Kenko MIRROR LENS 400mm F8 User manual

Thisisatelephotolensforasingle-lensreflex
cameraorinterchangeablelensmirrorlessdigital
camera,adoptingreflectiveopticstoachievealong
focallengthwithinacompactbody.
1.NameofEachPart
3.T-Mount
⑨Outerscrew
(threelocations)
⑩Outerring
⑪Innerring
YoumustadjustthepositionoftheT-mounttoadjustthe
positionofthelens.RemovetheT-mounttoattachrear
filterstothelens.
Usethefollowingproceduretoadjustthepositionofthe
T-mountorremovetheT-mount:
2.AttachingtheLenstotheCamera
AligntheindicatormarksontheT-mountandthecamera,
andthenturnthelensuntilyouheara“click.”
(Forattachmentandremoval,referto“AttachingtheLens”
and“RemovingtheLens”inyourcamera'smanual.)
Checktheattachedlensforanylooseness.
Somecamerasmustbesetuptobetouseamanuallens
priortolensattachment.Setupyourcamerabyreferring
totheinformationprovidedbelow.Fordetails,referto
yourcamera'smanual.
Turnthelensuntilthedistancescaleindicatorcomestothe
topcenter,andthensecurelytightentheouterscrews⑨
(threelocations)asshowninFig.2.
Slightlyloosentheouterscrews⑨(threelocations)as
showninFig.2.

＊Donotloosenthescrewstoomuch,becauseitmaycause
theinnerringoftheT-mount(⑪inFig.2)tocomeoff.
＊Useacommerciallyavailableprecisionscrewdriverto
loosenthescrews.
2
1
RemovetheT-mountfromthelensbyturningtheT-mount
counterclockwisewhileholdingthelenswiththeotherhand.
Slightlyloosentheouterscrews⑨(threelocations)as
showninFig.2.

＊Donotloosenthescrewstoomuch,becauseitmaycause
theinnerringoftheT-mount(⑪inFig.2)tocomeoff.
＊Useacommerciallyavailableprecisionscrewdriverto
loosenthescrews.
2
Takethelensoffthecamerafirst.
3
1
Note:Iftheouter
screws⑨areloos-
enedtoomuch,the
innerring ⑪may
comeoff.
If the distance scale indicator mark (⑤in Fig. 1)
doesn't align at the top center of the lens when itis
attached to the camera, make an adjustmentwith the
following procedure:
Use the following procedure to remove the T-mount
from the lens:
4.SettingUptheCamera
[Fig.1 LenswithT-MountRemoved]
[Fig.1]
[Fig.2]
CameraT-mount
Asageneralguide,theshutterspeedshouldbeinarangeof
1/500to1/1000onafinedaywhentheISOsensitivityissetto
400.Ifyou'reusingadigitalsingle-lensreflexcamera,takeyour
photoswhilecheckingeachimageontheLCDmonitor:

●Theimageistoodark:Lowertheshutterspeed.
●Theimageistoobright:Raisetheshutterspeed.
Settheshootingmodeto“M(manual).”Ontheα77andcertain
othermodels,thenon-lensreleaselockfunctionmustbe
canceled.
MenuSetupMenu Changethesettingfor[Releasewithout
Lens]to[Permit].
＊Theaperturecan'tbeadjustedintheapertureprioritymode.
＊Theaperturevalueisn'tdisplayedunder“Exif.”
●Sony α
The“M(manual)”modeand“Av(aperturepriority)”shooting
modecanbeused.
Whenusingthebuilt-inhand-shakecorrectionfunction,setthe
“LensFocalLength”onthe“FocalLengthEntry”screen.
＊Theaperturecan'tbeadjustedintheapertureprioritymode.
＊Theaperturevalueisn'tdisplayedunder“Exif.”
●Pentax
⑨
⑨⑨
⑩
⑪
101215203050100ftMACRO
33.54568101530m1:3.51:41:4.5
101215203050100ftMACRO
33.54568101530m1:3.51:41:4.5
101215203050100ftMACRO
33.54568101530m1:3.51:41:4.5
② ③ ⑤①
④
⑦
⑥
⑧(Inside)
⑨
＊TheshapeoftheT-mountvariesamongthedifferentcamerabrands.
＊TheshapeoftheT-mountvariesamong
 thedifferentcamerabrands.
Brightness
Lensconstruction
Minimumfocusdistance
Macromagnificationfactor
Filterdiameter
(diameteroffilteratrearoflens)
Maximumdiameter
Overalllength(excludingT-mount)
Weight(excludingT-mount)
F8(fixed)
2groups,6lenses
1.15m
1:2.5
67mm＊
(30.5mm)
φ74mm
82mm
340g
5.PerformanceTable
InstructionManual
3-9-19Nishi-Ochiai,Shinjuku-ku,Tokyo161-8570
http://www.kenkoglobal.com
①Focusring
②Distancescale(infeet)
③Distancescale(inmeters)
④Macromagnificationscale
⑤Distancescaleindicatormark
⑥T-mountadapter(Soldseparately)
⑦T-mountattachmentthread
⑧Filterattachmentthread(Insideofrear)
⑨Filterattachmentthread(Front)
Tip
＊Beforeattachingafiltertothefrontofthelens,besurethefilter
won'tcontactthereflectivepart(blackcircle)atthecenterofthefront
surfaceofthelens.
Specificationsandexteriorviewsaresubjecttochangewithoutnoticefor
thepurposeofproductimprovement.
Thelenscanbeusedinthe“Av(aperturepriority)”modeand“M
(manual)”mode.

