Amateur Photographer - UK (2020-03-28)

(Antfer) #1

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LENS TEST Testbench

Resolution

Cornersharpnesslagssomewaybehindthatof
centresharpnessatthewideendofthezoom.Edge
sharpnessimprovesasyouzoomin,withbetter
figuresrecordedat35mmbetweenf/5.6andf/8.
Sharpnessdropsoffa touchatthelongend,but
remainsrespectablefora general-purposelens.
You’llnoticediffractionstartstoaffectoverall
sharpness when stopping down to f/16 and f/22.

16mmcentre
35mmcentre
80mm centre

16mmcorner
35mmcorner
80mm corner

FujinonXF16-

80mm F4 R OIS WR

Curvilineardistortion

WithFujifilm’sbaked-inautomateddistortion
correction,userscanexpectwell-correctedJPEG
andrawformatimageswithnoobviouscurvilinear
distortion.Toviewthenaturalbehaviourofthelens
withoutanyautomatedcorrectionsappliedyou’ll
need to research the Adobe plug-in workarounds.

Shading

Ourteststellusthatthecornersappearjust0.3EV
and0.4EVdarkerthanthecentrewhentheaperture
is setwideopenat16mmand80mmrespectively.
Thevignettingcorrectionthat’sbuiltintotheraw
filemetadatadoesanexcellentjobofcorrecting
cornershadingwhenfilesareprocessed through
Adobe Camera Raw and Lightroom.

16mm f/4 80mm f/4

16mm 80mm

SMIA TV = -0.4% SMIA TV =-0.2%

X-seriesuserswho’vebeenwaitingfora
versatilezoomthatcanshootwiderand
longerthantheXF18-55mmF2.8-4R LM
OIS,butalsowanta lensthat’scheaperthan
theXF16-55mmF2.8R LMWR,willbe
verytemptedbytheXF16-80mmF4R
OISWR.It’sa verylikeablegeneral-purpose
lensthat’sidealfortravellingwhereyoucan
seeyourselfwantingtoshootwideangleone
minuteandat mid-telephotothenext,but
don’talwayshavetimeortheinclinationto
swapbetweendifferentlenses.It’snotquite
assharpassomemighthopefortowards
theedge,whichis wheretheoptically
stellarXF16-55mmF2.8R LM WR
presentsanadvantage.
In summary,thiszoom
putsin a performance
thatreflectsitsprice.
Theopticalstabilisation
is highlyeffective,it’sa
practicalsizewithout
beingtoobulky,andthe
buildqualityis suchthat
it feelsrobustenoughto
enduredailyuse.It’llbe
a greatlong-term
partnerforFujifilm’s
weather-sealedX-series
camerasanda very
appealing one at that.

Verdict

Shootin rawandyou’llfindchromaticaberrationis virtually non-existentFujifilm X-T3, 1/2900sec at f/5.6, ISO 200


Price£769
Filterdiameter72mm
Lenselements 16
Groups 12
Apertureblades 9
Aperturef/4-f/22
Minimumfocus
distance35cm
Dimensions
78.3x88.9mm
Weight440g
LensmountFujifilm
X-mount
Included
accessoriesLens
caps,lenshood,
wrapping cloth

Data file

howsharpit is throughitszoomrangeandhow
wellthelens-specific metadatathat’saccessed
automaticallybytherawconvertercorrectsfor
opticalflawssuchasvignettinganddistortion.
OurAppliedImagingteststellusthelens
producesitssharpestresultsin thecentreat
thewideendof thezoom,howeverit should
benotedthatsharpnessat theedgesat 16mm
is considerablysofter,withlittleimprovement
tobegainedfromstoppingdown.Though
centresharpnessfiguresat themidpointand
longendof thezoomdon’tquitematchthose
recordedat thewideend,userswillbeableto
makeoutthatcornersharpnessis superior,
withbetteredge-to-edgesharpnesslevels
beingrecordedbetweenf/5.6andf/8at
35mmand80mmthanat 16mm.To
preserveoptimumsharpnessusersshouldtry
tosteerclearof stoppingdownbeyondf/16as
thisis wherediffractionbeginstohavean
effectonsofteningimages.Thosewho’dliketo
createattractivebackgroundbluranda
pleasingseparationbetweennearandfar
subjectscaneasilydosobyusingthelensat
thelongendwiththeaperturesettoits
maximumf/4opening.
Chromaticaberrationis handledreasonably
wellin JPEGimages,althoughI didobserve
somepurplefringesof colouralonghigh-
contrastedgesin thefarcornersof wideshots
capturedat 16mmat f/4.Userswhoshootin
rawbenefit fromFujifilmdeliveringitslens
correctionsvialens-specific metadata.When
youopena rawfile thismetadatais accessed
bytherawconverteryouuse,meaningyou
don’thavetheextrastepof havingtoenable
lensprofile corrections.Inspectinghundredsof
rawfilesrevealedthelens-specific metadatais
extremelyeffective.It doesa fabulousjobof
keepingvignettingat wideaperturesunder
controltothepointyoucan’tvisuallytellif the
cornersareanydarkerthanthecentre.Barrel
distortionat thewideendof thezoomaswell
aspincushiondistortionat longerfocal
lengths is extremely well corrected for.


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