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Sony FE 35mm F1.8 vs Sony FE 40mm F2.5 G

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

SonyFE 35mm F1.8SonyFE 40mm F2.5 G
Overview
ReleasedAugust 2019April 2021
Optics
Lens typePrimePrime
Focal length35 mm40 mm
Maximum aperturef/1.8f/2.5
Minimum aperturef/22f/22
Optical construction11 elements in nine groupsNine elements in nine groups
Special elementsOne aspherical elementThree aspherical elements
DiaphragmNine rounded bladesSeven rounded blades
Angle of view63° full frame; 44° APS-C57° full frame; 39° APS-C
Mount and compatibility
MountsSony ESony E
Image circleFull frameFull frame
Image circle detailFull-frame coverage; 52.5 mm equivalent field of view on APS-CFull-frame coverage; 60 mm equivalent field of view on APS-C
Teleconverter supportNot compatible with SEL14TC or SEL20TCNot compatible with SEL14TC or SEL20TC
Focus and stabilisation
AutofocusYesYes
Minimum focus distance0.22 m0.25 m (manual focus)
Maximum magnification0.24×0.23× (manual focus)
Optical stabilisationNoNo
Autofocus detailLinear motor; internal focusingTwo linear motors; internal focusing. Maker does not designate these motors XD
Focus distance detailMinimum focus 0.22 m; Linear Response MFMinimum focus 0.28 m in AF or 0.25 m in MF; Linear Response MF
Magnification detail–Maximum magnification 0.20× in AF or 0.23× in MF
Stabilisation detailNo lens stabilisation; compatible bodies provide stabilisationNo lens stabilisation; compatible bodies provide stabilisation
Video featuresInternal focusing reduces changes in angle of view during focusing; quiet focus drive supports fine continuous focus movements–
Design
Dust and moisture resistantYesYes
Filter diameter55 mm49 mm
Maximum diameter65.6 mm68 mm
Length73 mm45 mm
Weight280 g173 g
ControlsAF/MF switch and one customisable focus-hold buttonAperture ring with click on/off switch, AF/MF switch and one customisable focus-hold button
Filter detail55 mm front filter thread; front element does not rotate during focusing–
Weather resistanceDust- and moisture-resistant design; not guaranteed completely dust- or moisture-proofDust- and moisture-resistant design; not guaranteed completely dust- or moisture-proof
Dimensions detailAluminium-alloy exterior; internal focusing preserves overall lengthAluminium exterior and hood; internal focusing preserves lens length
Weight detailApproximately 280 g lens; separate hood and caps excludedApproximately 173 g lens; separate hood and caps excluded
Lens hoodALC-SH159 petal bayonet hoodALC-SH166 cap-type hood
In the boxALC-SH159 hood, ALC-F55S front cap and ALC-R1EM rear cap; no case listedALC-SH166 hood, ALC-F49S front cap and ALC-R1EM rear cap; no case listed
Release detailSony Japan specified 30 August 2019; main date retains month precision for regional release. Amateur Photographer Andy Westlake tested an Alpha 7R III; Photography Blog Mark Goldstein used an Alpha 7 III. Their distortion type/severity, wide-open sharpness and close-up blur judgments differ and are retained. Maker weight 280 g supersedes Blog 281 g; no case is listed in the maker specifications despite Blog mentioning oneSony Europe specified April 2021 availability, separately from the 23 March announcement. Photography Blog Mark Goldstein and Digital Camera World Rod Lawton independently reviewed this exact model; shading judgments differ. Sony specifies two linear motors and three aspherical elements; no XD, ED or fluorine designation is borrowed from Photography Blog’s conflicting description

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