■Howtousethe“Av(aperturepriority)”mode

1.Settheexposuremodeto“Av.”
2.Correcttheexposurecompensationifnecessary.

IfthislensisusedwithaCanonEOSseriescamera,thefollowing
operationsmayberequiredonsomemodelsduetothemecha-
nismofthecamera:
• When the lens is attached, the aperture is displayed as “00.”:
Noactionisneededinthisregard.
• A value (e.g., F5 or 6) isdisplayedasan aperture when the lens
isattached:
Openuptheaperture(adjustittothesmallestvalue).
●Canon EOS Series
＊Thislenscan'tbeusedwiththeEOS-700,750and850
becausethosecamerashavenoapertureprioritymode(Av)or
manualmode(M).
＊Ifaconversionlensoranextensiontube(ring)isattached,the
camerawon'toperatenormally.Donotcombinethislenswith
theaboveitems.
＊TheFocusAidcan'tbeused.
＊Theaperturecan'tbeadjustedintheapertureprioritymode.
＊Theaperturevalueisn'tdisplayedunder“Exif.”
Thesupportedexposuremodesarelimiteddependingonthe
cameramodel.
Referto“ListofSupportedNon-CPULenses”orothersimilar
sectionsinyourcamera'smanual.
Tousethislenswithanycameralistedabove,settheshooting
modeto“M(manual).”Theshutterwon'treleaseinanyother
mode.
＊Theshutterspeedmustbeadjusteddependingonthecondi-
tioninwhichphotographsaretaken.
＊Setthefocusmodeto“MF.”
＊Theaperturecan'tbeadjustedintheapertureprioritymode.
＊Theaperturevalueisn'tdisplayedunder“Exif.”
●Nikon
D100,  D50,  D70,  D70S,  D40,  D40X,  D60,  D80,  D90, 
D5000,  D3000,  D3100
Thenon-lensreleaselockfunctionmustbecanceled.
MenuSetupMenu Changethesettingfor[Releasewithout
Lens]to[Permit].
Anyshootingmodecanbeused,exceptforthoseinwhich
priorityisgiventotheshutterspeed.Itisn'trecommendedthat
prioritybegiventotheshutterspeed(shutterprioritymode).
＊Intheprogrammode,apertureprioritymodeormanualmode,
settheISOsensitivitytoAUTO.
Menu Brightness/Color ISOSensitivity Setto[AUTO].
＊Theaperturecan'tbeadjustedintheapertureprioritymode.
＊Theaperturevalueisn'tdisplayedunder“Exif.”
●Sony NEX (E-mount)
Anyshootingmodecanbeused,exceptforthoseinwhichthe
shutterspeedisgivenpriority(shutterprioritymode).Itisn't
recommendedthatprioritybegiventotheshutterspeed.
＊Whenusingtheprogrammode,apertureprioritymodeor
manualmode,settheISOsensitivitytoAUTO.
SetupMenuExposure/LightMeasurement/ISO Setto
[AUTO].
＊Theaperturecan'tbeadjustedintheapertureprioritymode.
＊Theaperturevalueisn'tdisplayedunder“Exif.”
●Olympus Micro Four-Thirds
Thenon-lensreleasefunctionmustbesetto[ON].
SetupMenu ReleasewithoutLens Setto[ON].
Anyshootingmodecanbeused,exceptforthosegivingpriority
totheshutterspeed(shutterprioritymode).Itisn'trecommended
thatprioritybegiventotheshutterspeed.
＊Whenusingtheprogrammode,apertureprioritymodeor
manualmode,settheISOsensitivitytoAUTO.
SetupMenu ISOSensitivity Setto[AUTO].
＊Theaperturecan'tbeadjustedintheapertureprioritymode.
＊Theaperturevalueisn'tdisplayedunder“Exif.”
●Panasonic Micro Four-Thirds

