Macro · APS-C

Nikon Nikkor AF-S 40mm f/2.8G DX Micro

The Nikon Nikkor AF-S 40mm f/2.8G DX Micro is a APS-C prime lens (40 mm, f/2.8) for Nikon F. It belongs to the macro class — ideal for close-ups of insects, flowers, products and details at up to life size.

40 mmf/2.8Nikon F
40 mm
Focal length
f/2.8
Maximum aperture
39°
Diagonal angle of view (APS-C)
APS-C
Designed for

Specifications#

Brand
Nikon
Model
Nikkor AF-S 40mm f/2.8G DX Micro
Lens type
Macro
Focal length
40 mm
Maximum aperture
f/2.8
Image circle
APS-C (23.5×15.6 mm)
Mount(s)
Nikon F
Projection
Rectilinear
Autofocus motor
silent wave (AF-S)
Lensfun correction profile
Yes — distortion/vignetting/TCA

Equivalent focal length on different cameras#

Field of view and depth-of-field equivalence when this lens is used on bodies with different sensor sizes (natively or via an adapter).

Camera formatAt 40 mmEquiv. aperture (DoF)
APS-C60 mm · 39°f/4.2
APS-C (Canon)64 mm · 37°f/4.5
Micro Four Thirds80 mm · 30°f/5.6

Depth of field & background blur#

Computed on its native APS-C format (CoC 20 µm). “Blur @2 m” is the size of an out-of-focus point at infinity, as a percentage of frame width, with the subject at 2 m — a simple bokeh index. Full table: 40 mm f/2.8 on aps-c.

FocalApertureat 1 mat 2 mat 5 mat 10 mHyperfocalBlur @2 m
40 mmf/2.86.6 cm27.0 cm1.75 m7.71 m29.3 m1.2%
40 mmf/49.4 cm38.7 cm2.58 m12.8 m20.5 m0.9%
40 mmf/818.9 cm79.6 cm6.34 m379 m10.3 m0.4%

Handheld & night-sky limits#

NPF assumes typical 20–24 MP sensors (≈6 µm pixels on full frame, ≈3.9 µm on APS-C, ≈3.3 µm on Micro Four Thirds).

BodyMin. handheld shutter (longest focal)500 rule at 40 mmNPF at 40 mm, f/2.8
APS-C1/60 s8 s5 s
APS-C (Canon)1/60 s8 s5 s
Micro Four Thirds1/80 s6 s5 s

Adapt it to other systems#

Frequently asked questions#

Is the Nikon Nikkor AF-S 40mm f/2.8G DX Micro full frame?

No — it is designed for APS-C sensors. On a full-frame body it vignettes or triggers crop mode.

What is the Nikon Nikkor AF-S 40mm f/2.8G DX Micro equivalent to on APS-C?

Its focal length is already the real value for APS-C: 40 mm frames like 61 mm on full frame.

What is the Nikon Nikkor AF-S 40mm f/2.8G DX Micro good for?

As a macro it suits close-ups of insects, flowers, products and details at up to life size.

Sources & licences#

Last updated October 03, 2026 · How we calculate · Sources