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Sony FE 40mm f/2.5 G Lens

BH #SO4025G • MFR #SEL40F25G
Sony FE 40mm f/2.5 G Lens
Key Features
  • E-Mount Lens/Full-Frame Format
  • Aperture Range: f/2.5 to f/22
  • Three Aspherical Elements
  • Minimum Focus Distance: 11"
A classic wide normal focal length prime lens, the FE 40mm f/2.5 G from Sony is characterized by its ultra-compact form factor. The versatile focal length suits shooting everything from street to landscapes, portraiture, and documentary subjects, and it features an advanced optical design for well-corrected imagery with a high degree of sharpness and clarity. Additionally, the ultra-compact form factor makes it effortless to have handy at any time.
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Sony FE 40mm f/2.5 G Overview

A classic wide normal focal length prime lens, the FE 40mm f/2.5 G from Sony is characterized by its ultra-compact form factor. The versatile focal length suits shooting everything from street to landscapes, portraiture, and documentary subjects, and it features an advanced optical design for well-corrected imagery with a high degree of sharpness and clarity. Additionally, the ultra-compact form factor makes it effortless to have handy at any time.

The lens design includes an extra-low dispersion and aspherical elements to reduce a variety of aberrations, color fringing, and distortion. The optics are complemented by a Nano AR II coating that also suppresses flare and ghosting for improved contrast. Balancing the optics is an XD Linear Motor system that uses two separate focusing motors to deliver especially quiet, precise, and quick autofocus performance. The lens also sports a dust- and moisture-sealed design to support shooting in inclement conditions.

Designed to achieve notably high resolution and sharpness through the correction of a wide variety of spherical and chromatic aberrations, this lens features a robust and intuitive-to-handle physical design to benefit both photography and cine applications.
This 40mm lens is designed for full-frame Sony E-mount mirrorless cameras; however, it can also be used with APS-C models where it provides a 60mm equivalent focal length.
Aspherical elements are incorporated into the optical design and feature superior surface precision for effective control over astigmatism, field curvature, coma, distortion, and other spherical aberrations for a high degree of sharpness and accurate rendering.
Two XD Linear Motors, along with an internal focusing design, provides quick, quiet, and precise autofocus performance. This design also contributes to more natural, intuitive Linear Response manual focus control and an AF/MF switch is located on the lens barrel for tactile control over this setting.
A focus hold button is featured on the lens barrel for intuitive tactile control and rapid access to select settings.
Physical aperture ring can be de-clicked for smooth, silent aperture switching to benefit video applications.
Dust- and moisture-sealed design better permits working in inclement conditions and rubberized control rings benefit handling in colder temperatures.
Rounded 7-blade diaphragm contributes to a pleasing bokeh quality when employing selective focus techniques.
UPC: 027242922600

Sony FE 40mm f/2.5 G Specs

Focal Length40mm
Maximum Aperturef/2.5
Minimum Aperturef/22
Lens MountSony E
Lens Format CoverageFull-Frame
Angle of View57°
Minimum Focus Distance11" / 28 cm
Maximum Magnification0.2x
Optical Design9 Elements in 9 Groups
Diaphragm Blades7, Rounded
Focus TypeAutofocus
Image StabilizationNo
Filter Size49 mm (Front)
Dimensions (ø x L)2.7 x 1.8" / 68 x 45 mm
Weight6.1 oz / 173 g
Packaging Info
Package Weight0.695 lb
Box Dimensions (LxWxH)4.7 x 4.2 x 3.4"

Sony FE 40mm f/2.5 G Reviews

It's a lot better than I expected

By Alex
Rated 5 out of 5
Date: 2021-11-04

Bought this for its mini size. Since I already invested in 24, 35 & 50 GM + a 55 Zeiss. so I selected this 40mm to use on A7C as a backup (I would pick 35 if this is my primary lens). The lens is in perfect balance with A7C, the fast and quite focusing is great shooting on street. The image is crispy and bright. 40mm doesn't feel too different from 50 for some reason and I can switch to APSC mode to shoot portrait for better reach. The only thing I don't like is that funny looking cap, so I bought a Hoage bayonet cap, not a screw on but made for this lens, now I have a really handsome package. Highly recommend this lens, but not as alternative to GM.

Great compact lens

By Chris
Rated 5 out of 5
Date: 2021-08-23

Bought this for a walk around lens to shoot street photography with. I love the aperture ring for quickly controlling depth of field. The build quality is very nice, nicer than the Fuji 23mm F2 (I moved from Fuji). It's very small and light, too. I've made some nice portraits with this as well. At 2.5 it's very sharp with nice bokeh. Really the perfect lens unless you do a lot of night photography and are not obsessed with 1.4.

Great lens

By Judith
Rated 5 out of 5
Date: 2021-08-19

Pro photographer who shot with Panasonic and wanted to try a full frame Sony (A7II). This 40 mm prime lens has fast auto focus and is versatile for landscapes, portraits, street and macro work. Its light weight will be good for travel. A fine premium lens.

Great lens

By Patrick
Rated 4 out of 5
Date: 2021-08-17

Great lens, I love it so far. Great image quality, not an easily noticeable amount of any kind of aberrations. My only complaint is that it's not faster - f/1.8 would have been nice.

