, 2007 9:51 pm Post subject: Re: determining res of embedded images |
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John Doherty wrote:
| Quote: |
In <1181094578.597178.188230@x35g2000prf.googlegroups.com>, bmor
wrote:
Some people insist on embedding images in their files. In order to
determine the res of said images I export them to PhotoShop and open
them up at the minimum acceptable resolution and look for pixelation
on screen and off a 100% laser. Kind of a spotty technique but I've
yet to imagine another way. Any thoughts people?
You can determine the resolution of images embedded in Illustrator
files with Illustrator's "Document Info" feature, e.g.:
Embedded Images:
Type: CMYK
Bits per Pixel: 32
Channels: 4
Size: 1875K, 600 by 800 pixels
Dimensions: 216 by 288 points
Resolution: 200 by 200 pixels per inch
--
|
Am I correct that this info shows the effective resolution as the image
exists within the document?... so that, if the image was scaled up this
info reflects a lower rez, scaled down it show a higher rez; but doesn't
necessarily reflect the original resolution before any scaled?
I've never quite understood why the scale shown in image information in
the Links palette seem to be based on screen resolution, or 72ppi. Any
simple explanations?
inez |
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Guest
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| Posted: Thu Jun 07, 2007 10:02 pm Post subject: Re: determining res of embedded images |
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On Jun 6, 3:49 am, bmor <b...@shaw.ca> wrote:
| Quote: |
Some people insist on embedding images in their files. In order to
determine the res of said images I export them to PhotoShop and open
them up at the minimum acceptable resolution and look for pixelation
on screen and off a 100% laser. Kind of a spotty technique but I've
yet to imagine another way. Any thoughts people?
|
FlightCheck from Markzware is perfect for this, as it preflight checks
not only the top-level-document, the images used in it, but also all
images embedded within any artwork/images, like an EPSF or so. It will
check for most anything on all used files, such as resolution
(effective even), scaling, if it is missing or not (can be embedded,
but not available for making a proper PDF/print), etc, etc.
Happy Days,
http://www.graphicstart.com |
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Guest
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| Posted: Thu Jun 07, 2007 10:05 pm Post subject: Re: determining res of embedded images |
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On Jun 7, 4:56 am, Papa Joe <Sorry> wrote:
| Quote: |
On 2007-06-05 22:49:38 -0300, bmor <b...@shaw.ca> said:
Some people insist on embedding images in their files. In order to
determine the res of said images I export them to PhotoShop and open
them up at the minimum acceptable resolution and look for pixelation
on screen and off a 100% laser. Kind of a spotty technique but I've
yet to imagine another way. Any thoughts people?
Illustrators " document info palette window"
will do the trick most of the time and it's the easy way.
Click the options arrow at the top of the palette window and select
"Embedded image". Now select any image and it will give you all the
information.
BUT...on occasion some files you'll receive will not give you any
information if you do the above.
It depends on what version of software created the image. there is a
another way that works no matter what... so try it if you can't get the
proper info from the above instructions.
Go to the links palette and select the image,
click the options arrow at the top of the palette window and select
information.
There's a Resolution percentage found in the information box
Illustrator rasters all image at 72DPI and uses image size to keep it
at the proper res.
so take the value you find and divide by 72 dpi will give you the right PPI.
ex:
20.571% is found in the information box.
that means
72(dpi) divided by .20571 = actual resolution ( ppi)
I've used the latter for at least 8 years and it's been bang on everytime.
--
Welcome to Papa Joe's
|
Why not just use FlightCheck?
http://www.graphicstart.com |
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John Doherty
Guest
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| Posted: Fri Jun 08, 2007 3:56 am Post subject: Re: determining res of embedded images |
|
|
In <f49giv$g5q$1@aioe.org>, inez wrote:
| Quote: |
You can determine the resolution of images embedded in Illustrator
files with Illustrator's "Document Info" feature, e.g.:
Embedded Images:
Type: CMYK
Bits per Pixel: 32
Channels: 4
Size: 1875K, 600 by 800 pixels
Dimensions: 216 by 288 points
Resolution: 200 by 200 pixels per inch
Am I correct that this info shows the effective resolution as the
image exists within the document?... so that, if the image was
scaled up this info reflects a lower rez, scaled down it show a
higher rez; but doesn't necessarily reflect the original resolution
before any scaled?
|
Yes, that's all correct (as far as I've ever seen, anyway).
| Quote: |
I've never quite understood why the scale shown in image information
in the Links palette seem to be based on screen resolution, or
72ppi. Any simple explanations?
|
Sorry, no idea. Seems wacky to me, too.
-- |
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Tim Monk
Guest
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| Posted: Fri Jun 08, 2007 6:09 am Post subject: Re: determining res of embedded images |
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On 6/7/07 1:05 PM, wrote:
| Quote: |
Why not just use FlightCheck?
|
LOL! Good one! ;)
Tim |
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