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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: 9.8"
A comfortable focal length with an especially portable design, the Sony FE 40mm f/2.5 G is a versatile prime; an ideal single focal length option for a broad variety of situations. This lens's smart build and sophisticated G Series optics mix with intuitive handling and the sleek form factor to make it a go-to option for anything from street to landscape to travel applications.
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Sony FE 40mm f/2.5 G Overview

  • 1Description
  • 2Wide-Normal Portable Prime
  • 3Matched Set of Compact Primes
  • 4G Lens Series
  • 5Focus Control for Stills and Video
  • 6Sleek-but-Robust Design
By B&H Photo's
Wide-Normal Portable Prime
A comfortable focal length with an especially portable design, the Sony FE 40mm f/2.5 G is a versatile prime; an ideal single focal length option for a broad variety of situations. This lens's smart build and sophisticated G Series optics mix with intuitive handling and the sleek form factor to make it a go-to option for anything from street to landscape to travel applications.
Matched Set of Compact Primes
Together with the FE 24mm f/2.8 and 50mm f/2.5 G lenses, these three lenses form a cohesive trio with similar styling, image quality, and ergonomics:
  • All lenses prioritize a compact profile with an emphasis on intuitive handling; each features a manual aperture ring along with other tactile controls.
  • The three lenses share the same 49mm filter ring diameter.
  • Matched aluminum finish with stylish focal length and aperture engravings, both aperture and focusing rings, and matching metal lens hoods.
G Lens Series
  • Three aspherical elements promote more uniform sharpness across the frame by suppressing spherical aberrations and distortions.
  • Rounded 7-blade diaphragm contributes to a pleasing bokeh quality when employing selective focus techniques.
Focus Control for Stills and Video
  • Two linear motors deliver quick and accurate autofocus performance, along with capable subject tracking for working with fast-moving subjects. This AF system is also especially quiet to suit its use for cine applications.
  • Internal focusing design limits the overall length of the lens for faster, more responsive focusing.
  • Linear Response manual focus control offers more natural handling and an AF/MF switch is located on the lens barrel for tactile control over this setting.
  • Customizable focus hold buttons are present on the lens barrel for intuitive tactile control and rapid access to select settings.
  • Impressive close-up performance for working with close-up subjects; this lens has a minimum focusing distance of 9.8" with MF (11" with AF), which results in a 0.23x maximum magnification.
Sleek-but-Robust Design
  • Physical aperture ring can be de-clicked for smooth, silent aperture switching to benefit video applications.
  • Lens measures 1.8" and weighs 6.1 oz, making it a great portable choice that's well-suited to both full-frame and APS-C bodies.
  • Dust- and moisture-sealed design better permits working in inclement conditions.
  • Fluorine-coated front element is easy to clean and resists dust, moisture, and fingerprints.

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 Distance9.8" / 25 cm
Maximum Magnification0.23x
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

40mm f2.5

By William
Rated 4 out of 5
Date: 2022-10-20

Small, light, feels well built. Sharp at all apertures. Good tactile feedback on the aperture ring. Would recommend to a friend.

Perfect mate for Any a7C

By Ken
Rated 5 out of 5
Date: 2022-03-09

This is a surprisingly good lens, considering its small size and weight. I like the imagery, color, and contrast. It focuses fast and accurately, is well-built, and has useful buttons, switches. I also like the aperture ring with a click/de-click button (!) plus the AF/MF switch, as well. It pairs perfectly with the a7C, creating a very light, versatile, easy to carry around kit. I have a feeling it will also find it's way onto my A7IV.

Great balance of size and quality

By Josh
Rated 5 out of 5
Date: 2022-02-21

This has rapidly become my default lens, and then I'll switch to a different lens if the situation calls for it. Image quality has been great, autofocus has been great. The only real complaint I have with this lens is that sometimes I want more bokeh, but it really has plenty for most situations. If you need maximum bokeh, you're probably going to be using a noticeably heavier lens. In addition to the typical uses, I think the extra field of view from the 40mm lens (compared to the 50mm f/2.5) is perfect if you plan to occasionally use your camera for video conferencing with it mounted to the back of your desk.

Needed a walk-around lens

By Matthew
Rated 5 out of 5
Date: 2022-02-01

This lens really fits a need. I use mostly primes, including a Batis 25/2 which I love. I am excited to bring this back out when the weather gets nicer. I wish it was a bit wider like 35. It is sharp and solid

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.

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.

Terrific weight, size, quality

By Alan
Rated 5 out of 5
Date: 2022-06-22

Really, it is sharp. Mostly I'm using it at f5.6 to 11 but landscapes and interior view at 2.5 were excellent. Color is fine. Focus hold works. Yeah, I wish it had been cheaper, but it will allow me to travel almost comfortably with my Sony A7R3 around my neck rather than my lovely lightweight Fuji XE2. Attached photos are all jpegs processed and sharpened in LrC. I highly recommend it based on quality alone. Its low weight is a major benefit and the low profile makes it even more mobile. I only shoot stills, so I can't comment on video.

Like Air!

By Chang
Rated 5 out of 5
Date: 2022-04-28

Amazingly light and sharp little lens! great for walk around or small outings where you don't want to bring a chunky lens.

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