 
Tom Kubinski Mary Albers www.sextonprinting.com
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August 2007 TK's Korner
Save Disk Space, Less Compression Time and Retain Original Appearance
Saving disk space and time using compression.
If you prefer not to use a lossy compression you can use a loss less compression and reduce a files size, still saving some time and money. The same 18mb file when saved as a TIFF with LZW compression is only 12mb and when the file is saved in a PSD (Photoshop) format, it is only 8.5mb. Further down you will see step by step instructions with screen captures to show you how to save your images in these different formats using Adobe Photoshop.
Lossy Compression
Lossless Compression
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When JPEG compression is used with the correct quality settings your files will be much smaller and still retain their original appearance. Smaller file sizes will mean faster printing, less time archiving and moving files around the network. Consider this, using JPEG compression with these settings would reduce your disk space usage by nearly 60%, this also translates into two to three weeks of time saved each year performing various other tasks with your images.
To save your files in a JPEG format, select Save As from the File menu. Then select JPEG, choose where to save the file and click on Save. Choose your options in the JPEG Options dialog box. It is best to set the Quality level to 12 and select Basline (Standard). Figure 1 on the previous page shows samples of the different Quality options used.
To save your files in an EPS format with JPEG compression, select Save As from the File menu. Then select Photoshop EPS, choose where to save the file and click on Save. Choose your options in the EPS Options dialog box. It is best to set the Encoding to JPEG (maximum quality).
To save your file in a TIFF format, select Save As from the File menu. Then select TIFF, choose where to save the file and click on Save. It is best to choose LZW from the Image Compression options. Leave everything else as the default, unless you are on a Windows platform, then choose IBM PC for the Byte Order. To save your files in a PSD (Photoshop) format, select Save As from the File menu. Then select Photoshop, choose where to save the file and click on Save.
Tom Kubinski-Printing Consultant