hhpc macro workshop
TRANSCRIPT
Slide 1
2/2/13Ed KnepleyHHPCMacro & Close-upWorkshop
Macro & Close-up Devices(and where they go)Lens macro & regular
Between Camera & LensTeleconverterExtension Tubes
In Front of LensScrew-in Close-up Lens
Less Frequently UsedReversing RingBellows
Focusing Rail For Precise Focus (& Maximum Magnification)
Maximum magnification (reproduction ratio)REQUIRES the Lens to be at itsMINIMUM FOCUS DISTANCEFocusing Rail is used toPrecisely position the camerain terms ofDistance from the SubjectTechniqueFocus lens to minimum focus distanceBring the subject in focus by Moving the cameraUntil subject is in focus
Focusing Rail For Precise Focus (& Maximum Magnification)
Maximum magnification (reproduction ratio)REQUIRES the Lens to be at itsMINIMUM FOCUS DISTANCEFocusing Rail is used toPrecisely position the camerain terms ofDistance from the SubjectTechniqueFocus lens to minimum focus distanceBring the subject in focus by Moving the cameraUntil subject is in focus
Focusing Rail For Precise Focus (& Maximum Magnification)
Maximum magnification (reproduction ratio)REQUIRES the Lens to be at itsMINIMUM FOCUS DISTANCEFocusing Rail is used toPrecisely position the camerain terms ofDistance from the SubjectMaximum Magnification TechniqueSet lens focus distance to minimumBring the subject in focus by Moving the cameraUntil subject is in focus
Hands On TimeMinimum Focus DistanceDistance at which Magnification is Greatest
Maximum is infinity for the two at leftLess than 4 feet for the one above
75-300 @ 30075-300 @ 300+ 1.4 X T-CAs on left+ Close-up LensEffect of Various Macro AccessoriesOn Image MagnificationAll images are maximum possible magnification
1:1 Macro1:1 + T-C1:1 + 36 mm tube1:1 &12 + 20 + 36 tubesExample ofLife-sized
Sensor is 1x2/3
Stamp is 1 highNOTE 1:1 means Life-sized Life-sized means 1 long subject will fit exactly on a 1 long sensor, for example At its maximum magnification (Substitute 5 for a 4x5 view camera, for example)Effect of Various Macro AccessoriesOn Image MagnificationAll images are maximum possible magnification for devices used
75-300 @ 30075-300 @ 300+ 1.4 X T-CAs on left+ Close-up Lens1:1 Macro1:1 + T-C1:1 + 36 mm tube1:1 &12 + 20 + 36 tubesSensor is 1x2/3
Stamp is 1 high
Example ofLife-sizedCan stack accessories until the lens mount pulls loose from the camera.
Note these 2 have almost the same magnification Macro lens is not essential
Basic Macro TechniquesStable Platform Manual FocusDepth of Field
Basic Macro TechniquesStable PlatformManual FocusDepth of Field
Basic Macro TechniquesStable PlatformManual FocusDepth of Field
DOF vs. Aperture105 mm 1:1 @ Max. Magnificationf/5f/11f/22f/45FocusPointSubject is less than 1 deepPut Focus Point here for max useful DOFWide openDOF is a fraction of a mmCentered on focus pointDOF in front of focus point is wasted
Fixed Aperture; Changing Focus PointImage Size (& Composition) Changes
Focus point distance increases from left to right aboveCamera position & all other settings remain constantNOTE - Subject size shrinks as focus distance increasesWont work for focus stacking (combining multiple exposures to increase DOF)But thats another subject entirely (& a focusing rail job)Except for focal pointSame as previousslide at f/11
Hands On TimeStations CanonNikon4/3 & MirrorlessDownload & ReviewTry your hand using the available accessoriesAsk lots of questionsHave lots of funHands-on Time