John Jensen on tue 21 feb 06
I have an entry form for a juried show here in my area which accepts =
digital
images in the form of jpegs. I was a bit surprised to notice that there =
is
a limitation on the size of the file, because I had the idea that =
"bigger is
better." I can understand that "big enough is big enough" and sometimes
those big files just go way off the page and have to be shrunk back down =
to
be viewable. I do have a question: What is a good way to measure the =
size
of the image? This show specifies: Not larger than eight inches in =
image
size or larger then 300 dpi. Do I measure the image on the screen? =
Nothing
in any of my programs shows dpi as a parameter, so how do I calculate =
this.
I hope this subject will have a broader interest than just my own needs.
John Jensen, Mudbug Pottery
John Jensen@mudbugpottery.com
http://www.toadhouse.com http://www.mudbugpottery.com
http://www.mudbugblues.com
Tony Ferguson on tue 21 feb 06
Hi, John,
I just returned from giving a few workshops at UW-LaCrosse: one of them being a digital photo shoot and lecture--so the subject is fresh in my mind. What you want to do is resize your image in a program like the gimp, photoshop or any other imaging program. All of them let you resize your image. You want to follow the specs according to the show (it would be nice if they all had a standard as making the transition for many people is a challenge enough). In photoshop you would go into "image resize" and enter the information in accordingly to what the show specifies. This will in most cases flawlessly and with out error resize your image. You need to make sure you save it as a different file name so you always have the original to reuse again. Alway save on the highest image quality setting unless otherwise advised. Remember, keep an original in at least two places (2 hard drives, a CD, DVD, etc) for future use. If you really get into trouble, email me and I will help you.
Also note: ppi and dpi are two different things--some folks use them interchangingly and they are not the same. PPI referst to pizels per inch--it was what you see on your screen depending on your screen settings. DPI refers to dots per inch--to do with printing.
Have fun. Once you start playing and doing tests (just like in clay and glazes) you can see with your own eyes when you look at things printed out at different settings and from different screens, the qualities.
Tony Ferguson
Tony Ferguson
...where the sky meets the lake...
Duluth, Minnesota
Artist, Educator, Web Meister
fergyart@yahoo.com
fergy@cpinternet.com
(218) 727-6339
http://www.aquariusartgallery.com
http://www.tonyferguson.net
---------------------------------
Yahoo! Mail
Use Photomail to share photos without annoying attachments.
David Gallagher on tue 21 feb 06
John,
What programs do you have? In photoshop its under image size. With the 8x8 my asumption is printed image size, as that is the only real consistant thing with size. If your stuck, send them to me and Ill resize them for you.
John Jensen wrote:
I have an entry form for a juried show here in my area which accepts digital
images in the form of jpegs. I was a bit surprised to notice that there is
a limitation on the size of the file, because I had the idea that "bigger is
better." I can understand that "big enough is big enough" and sometimes
those big files just go way off the page and have to be shrunk back down to
be viewable. I do have a question: What is a good way to measure the size
of the image? This show specifies: Not larger than eight inches in image
size or larger then 300 dpi. Do I measure the image on the screen? Nothing
in any of my programs shows dpi as a parameter, so how do I calculate this.
I hope this subject will have a broader interest than just my own needs.
John Jensen, Mudbug Pottery
John Jensen@mudbugpottery.com
http://www.toadhouse.com http://www.mudbugpottery.com
http://www.mudbugblues.com
______________________________________________________________________________
Send postings to clayart@lsv.ceramics.org
You may look at the archives for the list or change your subscription
settings from http://www.ceramics.org/clayart/
Moderator of the list is Mel Jacobson who may be reached at melpots@pclink.com.
---------------------------------
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Use Photomail to share photos without annoying attachments.
Alisha Clarke on tue 21 feb 06
John,
Screen resolution is typically 72 pixels/inch. If they are only going
to view the image on a monitor, it makes sense to limit the size. The
extra resolution will only serve a purpose if it is going to be
printed out on a high-quality printer. Common screen pixel sizes vary
from 800x600 to about 1600x1200. I have my 19" monitor set to
1280x1024. For web images, I typically set the large image resolution
to 800x600 (or 600x800 depending on orientation) and use PhotoShop's
"Save as web" to get the best compression. Doing this yields an image
that is only about 50k in size but give plenty of resolution for
viewing on-line. You can see examples of my images on my website
(www.alishaclarke.com). Click on one of the 100x100pixel thumbnails in
the gallery for the large picture (I'm a novice potter, so be kind :-)
).
They're actually giving you a lot of leeway on the size. An 8" image
(or 8"x6") at 300 pixels per inch is up to 2400x1800 pixels or
4,320,000 total pixels in size. This is the size of a typical 4
megapixel digital camera. The image will probably take about 1.5 MB of
disk space and will take a few minutes to send over a dial-up line.
Leesh
~~~~~~~~~~~~~~~~~~~~~~~~~
Alisha Clarke
www.alishaclarke.com
On 2/21/06, John Jensen wrote:
> I have an entry form for a juried show here in my area which accepts digi=
tal
> images in the form of jpegs. I was a bit surprised to notice that there =
is
> a limitation on the size of the file, because I had the idea that "bigger=
is
> better." I can understand that "big enough is big enough" and sometimes
> those big files just go way off the page and have to be shrunk back down =
to
> be viewable. I do have a question: What is a good way to measure the si=
ze
> of the image? This show specifies: Not larger than eight inches in imag=
e
> size or larger then 300 dpi. Do I measure the image on the screen? Noth=
ing
> in any of my programs shows dpi as a parameter, so how do I calculate thi=
s.
