Canon XL1 3CCD Manual

A SERVICE OF

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5.Depthoffield

‐Ausefulandsubtletechniqueforcontrollingthecomplexityofimagesisdepthoffield.

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Post‐production

Becausepost‐productiontechniquesoccurlaterintheprocess,itisoftenpossibletoadjustthembased

ontheresultsoftestcompressions,makingfine‐tuningmucheasier.

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1.Staticversusmovingimages

‐Asinproduction,superfluousmovingimagesaren’tappropriateforcontentthatyouplanto

aggressivelycompress.TheyarenotthatimportantforDVD,but

theyareforwebandCD‐ROM.

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2.Motionblur

‐Inthesamewaythatareal‐worldshutterspeedintroducesmotionblurthathelps

compression,youcanusethevirtualshutterinrenderingapplications.Foreffectsthatsupportmotion

blur,renderthemwithashutterspeedthatmatchesthatofthesource.

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3.Anti‐aliasing

‐Thisrenderingtechniquesoftenstheedgesofrenderedelements,lettingapixelattheedgeofan

areabeanintermediatevalue.Smoothingouttransitionsamongpartsoftheimageimproves

compressibilityandappearance.

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4.Progressiverendering

‐Whenworkingwithinterlacedsourcevideo,itmaybeappropriatetorendermotiongraphicsas

progressivescanwhenmakingthecompressionmaster.Byrenderingtheprojectinprogressivescan

mode,youcandeinterlacetheinterlacedsource

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butthegraphicalelementsremainaperfect

progressive.

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