What a lens

By Jeff
Rated 5 out of 5
Date: 2021-09-17

This is such a natural focal length. It's a great go-everywhere kit with the A7C - particularly if you like M mode shooting. The build is excellent like the other lenses in this series, and the optical performance is really excellent, and that extends corner to corner when stopped down only a bit.

Awesome lens for when size matters

By allenk1
Rated 4 out of 5
Date: 2021-09-08

[This review was collected as part of a promotion.] Build Quality: The SEL40F25G is an objectively well-built lens. The body is made out of aluminum and feels nice in the hand. The aperture ring clicks into place nicely and the focus ring is buttery smooth. For the size, it’s well put together, premium feeling lens. Performance: The SEL40F25G is a very quick lens. The autofocus is quick and works very quietly. Bokeh is nice and creamy as well. I do wish it were a bit faster, but understand that some compromises need to be made to make the lens as compact as it is. Compared to some of the Zeiss Batis primes and GM zooms I have, I do still prefer the images coming out of those lenses, but they also cost considerably more. Size: I got an a7c for the days where my a9 + GM lenses are just too heavy to lug around. The SEL40F25G is a perfect complement for the a7c. It’s a smidge taller than the a7c’s kit lens and much shorter than my 50 f/1.8. This keeps everything nice and compact while still capturing shots with excellent quality. Overall, the SEL40F25G is a great lens. There are similar lenses that are faster, smaller, or cheaper, but the SEL40F25G strikes a nice balance between build quality, speed, and size that is hard to match in the market. So why not 5 stars? It comes down to price. I understand that there is a lot of engineering that goes into making something this good and this small, but it's a pricey proposition. *Disclaimer: I received this product at a discounted price in exchange for my honest opinion

Sony FE 40mm F2.5 G Full-frame ultra-com

By mnawabi99
Rated 5 out of 5
Date: 2021-09-04

[This review was collected as part of a promotion.] Bought this lens for a quick lightweight prime lens. Super light and compact. 40mm is an amazing focal length too, not too wide, not too narrow. I was able to get decent landscapes and great portraits. The color and clarity of its pictures is spot on. Being able to manually set the aperture is a definite plus. The Bokeh is unreal. I see this being my go to lens for my landscape photography. The aperture ring is solid. It’s not going to move around accidentally. Auto focus is superb. Excellent walk-around lens. ** Used with a Sony a7iii mostly portrait and some landscape shots. ***disclaimer that I received this product at a discounted price in exchange for my honest opinion***

I'm glad I got this

By Farid
Rated 5 out of 5
Date: 2021-08-31

I'm glad I got this lens. I also have the 24mm G from the same series. I would rate the sharpness a 5 in the middle and 4 in the corners. It's been a very good all around lens for me. I used it instead of a 50 mm and it feels not too tight or too wide. I do however reach for my 24 mm often to get the wider angle of view but that may be a personal preference rather than anything to do with quality of the lens.

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That allows you to easily see what aperture you are in without having to look at the camera. Some people like the old school dials like that since they do not have to keep looking at the camera LCD to see what aperture they are on.
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Date published: 2021-09-09

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Do focus ring and aperture control ring work without lens communication? Since they are built onto the lens is it possible to adapt it onto other camera bodies via adapters that don't have lens communication? For instance, l mount bodies.
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This lens offers control of the aperture via the camera when setting the aperture ring to A or manual control directly on the ring. This is available on Sony E mount bodies only.
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Date published: 2021-06-24

Does this lens breath?

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Asked by: Douglas
This lens is brand-new and hasn't been tested, but it most likely exhibits minimal breathing.
Answered by: Boyd
Date published: 2021-04-17

Are these lenses weather sealed?

Are these lenses weather sealed?
Asked by: Marcelo
The Sony FE 40mm f/2.5 G Lens does have weather sealing that is designed to make the lens dust- and moisture-resistant, but Sony states that it is not guaranteed to be 100% dust- and moisture-proof.
Answered by: Manzell
Date published: 2021-06-08

So is this Sony's answer to the next iteration of ...

So is this Sony's answer to the next iteration of RX1r iii? No need because you have the 7C with one of these?
Asked by: Jay
Great question and we will have to wait and see. I’ve used both generations of the RX1 and both time found myself wishing I had a little more focal length at times and others a wider AOV. Still the appeal of a fixed lens P/S goes back to the Nikon 28&35 Ti’s, the Contax T2 and the Yashica T4. Today we have the Zeiss ZX1, Leica Q2 and two monsters in the category the Fuji X100’s and Ricoh GR series. There is a draw by some for a fixed lens high end camera with minimal options. We’ll have to wait and see what Sony does. Personally I am thinking the A7C with the 40mil would be a perfect companion for my Leica CL and 40mm C Summicron.
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Date published: 2021-04-21

is there a chance a 35mm will ever be released in ...

is there a chance a 35mm will ever be released in this line of small G lenses?
Asked by: Bozmund
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Answered by: Dan
Date published: 2021-04-23

Why are they so expensive?

Why are they so expensive?
Asked by: Bijo
Comparatively it isnt
Answered by: Anonymous
Date published: 2021-05-18

How does this lens compare to weather resistance ...

How does this lens compare to weather resistance and size to the Zeiss FE 35mm 2.8 which I already own?
Asked by: Howard
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Answered by: Manzell
Date published: 2022-01-02
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