>
> I hope this subject will have a broader interest than just my own needs.
>
> John Jensen, Mudbug Pottery
> John Jensen@mudbugpottery.com
> http://www.toadhouse.com http://www.mudbugpottery.com
> http://www.mudbugblues.com
>
>
Pfeiffer, Dan R (Dan) on tue 21 feb 06
=20
John>>> What is a good way to measure the size
of the image? This show specifies: Not larger than eight inches in
image
size or larger then 300 dpi. Do I measure the image on the screen?
Nothing
in any of my programs shows dpi as a parameter, so how do I calculate
this.
>>>
This is the result of someone at the show not understanding what they
are asking for.
The 300 dpi could refer to the file and should have been stated as
pixels per inch to really mean anything. The size of image on a screen,
given a 1 x 1 mapping will depend on how the screen is set up. I like my
screen res at 1024x768 on a 21" screen. Any image on it will not be the
same size as one at the same screen res on a smaller screen. The only
real use and meaning dpi has is in scanning. In this case you start with
a thing that has a real size and the image dpi tells you that if you map
x dpi to 1" you get the same size pic as you started with. If you do not
start with a paper thing it is at best a hint of an output size. This is
why in most cases you do not see dpi in image programs but it is almost
always there in the file header. If may have been set by your camera ,
mine leaves it blank, to some default value incase the odd program needs
it but it has no usefully meaning in a digital pic. Irfanview (free and
very nice viewer) will let you see it and set it but this will not
likely change the size any other viewers display.
Dan & Laurel in Elkmont Al=20
Pfeiffer Fire Arts=20
www.pfeifferfirearts.com
Potters Council Members=20
Tony Ferguson on tue 21 feb 06
Alisha,
Chances are you dpi resolution is 96 which is the new standard--maybe at least a year now instead of the old 72. That means images will be a bit sharper and thankfully you covered the a few of the various settings. This is an issue because some people like maximum viewing space will others like jacking up the text and or image viewing size. That is why website looks so different on different people's computers--monitors, settings, adjustment of contrast and brightness, color saturation. Most everyone is not even heard of or is going to use a spider (helps you calibrate your monitor) but man, there is going to need to be some sort of calibration standard--web based would be nicer. Even so, there will always be differences in how your work looks on the web. That is why I stress to people you want as little post image editing as possibe when you shoot your work. The website work I do on the side is all done at 96 as most folks will either have or will get a monitor at 96 dpi.
You all may want to keep that in mind.
Tony
Alisha Clarke wrote:
John,
Screen resolution is typically 72 pixels/inch. If they are only going
to view the image on a monitor, it makes sense to limit the size. The
extra resolution will only serve a purpose if it is going to be
printed out on a high-quality printer. Common screen pixel sizes vary
from 800x600 to about 1600x1200. I have my 19" monitor set to
1280x1024. For web images, I typically set the large image resolution
to 800x600 (or 600x800 depending on orientation) and use PhotoShop's
"Save as web" to get the best compression. Doing this yields an image
that is only about 50k in size but give plenty of resolution for
viewing on-line. You can see examples of my images on my website
(www.alishaclarke.com). Click on one of the 100x100pixel thumbnails in
the gallery for the large picture (I'm a novice potter, so be kind :-)
).
They're actually giving you a lot of leeway on the size. An 8" image
(or 8"x6") at 300 pixels per inch is up to 2400x1800 pixels or
4,320,000 total pixels in size. This is the size of a typical 4
megapixel digital camera. The image will probably take about 1.5 MB of
disk space and will take a few minutes to send over a dial-up line.
Leesh
~~~~~~~~~~~~~~~~~~~~~~~~~
Alisha Clarke
www.alishaclarke.com
On 2/21/06, John Jensen wrote:
> I have an entry form for a juried show here in my area which accepts digital
> images in the form of jpegs. I was a bit surprised to notice that there is
> a limitation on the size of the file, because I had the idea that "bigger is
> better." I can understand that "big enough is big enough" and sometimes
> those big files just go way off the page and have to be shrunk back down to
> be viewable. I do have a question: What is a good way to measure the size
> of the image? This show specifies: Not larger than eight inches in image
> size or larger then 300 dpi. Do I measure the image on the screen? Nothing
> in any of my programs shows dpi as a parameter, so how do I calculate this.
>
> I hope this subject will have a broader interest than just my own needs.
>
> John Jensen, Mudbug Pottery
> John Jensen@mudbugpottery.com
> http://www.toadhouse.com http://www.mudbugpottery.com
> http://www.mudbugblues.com
>
>
______________________________________________________________________________
Send postings to clayart@lsv.ceramics.org
You may look at the archives for the list or change your subscription
settings from http://www.ceramics.org/clayart/
Moderator of the list is Mel Jacobson who may be reached at melpots@pclink.com.
Tony Ferguson
...where the sky meets the lake...
Duluth, Minnesota
Artist, Educator, Web Meister
fergyart@yahoo.com
fergy@cpinternet.com
(218) 727-6339
http://www.aquariusartgallery.com
http://www.tonyferguson.net
---------------------------------
Yahoo! Mail
Use Photomail to share photos without annoying attachments.
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