Converting print Ad to 256 color jpg for ATM Screen

Got specs for converting a print ad to jpg for ATM: 800wx600h; 72dpi; 256 colors. As far as I know, the only way to get 256 colors is to convert to index. When I do, the halftones get slightly grainy. Also, I can only save the file as .psd, not .jpg as required. Any advice on how to convert my file to 72 dpi jpg with 256 colors appreciated. Thanks.

Maybe after using index color to get the 256 colors, then convert back to RGB Color and save as a jpeg.

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HT5182 How can I convert Raw images from iphoto to jpg for the web?

I have some pictures in Raw mode stored in my Iphoto that I need to convert in JPG for the web and to print in business cards, I have been going around e-mailing the pictures to myself in large or medium size and then saving them again to my iphoto. Is there a way to do this from iphoto directly?

iMac (24-inch Early 2009), iOS 6
Are your pictures on your iMac or on an IOS device?
On your iMac use "File > Export " set the jpeg quality and size you want:
Regards
Léonie
Sorry, Ralph, I see, we have been cross posting

I am tryin to learn about color separation for silk screening

I am tryin to learn about color separation for silk screening

Color separation generally means using the CMYK color mode which is only available in the full Photoshop CS, not in Elements (RGB mode).

How can i create 256 colors (8 bits) jpeg ?

Dear all :
The jpeg created by JPEGEncoder was in true color (24 bits) , how can i create or convert the jpeg to 256 colors . Because i want to convert the jpeg to gif in further , but the gifencoder i found can only accept the images that with 256 colors only , so any one can give me a help ? Or the ways that convert a jpeg to gif using java ?

To reduce the number of colors in an image, try:
http://www.gurge.com/amd/java/quantize/
This does a very good job of reducing colors without making the image look too different.
Further, if you want to encode a GIF file, try using:
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GNU Screen and 256 color terminal

Okay I've been racking my brain over trying to get 256 colors working while in screen.
If I run the 256colors2.pl script (found in xterm source) while in xterm / roxterm / xfce4-terminal it shows all colours as expected.
$ echo $TERM
xterm
Now I followed the wiki and added the "term screen-256color" line to my .screenrc
but if I run screen and run the 256colors script it doesn't show 256 colours (all messed up)
If I exit screen and manually set my $TERM
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then run screen again, things seem to work properly.
But why?
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Last edited by Zer0 (2009-10-30 05:10:08)

I recommend just using TERM=xterm-256color, as TERM=xterm does not reflect the terminal's capabilities. Replacing the command for your current terminal emulator with something like:
xterm -tn xterm-256color
should be sufficient.
I now use rxvt-unicode-256color from [community], which uses a 256color terminfo by default. Why xterm and friends don't use this when it is supported, I don't understand.
Last edited by chpln (2009-10-30 06:32:44)

Convert JPG to 256 color GIF

Is there any existing class file to convert a JPG to 256 color GIF?
I tried some free src from there:
http://www.geocities.com/marcoschmidt.geo/java-image-coding.html
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GIF files only support up to 256 unique colors, so you need to reduce the number of colors used in your images -- a process called quantization. This will result in a degradation of quality, but the result is usually acceptable.
See the discussion here for a link to a decent quantizer:
http://forum.java.sun.com/thread.jsp?forum=31&thread=327240

Error message when uploading book for printing. All images are jpg and rgb. Could they be too large to upload? What size is required and how do I reduce size in Aperture?

I receive an error message when I upload my book for printing. Not sure what the problem is. All my images are jpg and rgb. Could they be too large as it takes about 15minutes to upload to Apple. How do I reduce the size of the image in Aperture?

Hi Leonie,
Thanks for your reply.
Error message below. The preview is fine . I can discount the first 2messages as its a new computer so plenty of disk space and upload doesn't seem to be interrupted. I have uploaded to iphoto before. have tried to upload 3times with the same error message. I had to photo my slides with a Kaiser Baas photo maker , which apparently doesn't scan but takes photos in megapixels of the slides. I am wondering now if the format is incompatible though they are jpg files or the colour type wrong. The image files are around 1-3 mb each and 72 ppi. I think I will now scan them properly with a scanner to 300dpi anyway to improve quality.
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1. Upload Error. Loss of connection or file corruption during order upload may cause an incomplete order. Resubmitting your order usually resolves this issue.
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How to save a JPG in 256 colors?

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Mary Jo, since you are a newcomer, you may not yet understand that in any given Adobe forum, there are a whole bunch of conversations going on at the same time. Each one of these is about a certain "topic", described in the title and opening post. The discussion sometimes stays right on point, and sometimes veers off a bit, and there are often quick side-issues branching off from the main topic, but still related. Within limits, people here try to keep the discussion on a single general topic. For example, in this topic, the initial issue is whether there is a way, in Photoshop, to limit the number of colors in a JPEG image to 256; there were discussions about whether this could be done or not, and alternative programs that may be able to accomplish this, and a comparison of the file sizes for 256 bit images in different file types.
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[Edit: Trez hit "post" before I did. Trez-- I think she is using Photoshop, not Elements; she did say CS2.]

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Thomas Crowley wrote:
I've opened the .jpg image in Illustrator. It is a line drawing.
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is because the "individual parts" of the image are single color pixels. To "edit" these, you need a bitmap editor.
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Hi mns579,
Thanks for your swift reply.
I'm afraid that sequence leads to a burn-out of some of the black text, making it unreadable.
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dadanas wrote:
Hi Simcah, I have a similar problem. Have you found out any solution?
thanks, dan
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Do I need color profile for print taged in the file?
I need to print some photos at LAB (photo lab) and they print in color space sRGB.
I have created through Adobe Raw a JPEG file, which has untagged color profile.
Is it necessary to have a color profile for a print at photo lab tagged in the file or better not?
Thank you for explanation.

Since you say the printer "prints in color profile sRGB", it sounds as though you should save your images tagged with the sRGB IEC61966-2.1 color profile.
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http://en.wikipedia.org/wiki/Lab_color_space
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1. What format should I provide the image in (JPEG, TIFF, etc.)?
2. Should I tag the image with the sRGB IEC61966-2.1 color profile?
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Kumusta Ka? Ma init pa dyan?
If you're browsing the web and you're internet connection is slow or sometimes dropping, it is normal for Safari to hang or freeze for a little bit until it connects to the site you're trying to view or visit.
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Converting print Ad to 256 color jpg for ATM Screen

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