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Abstract Digital photography is a constantly evolving medium that can be used in daily practice for a number of applications, including documentation and patient education. There is no “mystery” to taking quality images when simple rules are followed. The three most important steps in successful dental photography are selecting the right equipment, selecting the right settings, and improving basic photographic set-ups. Following these rules provides the ability to take photographs at a high level of quality on a daily basis. This article highlights some of these points to motivate readers to start taking pictures. A PICTURE is Worth... A Three-Step Process for Taking Better Photographs Alessandro Devigus, Dr.Med.Dent. 82 Spring 2012 • Volume 28 • Number 1
Transcript

Abstract

Digital photography is a constantly evolving medium

that can be used in daily practice for a number of

applications, including documentation and patient

education. There is no “mystery” to taking quality

images when simple rules are followed. The three

most important steps in successful dental photography

are selecting the right equipment, selecting the right

settings, and improving basic photographic set-ups.

Following these rules provides the ability to take

photographs at a high level of quality on a daily basis.

This article highlights some of these points to motivate

readers to start taking pictures.

A Picture is Worth...A Three-Step Process for Taking Better Photographs

Alessandro Devigus, Dr.Med.Dent.

82 Spring 2012 • Volume 28 • Number 1

A Picture is Worth...

Devigus

83 Journal of Cosmetic Dentistry

84 Spring 2012 • Volume 28 • Number 1

introductionImagine that you have just completed a clinical case,and you and the patient are both very pleased withthe esthetic outcome. The restoration looks beautiful.Suddenly,youthink:“Whydidn’tItakepicturesbeforeIstarted?Thiswouldhavebeenanicecasetopresentorpublish.”Unfortunately,thereisnowaytoturnbacktheclockandobtaintheseimages.

Taking pictures is still not considered a standardprocedure in daily practice. Yes, we do take picturesofextensivecases forourpublications,presentations,lectures,andlegalmatters.1Butthisisnotenough.

Furthermore, the author does not see manypublishedarticlesinwhichaphotographicprotocolhasbeenestablishedor is strictly followed.2Certainly, thenumberofarticlesonclinicalphotographyhasgrownsince digital photography became affordable and,therefore, has become more popular.3,4 However, nouniform procedures for producing high-quality dentalphotographscurrentlyexistforauthorsandpublishers.

Figure 1: Takingthreeimagesofaclinicalsituationfromthesameanglemakestheserieslookmoreprofessional.

Establishing effective and consistent methods for capturing images is critical to faithfully recording and conveying clinical results.

85 Journal of Cosmetic Dentistry

Devigus

Establishing effective and consistent methods forcapturing images is critical to faithfully recording andconveyingclinicalresults.5,6Varyinganglesofviewanddifferentdegreesofcroppingcannotonlymakeitdiffi-culttocomparebefore-and-afterimages,butitmayalsohaveaneffectonthephotograph’saccuracy.

Theauthorhasreviewedmanyarticlessubmittedforpublication to The European Journal of Esthetic Den-tistry.Theyrangeinqualityfromverypoortoexcellent,especiallyregardingtheimages.

Itseemstobeachallengetocombineclinicalskillswithanappropriate levelofphotographicdocumenta-tion. Nevertheless, the author encourages readers totakemoreimages.Withdigitalphotography,additionalimagesdonotcreateadditionalcost,butthe informa-tiontheyprovideispriceless.

three-Step Process

Takinggreatimagesispartofathree-stepprocess:• choosingtherightequipment• selectingtherightsettings• improvingthephotographicset-up.

Withtheproperequipmentandsettings,thefollow-ingtipscanimproveyourphotographicskills.

choose the correct AngleThe most common error in dental photography ischoosing an incorrect angle of view that leads todis-tortedandunnatural-lookingimages.

Toavoidorcorrectthismistake,trytopositionthepatient inthechairtogetastraighthorizontalview.Ifnecessary,letthepatientmovehisorherheadtolookatyou.Ifyoutakeaphotoofasmile,aimatthecenterof thepapillaeof thecentral incisors.Thiscreates theappearancethatyouhavetakenan“upsidedown”pho-tograph,whichwillputtheimageonahorizontalplane.Inaddition, it is importantnot tochangetheangleofviewwhiledocumentingaclinicalcase.Keepthesameangle throughout the shooting (Fig 1). This small cor-rectionwillmakeeventhesimplestofcaseslookmuchmoreprofessional.

Before starting documentation, think about thepossibleanglesofviewavailable.Askyourselfifthereis a constant angle of view throughout the wholephotosession.

Three-Step Process

Taking great images is part of a three-step process:

• choosing the right equipment

• selecting the right settings

• improving the photographic set-up.

consider taking pictures as a standard procedure in your daily practice.

Tip:

86 Spring 2012 • Volume 28 • Number 1

Position the Patient

Positionthepatienttogetastraighthorizontalview.Figure 2demonstratesthetypicalresultwhenapa-

tientsitsinthechairwithhisorherheadinabackwardposition.Noticethattheteethlooktoolong(distorted)andtheflashhitstheincisalpartofthesurfaceofthefrontteeth.

Toachieveabetterangleofview,aimatthepapillaeinbetweenthetwoincisors.Thecamera’sflashisthenreflectedmuchbetter (Fig 3).

Trytotakeanimagefrom“above”foranevenbetterresult.Bydoingso,itispossibletocaptureahorizontalviewoftheteeth (Fig 4).

improve Depth of Field

Anothercommonmistakeindentalphotographyistak-ingimagesthatareoutoffocus.Whentakingintraoralimages,youshoulduseamacrolens,berelativelyclosetothesubject,7andworkwithasmallaperture(higherf-stopnumber=smallaperture).Thisleadstoadeeperdepthoffieldinthisphotographicsetting.Whenwork-ingwitha close focusingdistance, try focusingat theoptimal plane in the canine and premolar area of thepatient’smouthtoachieveabetterimageresult.