• This lens is small and light,but it's still a telephoto lens with a
longfocallength.
  Generally,telephotolensesareassociatedwithasmallangleof
viewandhigherprobabilityoftheimagesbecomingblurrydue
tomagnificationsofeverymovementofthelensknowas
“camerashake”.It'srecommendedthatyousetyourcamerato
highsensitivityandahighshutterspeed,oruseastabletripod
ormonopod.
●Preventing Blurry Images
6.TakingPhotographs
Attaching the lens
❶AttachtheT-mounttothelensandthensetthelensonthe
T-mounttothecamera.
❷ProvideaT-mountappropriateforyourcamera.
[Referto3,“T-Mount.” ]
＊Multipletypesofmountsmaybeavailabledependingonthecamera
brand.Fordetails,contactthecameramanufacturer.(Four-Thirds,Micro
Four-Thirds,etc.)
❶TheT-mountisn'tattachedto
thelens.
❷TheT-mountdoesn'tmatchthe
mountonyourcamera.
Thelenscan'tbeattachedto
thecamera.
❶Securelytightentheouterscrewsusingacommercially
availableprecisionscrewdriver.
[Referto3,“T-Mount.” ]
❶Theouterscrews(three
locations)ontheT-mountare
loose.
Themountrattles.
❶LoosentheouterscrewsontheT-mountandturnthelensuntil
thedistancescaleindicatormarkcomestothetopcenter,and
thentightentheouterscrewsontheT-mount.
[Referto3,“T-Mount.” ]
❶ThelensandT-mountaren't
adjustedtoproperpositions.
Thedistancescaleindicator
markdoesn'tcometothetop
center.
❶TheT-mounthasadouble-structure.Oncetheouterscrews
(threelocations)ontheT-mountareloosenedandremoved,
placetheouterringontheT-mountagainandtightentheouter
screwsontheT-mount,andthenremovetheT-mountfromthe
lens.
[Referto3,“T-Mount.” ]
❶TheinnerringoftheT-mount
remainsonthelens.
Othermountcan'tbe
attached.
7.Troubleshooting
Youcanpreventblurryimagesbyusingacablereleaseorself-
timerfunction.
Inthiscase,besuretouseastable,sturdytripod.Ifyour
camerahasamirror-upfunction,usethefunctiontofurther
reducethepossibilityofblurring.
Tip
• When a telephoto lens is used, the magnification factor
increasesandthereforedust,watervaporandothermatter
suspendedintheairwillaffecttheimagequality.Tocapture
sharpimages,ideallyphotographsshouldbetakenonafine
daywithminimumwindfollowingseveralconsecutivefinedays,
inalocationnotsubjecttoexhaustgases,smokefrom
chimneys,etc.
●Photographing Conditions with a Telephoto Lens
Itisdifficulttocapturesharpimagesinmountainsandcoastal
areasduringthesummer,becausetheaircontainsaconsider-
ableamountofgasandwatervapor.However,yourphotogra-
phycanbemoreenjoyableifyou'lltakeadvantageofunfavor-
ableconditionstocreateworksofyourown,suchascapturing
theseathroughvibratingairorshootingtheridgelinesofmoun-
tainsveiledinhaze.
Tip
• This lens isn't linked to the auto focus function,so the focus
mustbeadjustedmanually.Tobringthesubjectintofocus,
simplyturnthefocusring.
• With a telephoto lens, the depth offield (the range inwhich the
subjectcanbebroughtintofocus)becomesshallow(=the
focusrangeissmall),soit'sdifficulttoadjustthefocus.
  Useastabletripodormonopodtoadjustthefocuscarefully.
●Adjusting the Focus
Generally,asuper-telephotolenswitharangeof300mmor
morewillhavesomeallowanceinthepositionoftheinfinitely
symbol∞.Thisisbecausetherefractiveindexoflightinair
changesasthetemperatureinthemirrorcylinderchanges,and
thefocuspositionmayshiftslightlyasaresult.Accordingly,be
suretoadjustthefocuscarefullybycheckingtheimageonthe
finderscreen,evenwhencapturingadistantview,starryskyor
otherverydistantsubject.
Tip
Ifyou'reusingadigitalcamerawithaliveviewfeature,youcan
usethezoom-infunctiontofine-tunethefocus.
Tip
• This lens employs reflective optics, so the aperture is fixed.
Accordingly,theamountoflightmustbeadjustedbychanging
