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mac compatible image formats?

by madmatt721 / April 11, 2006 7:53 AM PDT


I am using a PC but I need to have a Mac-compatible image on CD to submit to a publisher. I'm using Photoshop 7.

What I need to know is whether or not my disk will be readable on a Mac. I saved the image as a TIFF file and checked 'Macintosh' under 'byte order'. Then I used Roxio Easy Media Creator to burn it to a CD.

Is there something else I need to do or will this work? I don't know anyone with a Mac and they don't seem to rent them out anywhere. Even if they did, I am unfamiliar with how to use one.

Any help would be appreciated. Thanks. : )

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No problem
by simoncroft / April 11, 2006 8:13 AM PDT

You should have no problem there. PhotoShop on a Mac should read any image file you can create on a PC.

The biggest problem we in the publishing community have with submitted image files isn't the format, it's the resolution. People sometimes send in images at 72dpi without realising that commercial print requires 300dpi. So your image needs to be about 1,000 pixels across just to fill two columns of a newspaper.

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by lampietheclown / April 11, 2006 10:46 AM PDT

Photoshop shouldn't be required.

Macs can open PC formated CDs, and Quicktime can open TIFF files.

Do make em high res. though.


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Another recommendation is to send the files as universal
by taboma / April 11, 2006 2:33 PM PDT
In reply to: Yep

to any commercial printer on a CD or DVD. ISO9060. The file is universal and can be read from the PC and Mac platform and others. Roxio Toast has that feature of saving files to be sent out in different formats.
After sending out the files a a JPEG, your printer will be able to do a save as and rename the files as a CMYK file. Cyanne, Majenta, Yellow & Black which is a four-color process needed for commercial printing or as black and white, depending on the job.
A typical JPEG file is RGB (Red, Green and Blue) which is nice to view as a photo file. Not however for a commercial print job.

Lampie was correct to recommend 300 resolution.
Your commercial printer will than adjust the res to the print job.
Could go down lower depending on the screen selected to print the job.
Standard in printing at dots per inch is to have the resolution at double.
If Lampie was printing your job at 150 DPI than your files should be saved at 300 resolution.
A newspaper is usually printed at 85 lines per inch and the file would be saved at 170 resolution (two times the lines per inch).

Whatever you do, do not send you files out as Simon has cautioned you at low res (70 res). You will only receive a call from the commercial printer asking you to resend all the files at the proper resolution.

Just make sure you always do a save-as from the original file. If at a later date you decide to print a really slick job, you will have the original file to save as a 300 res.
Another area where you want to note is the original file sent to the commercial printer can only be increased 115%. Anything above that percentage will be a visual mush. Yuk!!


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CD Burning
by mrmacfixit Forum moderator / April 12, 2006 12:05 AM PDT

While Roxio EZ CD creator is a decent program for the Win side of the house, it does have a couple of annoying quirks that make it behave nastily.
1. When a user inserts a blank CD into the burner and launches CD Creator, the default option asks if you want to format this CD. This allows total drag and drop with the CD acting as a mapped drive. While this is quite neat, the CD is unreadable by anyone who does not have Roxio EZ CD Creator installed. This includes all Macs and any Winbox without a CD burner. Avoid this method.
2. Another default setting allows the creation of "Sessions" which means that the disk can be used over and over until full. Another neat feature but this makes the CD unreadable by some CD players.
When you absolutely, positively, have to have others read the CD, make sure that you Finalize the disk. This prevents any further writing to the disk but makes it readable by everyone.

The best option to use in EZ is the "Make a data disk" option.

Don't mean to teach you how to suck eggs but those two problems have kept me busy for some time at work


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by madmatt721 / April 13, 2006 7:57 AM PDT
In reply to: Yep

The resolution isn't a problem. The image is 300 ppi.
: )

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