StackShotManual_1_5.pdf - 第36页

5. Connections  &  Cables  One  of  the  design  goals  of  StackShot  was  to  make  it  simple  to  add  cable  extensions  and  do  custom  wiring.  Nothing  is  more  frustrating  than…

4. Accessories

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StackShotisfullycompatiblewithStopShotshuttercables.Awidevarietyofcablesareavailable

athttp://www.cognisys‐inc.com

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For“nocamerawiresattached”operationyoumightconsidertheuniversalinfraredshutter

trigger.It’scompatiblewithCanon,Nikon,Sony,Pentax,andmanyothercameras.Itsimply

plugsintothe“ShutterTrigger”portofStackShot.Thismayberequiredifyourcameradoesnot

supportawiredshutterrelease.

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Figure12‐UniversalIRRemote

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5. Connections&Cables

OneofthedesigngoalsofStackShotwastomakeitsimpletoaddcableextensionsanddo

customwiring.Nothingismorefrustratingthanbuyingaproductandfindingoutthatituses

over‐pricedproprietarycables.AllStackShotcableextensionsareavailableatyourfavorite

audio/videoequipmentsupplystore.Weprovidetheconnectiondiagramsbelowsothatyou

havetheoptionofmakingcustomcables.Ifyouhaveanyquestions,pleasecontactusat

support@cognisys‐inc.com

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5.1 ShutterTriggerOutput

Thetriggeroutputusesastandard“RCA”jack.RCAexte nsionscomeinalldifferenttypes,one

endasmaleandtheotherasfemale.Toextendtheshuttertriggercable length,simplybuya

mono(single)extensionwhichistypicallyusedforvideo.

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AswithallRCAjackstheoutsideconnectorisground.TheStackShottriggeroutputisa“Low

SideDriver”(switchesinground).Thismeansthatwhentheshuttertriggeroutputfires,it

connectsthecenterconductoroftheRCAjacktotheoutsideconnector(ground)todraw

currentthroughthecenterconductor.

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SeeFigure13belowforawiringdiagramfortheRCAconnectors.

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Figure13‐RCAconnector

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5.2 MotorCable

Themotorcableincludedwiththekitisahigh‐qualityS‐video/SVHScablewithlowimpedance.

IfyouaregoingtoextendthelengthbetweentheStackShotcontrollerandtherailmakesureto

useahigh‐qualitycable–otherwiseperformancemaybesacrificed.

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6. Setupexamples

6.1 MirrorLockup

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Mirrorlock‐upisacommonlyusedfeatureinmacrophotographytoreducevibrationofthe

cameraduringshooting.SLRcamerasswingthemirrorupoutofthelight‐pathtothefilmor

sensorjustpriortotheshutteropening.Thismovementultimatelyleadstovibrationwhichcan

inducemotionblurinthepicture.Somecamerashavetheabilitytoenableafeaturewherethe

firstbuttonpressoftheshutterswingsthemirrorupandthesecondbuttonpressopensthe

shutter.ThisfeaturecanbeprogrammedintoStackShotbygoingintotheconfigurationmenu.

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ThismethodisidenticaltosettingStackShottotakemultiplepictures.PresstheCONFIGbutton

toentertheglobalconfiguration:

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== Global Config ==

> # pics: 1

Tsettle: 500.0 ms

Toff: 500.0 ms ->

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Withthecursornextto“#pics”(discussedinsection3.3.1),presstheUPbuttontochangethe

settingto“2”.Thiswillcausetheshutteroutputtofiretwotimespercamerastep.Thefirst

timewillswingthemirrorupandthesecondwillexposetheimage.We’renotquiteyetdone

though.PresstheSELECTbuttonuntilthecursorisnextto“Toff”.

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== Global Config ==

# pics: 1

Tsettle: 500.0 ms

> Toff: 500.0 ms ->

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“Toff”isthetimetheshutteroutputwillremainoffbetweenoutputpulses(seesection3.3.3for

moredetails).Inthiscase,thiswillbethetimebetweenwhenthemirrorisraisedandthe

pictureisactuallytaken.AdjustthisparameterusingtheUP/DOWNbuttonstoasuitablevalue

toletthemirrorvibrationsettleoutprior toexposingtheimage.PresstheCONFIGbuttononce

moreanditwillreturnyoutothemainmenu.

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