Polaroid BLL Generator manual Important Concepts, Device Dots Image Resolution Approx. DPI

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Important Concepts

This section explains resolution, color fidelity, and the differences between bitmaps and objects.

Resolution

Resolution can be defined in many ways. Dots per inch (DPI) is a common definition, but an impractical one for slides and overhead transparencies because the DPI changes significantly when the image is projected.

The most practical definition of resolution is the total number of dots (or pixels) in the image. The following table compares the image resolution of several graphics output devices.

Device	Dots	Image Resolution	approx. DPI
VGA screen	640 by 480	307,200	58 (on 17” CRT)
Most laser printers	2400 by 3276	7,862,400	300
All LFR film recorders	4096 by 2731	11,186,176	2790 (on 35mm film)
LFR Mark III, Mark V	8192 by 5461	44,736,512	5945 (on 35mm film)
LFR Mark VI	16384 by 13438	220,168,192	11890 (on 35mm film)

Images produced by the LFR Mark VI contain over 716 times more dots than images on a VGA screen.

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Contents Windows BLL Generator Technical Support Department +1-949-753-8292 Lasergraphics BBS 949Acknowledgements Contents Printing your first image Principle of OperationReference Uninstalling Tips and TricksAppendix a Specifications Glossary Index71 Introduction What You Need Required HardwareRequired Software About this Guide What’s new Various Output Types Windows BLL Generator FeaturesHigh-Resolution Slides TransparenciesTrue Color Easy to Use and Highly CompatibleExpress Setup Installing Windows BLL Generator Installing BLL Generator from the Web SiteSoftware Installation Running setup Adding a BLL-Generator ∙ Select Add generatorSoftware Installation Printing your first image Start-Programs-Accessories-Wordpad Printing from an ApplicationPrinting your first Image Printing your first Image Printing your first Image Viewing a BLL Principle of Operation IntroductionPrinciple of Operation Printing from Windows on a PC without Film Recorder Here is a diagram showing how thisworks Resolution Device Dots Image Resolution Approx. DPIImportant Concepts Color Fidelity Bitmaps and Objects GraphicsText Objects Which Applications Create Bitmaps or ObjectsBitmaps BothPrinter Settings ReferenceOrientation and Paper Size Film Type Non-LFC based Film TypesUse Ektachrome 100 4x5 with LFC-based Film TypesUse Kodacolor 100 with Use Ektachrome 100 120/220 withMinimum Exposure Time Background ColorScaling Color BalanceContrast Gamma Using the Windows 95/98 driver Printer settings in Windows 95/98Reference Using the Windows 95/98 Driver Color balance and gamma correction Miscellaneous options Reference Changing the Default Printer Settings in Windows 95/98 Using the Windows NT driver Printer settings in Windows NTUsing the Windows NT Driver Reference Storing Changed Settings Changing the Default Printer Settings in Windows NT Managing BLL-Generators Adding a BLL-GeneratorChanging Destination Path Deleting a BLL-GeneratorModifying Driver Options Uninstalling When to use the UninstallerHow to use the Uninstaller Tips and Tricks Adobe Type Manager ATM Open Start-Settings-PrintersSpecific Applications Arts & LettersFreelance Graphics CorelDRAWFreelance Graphics for Windows Ver PersuasionPhotoStyler Word, WriteAppendix a Specifications ∙ LFR-XEnvironment Image Enhancements Resolution Film RecorderSupported Operating FontsOutput Problems Glossary GlossaryGlossary Glossary Index IndexIndex