How to Resize an Image in Photoshop Without Losing Quality
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Your resizing options live in the Image Size window. To access the window, open your image file. Then click on Image at the top of the ... BlogHome›Design›DesignResources›HowtoResizeanImageinPhotoshopWithoutLosingQuality Sharethis:FacebookTwitterLinkedInPinterest FollowthesimplestepsinthistutorialtoresizeanyimageinPhotoshopwithoutlosingqualityorresolution. Preventingundesirableeffectslikestretching,cropping,andpixelationiswithinyourgrasp.Justusethisguidetotakecontrolofthesizeandresolutionofyourimages. Asabonuswe’veincludedasectionaboutresizingwithoutlosingimagequality.ThankstoPhotoshop,wecanenlargeimagestoapointwithoutthetypicalpixelenlargementartifactsthatcanmakethemlookbad. Resizingimagescandomorethanjustpreventauto-sizing.It’sjustplainhandytoknow.Afterall,themoreyoucandobyyourself,thelessrelianceyouhaveonothers,whichsavestimeandmoney.Plusit’sreallyeasyonceyouunderstandthetermsandfunctions.So,let’sgettoit. ResizeanImageinPhotoshop ImageviaStasinho12 Wewanttoresizethishighresolutionimageofarhino.Asyoucansee,there’salotofdetailwedon’twanttolose,soherearetheproperstepsformaintainingthem. 1.OpenImageSize YourresizingoptionsliveintheImageSizewindow.Toaccessthewindow,openyourimagefile.ThenclickonImageatthetopoftheapplicationframe,andclickImageSize.Or,holdCommand+OptionandhitIonthekeyboard. Fromhereyou’llseeanumberofoptions,fields,anddropdownmenusgivingyoucontroloverthedimensionsandresolutionoftheimage. Inthisguide,weonlyneedtoaddresstheWidthandHeightfields.AslongasyouleavethelinkiconinitsOnstate,youwon’thavetoworryaboutdistortingyourimagebyaccidentallymis-typingormismatchingvalues.They’llautomaticallysyncwitheachother.I.e.,whenyouchangeonevalue,theotherchangestomatchtheoriginalratioofdimensions. Thelittlechainlinkiconattheleftsideoftheboxedareaisthelinktoggle.Thisisthe“off”state,meaningyoucaneditthedimensionsindependently.Youwantittolooktheimageabovethis,withthelinesconnectittoWidthandHeighttoensuretheystaysynced. 2.SetYourDimensions Inputyourspecificdimensions.Inthedrop-downmenustotherightofeachdimensionfield,youhavechoicesfortheunitsofdimension: Percent–allowsforquickmathinpercentagesPixels–setspecificpixeldimensionsInches–setsPPI(PixelsperInch)Otherunitsoflinearmeasurement Justchoosewhichunitfitsyourgoal.It’sgoodpracticetouseanimagepre-sizedforuseinitsintendedenvironment,topreventotherappsorservicesfromchangingyourimageswithoutyourcontrol.Thismeanstomaketheimageexactlythesizeyouneedsoyoucanplaceitat100%. Forexample,inaprintedpieceyouwouldwanttosizetheimagetothedimensionsoftheimageboxinyourlayoutprogramtogivethebestresolution.Foradigitaldesign,youwouldinsteadmakesurethepixeldimensionsmatchtherequirements. 3.SaveaCopy Onceyouhaveyourdimensionsset,hitOK.Nowyou’llbebackintheimagewindowwhereyoucandoothereditingwork,orjustsaveandclose.It’sgoodpracticetosaveacopyofthisimageandleavetheoriginalasitwas,incaseyouneedtomakechanges. HitCommand+Shift+StobringuptheSaveAsdialog,alsoavailableundertheFilemenuuptop.Hereyoucanrenameyournewlyresizedfiletodifferentiateitfromtheoriginal,andalsosaveittoanewlocation.Ifyouhaveabatchofimagestoresize,it’sagoodideatocreateanewfolderforthenewimagestoplayitsafe. EnlargeanImageinPhotoshop Wewanttomakethisbigger,butnotloseanypreciousdetails.ImageviaNumbernineRecord