theshutterspeed.(Ifyou'reusingadigitalcamera,youcando
thisbychangingtheISOsensitivity.)However,aslowshutter
speedtendstocauseblurryimages,soit'srecommendedthat
yousetyourcameratohighsensitivityanduseahigh-sensitivity
film(ISO400orbetter).
• Auto exposure is possible on nearly any camera that offers an
AEfunctionwithaperturepriority(exceptforcertainNikonand
Sonymodels)(theprogramAEandshutterpriorityAEarenot
possible).Setthecamerawithoutlenstotheaperturepriority
AEmode,andthentrytakingphotographsinabrightareaand
adarkarea.Ifyounoticethattheshutterspeeddiffersfromone
conditiontothenext,autoexposureisenabled.
●Adjusting the Exposure
Thislenshasnoelectricalcontacts,sosignalsaren'texchanged
electricallybetweenthecameraandlens.Accordingly,the
camera’sfinderdisplayorLCDscreenmaynotcomeon,but
thisdoesn'taffectthecameraorlensfunction.(It'sthesameas
takingphotographswithanastronomicaltelescopeorfield
scopeattachedtothecamera.)
Tip
Condition Remedial action
Taking photographs
❶,❷Setthenecessaryitemsbeforehandbyreferringto4,
“SettingUptheCamera,”andyourcamera'smanual.
❸Setthecamera’sfocusmodeto“MF”(manualfocus).
❶Theshootingmodedoesn't
supporttheattachedlens.
❷Thecameraisn'tsetcorrectly,
orthecameraissettodisable
theshutterreleasewhenalens
withoutelectricalcontactsis
used.
❸Thecamera’sfocusmodeis
setto“AF”(autofocus).Inthe
AFmodethecameramaynot
beabletodetectthefocus
positionofthislens,inwhich
casetheshutterdoesn't
release.
Theshutterdoesn'trelease.
❶Neitherthecameranorthelensfunctionisaffected.
❶Thislenshasnoelectrical
contacts,soitdoesn'tsendor
receiveelectricalsignals
to/fromthecamera.
Thecamera’sfinderdisplayor
LCDscreendoesn'tcomeon.
❶Turnthefocusringandmanuallyadjustthefocus.
[Referto6,“TakingPhotographs.”]
❶Thislensisamanualfocus
lens.
Autofocusdoesn'twork.
❶Firmlysecurethecamerawhentakingphotographs.
＊Theuseofatripodormonopodisrecommended.
❷Increasethedistancefromthesubject.
❸Takephotographsinaplacehavinglessairbornedust,water
vapor,exhaustgases,etc.
❹Wipecleanthelensusingasoftcloth.
[Referto6,“TakingPhotographs.”]
❶Thehandshakeswhen
photographsaretaken.
❷Thedistancetothesubjectis
tooclose.
❸Effectsofdustandwatervapor
intheair.
❹Thelensisdirty.
Imagesbecomeblurry.
❶Adjusttheexposurebychangingtheshutterspeed.
[Referto6,“TakingPhotographs.”]
❶Thislenshasafixedaperture.
Theaperturecan'tbe
adjusted.
Thislensisamono-focallens.Thecameradoesn'tzoomin.
Condition Remedial action
Cause
Other
❶Checkyourcameraforthetypeofmount,andconsultthe
dealer/retailshopwhereyoupurchasedyourlens.
❶Youcanattachvarious
T-mountssoldseparately.
Iwanttousemylenswitha
cameraofadifferenttypeof
mount(acamerafroma
differentmanufacturer).
❶Whenattachingafilterinfrontofthelens,firstconfirmthatthe
filterwon'tcontactthecenterofthefrontsurfaceofthelens.
❶[Referto1,“NameofEach
Part.”]
Afiltercanbeattachedtothe
filterattachmentthread⑧or⑨
asshownintheFig.1.
Iwanttoattachafilter.
❶Donotremovetheblackobject.It'sokaytotakeaphotograph
asis.
❶Thisisthepartofthelens
structurethatisusedtoreflect
images.
Whatappearstobeablack
capatthecenteroftheobject
lens(lensonthesubjectside)
doesn'tcomeoff.
❶Oncameraswithapertureprioritymode,thisproblemcanbe
compensatedtosomeextentbycorrectingtheexposure.On
modelsthatonlyhavethe“M(manual)”mode,thelensislinked
neithertotheAEfunctionnortotheexposuremeterinthe
camera.
Whenusingsuchacamera,refertotheinstructionmanualfor
informationontheappropriateshutterspeed.
❶Theexposureissignificantly
off.
Photographsareallwhiteor
allblack.
Condition Remedial actionCause
Cause