Toobtainsharperimages,trythefollowing:• Switchthelenstomanualfocusmode.Focuson

thefrontteeth.Withthisfixedfocus,movethecameraslightlyclosertothepatient.Thissmallshiftadjuststhefocusfromtheincisorstothecanineorpremolarregion.

• Snaptheshutter;thisshouldguaranteethatnearlyeverythingisinfocus.

Gettingclosertothepatienthasanotheradvantage.Most cameras showonly95%ofwhatwillbeshownontheviewfinder.Movingcloseralsocropsunwantedstructures and tissues and makes the images appearevenbetterwithouttheneedtomanuallycroplater.

Avoid using autofocus when taking intraoral pic-tures, which wastes precious depth of field in frontof the patient’s mouth. Focus on the front and moveslightlyclosertothelevelofthecaninesorpremolars.Thispreventsblurring(Fig 5).Almostall theteethwillbeinfocusifyoufollowthisrule. Figure 4: Considertakingaphotographfromanevenhigher

position.Whenyouthinkyouareshootingfromdirectlyabovethepatient,youmaybestraight.Trytotakeseveralshotsandselectthebestone.Noticetheuniformlightreflectionsonthetoothsurfaceinthishigh-positionangle.

Figure 3: Acorrected,horizontalangleofviewinwhichthepatienthasbeenrepositioned.Whenattemptingthisangle,aimthelensonthepapillaebetweentheincisors.

Figure 2: Imagewiththepatient’sheadinabackwardposition.Standinginfrontofthepatientandtryingtotakephotosproducesanunwantedangleofview;lightfromtheflashhitstheincisaledge,thehighlightsremoveimportantinformation,andthetoothlooksunnaturallylong.

87 Journal of Cosmetic Dentistry

Devigus

Light Diffusers and reflectors

Two small and efficient tools that can help to obtainconsistently great portrait images are light diffusersand reflectors. By adding a light diffuser to the flash,youcreateauniform,softilluminationofthepatient’sface.Additionally,usingareflector(silverwhenthepa-tientsaretanandgoldwhentheylookalittlepale)canachievebetterlightflowandilluminationofthepatient,which eliminates “dark shadows” below the eyes. Agoldreflectorcanalsomakepatientslookhealthier.

Attach a small light diffuser cup on top of theflash.Thishelpsdiffusetheflash’slightsoastoavoiddirect light, which creates shadows and red eyes(Fig 6).

Useadouble-sidedreflectorwithadiameterofap-proximately30inches,andhavethepatientholdithori-zontallyinfrontofhisorherchest(Fig 7).

While continuing to use manual exposure mode,changetheaperturesettingtoaround5,whichcreatesaslightbluraroundtheface.Positionthepatientinfrontofawhiteorgraybackground(nottooclose,toavoidshadows)(Fig 8).

Figure 5: Avoidusingautofocuswhentakingintraoralpictures.Thispreventsblurring,whichisevidentinthisimagethatstartsatthepremolars.

Figure 6: Placingasmalllightdiffusercupontopoftheflashcreatesauniformflash,eliminatesthe“redeye’’effect,andcreatesaprofessionallook.

Figure 7: Thistwo-sidedreflectorshouldbepositionedbelowthepatient’schin.Thesilversidecreatesacolderreflection,andthegoldproducesawarmerreflection.Dependingonthepatient’sskintype,eithersidecanbeused.Thishelpseliminateunwantedshadowsbelowtheeyesandchin.

By adding a light diffuser to the flash, you create a uniform, soft illumination of the patient’s face.

88 Spring 2012 • Volume 28 • Number 1

Figure 8: Portraittakenwiththeaidofalightdiffuserandgoldenreflector.Inportraitphotography,donotaimforgreatdepthoffield.Settheaperturetoaround5,whichcreatesaslightbluraroundthefaceforasofteffect.

SummaryDigital photography can not only help improve yourpracticeandyourpatients’satisfaction,but itcanalsopromoteyouinthedentalcommunity.Presentingqual-ityimages,particularlytocolleaguesatconferencesandstudy clubs, can create a positive impression of yourpractice.

references

1. BengelW,DevigusA.Preparingimagesforpublication.part2.

EurJEsthetDent.2006;1:112-27.

2. Chu SJ, Devigus A, Paravina R, Mieleszko A. Fundamentals of

color:shadematchingandcommunicationinestheticdentistry.

2nded.HanoverPark(IL):QuintessencePub.;2010.

3. BengelW.Masteringdigitaldentalphotography.Berlin:Quintes-

sencePub.;2006.

4. ShagamJ,KleimanA.Technologicalupdatesindentalphotogra-

phy.DentClinNorthAm.2011;55(3):627-33,x-xi.

5. McLarenEA,SchoenbaumT.Digitalphotographyenhancesdiag-

nostics,communication,anddocumentation.CompendContin

EducDent.2011;32(Spec.No.4):36-8.

6. Salat A, Devoto W, Manauta J. Achieving a precise color chart

withcommoncomputersoftwareforexcellenceinanteriorcom-

positerestorations.EurJEsthetDent.2011;6(3):280-96.

7. CambridgeInColour.com [Internet]. Understanding depth of

field inphotography.Available from:http://www.cambridgein-

colour.com/tutorials/depth-of-field.htm.jCD

With digital photography, additional images do not create additional cost, but the information they provide is priceless.

Dr. Devigus is editor-in-chief of The European Journal of Esthetic

Dentistry. He owns a private practice in Bülach, Switzerland.

Disclosure: the author did not report any disclosures.

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