Sinceadigitalimageismadeofpixels,i.e.hard-edgedlittlemonotonesquares,wecan’tdividethemonceyouzoomincloseenoughtoseethemindividually.We’llrelyonPhotoshop’shigh-leveltechnologytoresampletheimage. ThisiswhereResolutionisimportant.Thisistheindicationofanimage’sdetail,measuredinhowmanypixelsfitwithinasquareinch,orPPI(PixelsPerInch).Youcanseehowdifferentresolutionslooksbelow.Morepixelspersquareinchofanimagegivemoredetailandsharpness. NotethesettingsheretoillustratedifferentResolutionusingthesameDimensions.Imagequalityisaffectedbythisrelationshipevenwhentheimageremainsthesamephysicalsize. Thisbringsustoincreasingthesizeandresolutionofimages,andthelimitationsofenlargement.Remember,pixelscan’tbedivided.Sohowdoweenlargeanimageifwecan’tcreatepixelsfrompixels? 1.EnablePreserveDetails2.0 Photoshopintroducedthishigh-qualityenlargementfeaturein2018.Toenableit,hitCommand+KtoopenthePreferenceswindows,thenclickTechnologyPreviewsinthelisttotheleftofthewindow. YoucanalsoclickPhotoshopatthetopofthescreen,hoveroverPreferences,andclickTechnologyPreviews. JustmakesureEnablePreserveDetails2.0Upscaleischeckedonandyou’regoodtogo.Ifnot,clickiton.Noneedtorestart.NowgobacktotheImageSizewindowandrefertotheResampletoggle. 2.EnableResample Whenswitchedoff,thepixeldimensionsandresolutionremainlinked.Ifyouincreasetheresolution(seenasPixels/Inchinthewindow)thedimensionswilldecreasetoreflectthechange,andviseversa.ItsimplymeansthatPhotoshopisnotaddingorremovingpixels,thetotalnumberofpixelsremainsconstantandonlytheamountpersquareinchchanges. NowcheckResampleon,andtheoptionsfortheresamplingmethodinthedropdownnexttoitbecomeavailable.Thesearetheoptionsforchangingresolutionanddimensionsseparately,lettingPhotoshopblendthepixelsinvariouswaystokeeptheimagesmoothwhenenlargingorreducing.Theoptionsforenlargementareinthetophalfofthelist. Thetopsectionofthelistisforenlargement,specificallyPreserveDetails2.0 3.SelectPreserveDetails2.0 ThedefaultmodeforenlargementisAutomatic,butitcouldbesettothelastmethodused.Ifit’ssettoAutomatic,Photoshopwon’tusePreserveDetails2.0,sochoosethismanuallytoensureyougetthehighqualityresultsitprovides.SoselectPreserveDetails2.0forbestresults. 4.NoiseReduction WhenyouselectPreserveDetails2.0fromthelist,you’llseeasliderforNoiseReductionpercentage.Instinctuallyitwouldseemlikethrowingthesliderallthewayto100%wouldwork,butusethepreviewintheleftsideofthewindowtoseehowthataffectstheimage.Sometimesitcansmeartheimagedetailsifsettoohigh.Chooseavaluethatreducesnoise,butdoesn’tmakethedetailstoo“creamy.” Whendoublingresolutionto600PPI,thisimagewillneedsomeNoiseReduction. SeehowNRat100%istoomuch,though.Useavaluebetween0and100inacaselikethis. Now,doafinalcheckoftheimagepreviewbyzoominginandoutandpanningaroundtheimage.ChangeNoiseReductionifyouneedto.HitOKandchecktheimageagainatfullscreen.Ifyouwanttocompare,hitUndo(Command+Z)andopenImageSizeagain.Useothermethodsofenlargementfromthedropdownmenuandchecktheresults.ChancesarePreserveDetails2.0willbeyourbestbestforhighqualityenlargement,withoutlosingimagequality. LookingforotherusefulPhotoshoptips?Checktheseout. Halftoning101:HowtoHalftoneImagesinPhotoshopHowtoSmoothEdgesinPhotoshopAfterMakingaSelectionHowtoWhitenTeethinPhotoshop+MoreRetouchingTipsPhotoshopBasics:LearnHowtoUseLayersinYourDesignsHowtoMakeaBackgroundTransparentinPhotoshop Findquality,easytoscalestockassets. Getvectors RelatedPosts FreeDownloads Inspiration Editorial
延伸文章資訊
- 1How to Enlarge Photos Without Losing Detail in Photoshop CC 2018
- 2How to Resize an Image - All About Images - Research Guides
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