Introduction
The Sigma 18-50mm F2.8 DC DN Up to date for both Sony E-Mount or L-Mount is a brand new quick normal zoom lens for Sony, Leica, Panasonic and Sigma APS-C sensor mirrorless cameras, the place it supplies a 27-75mm equal focal size vary in 35mm full-frame phrases.
The Sigma 18-50mm F2.8 was first introduced in October 2021. This lens is designed and made in Japan.
The optical method is comprised of 13 components in 10 teams, together with 1 Particular Low Dispersion (SLD) lens to cut back chromatic aberrations and coloration fringing and three aspherical lenses to restrict distortion and spherical aberrations.
This lens has a minimal focusing distance of 12.1cm / 4.8″ with a most magnification ratio of 1:2.8 on the 18mm focal size.
It contains a rounded 7-blade diaphragm which creates a gorgeous blur to out-of-focus areas of the picture and an inner focusing mechanism which suggests the lens barrel would not transfer.
This lens makes use of a stepping motor for quick, quiet and exact auto-focusing and full-time handbook focus override can be potential.
The Tremendous Multi-Layer coating helps to make sure that flare and ghosting are well-controlled even in backlit circumstances.
The Sigma 18-50mm F2.8 DC DN Up to date lens is is on the market in Sony E-Mount and L-Mount variations and is priced at £429 / $549 within the UK and USA, respectively.
Ease of Use
Given the quick and fixed f/2.8 most aperture, the Sigma 18-50mm F2.8 DC DN Up to date is a surprisingly small and light-weight lens, measuring nearly 7.6cms in size and weighing in at a mere 290g / 10.2oz, but it nonetheless manages to keep up a continuing aperture of F2.8 all through the whole zoom vary.
This makes it essentially the most compact normal zoom lens in its class, when assessed as an AF suitable, F2.8 fixed aperture zoom lens for APS-C sensor cameras.
As demonstrated by the product photos, it is an incredible match for a small digicam just like the Sony A6000 that we examined it with, the place it feels very effectively balanced.
Construct high quality is great given the reasonably priced price ticket. The lens has a plastic shell with a mix of metallic components and a compound materials, TSC (Thermally Secure Composite), used inside.
It additionally incorporates a brass bayonet mount that is speculated to be extra sturdy than a traditional metallic mount. The optical components are manufactured from high-grade glass.
The Sigma 18-50mm F2.8 DC DN Up to date feels strong sufficient in your hand, regardless of its principally polycarbonate building.
The zoom ring is generously extensive and has a tactile ridged, rubberised grip band that has a easy motion.
The lens extends by about an additional 4cm when absolutely zoomed out to 50mm.
The focusing ring is on the slender aspect and is positioned nearer to the lens mount, making it simpler to find in a rush.
The Sigma 18-50mm F2.8 DC DN Up to date contains a stepping motor that permits for nearly silent auto-focusing, making it well-suited to video use.
Importantly, the lens is absolutely suitable with the “Direct Handbook Focus (DMF)” system characteristic of Sony cameras that allows the person to immediately change between autofocus and handbook focus.
Focusing is absolutely inner however zooming will not be, with the size of the lens altering as you zoom from 18mm to 50mm.
In use, we discovered the focusing system to be quiet, quick and dependable with the lens mounted on a Sony A6000 digicam.
The Sigma 18-50mm F2.8 DC DN Up to date is not weather-proof, aside from the mount having a rubber seal, and it would not have built-in picture stabilisation, that are the 2 major concessions that it makes with a purpose to be each reasonably priced and small.
The lens is equipped with plastic lens caps and a plastic flower-shaped lens hood (LH582-02) – there isn’t any lens bag included. The filter measurement is 55mm.
Focal Vary
On the 18mm focal size the angle of view is 76.5 levels.
18mm
On the 50mm focal size the angle of view is 31.7 levels.
50mm
Chromatic Aberrations
Chromatic aberrations, usually seen as purple or blue fringes alongside contrasty edges, are effectively managed with this lens.
Vignetting
With the Sigma 18-50mm F2.8 DC DN Up to date extensive open at f/2.8, you’ll be able to see some noticeable gentle fall-off within the corners. Stopping down helps, though to utterly eliminate this phenomenon, you will have to make use of an f-stop of a minimum of f/5.6 or smaller.
18mm
50mm
Distortion
There’s numerous barrel and pin-cushion distortion evident in each the JPEG and RAW information which you will have to appropriate in post-processing till an acceptable lens profile is launched on your modifying software program.
18mm
50mm
Sunstars and Flare
The Sigma 18-50mm F2.8 DC DN Up to date produces fairly good sunstars when stopped-down to f/22, as proven beneath, though it it a bit of vulnerable to flare when capturing instantly into the solar.
18mm
50mm
Macro
The Sigma 18-50mm F2.8 DC DN Up to date doubles up as a reliable macro lens, delivering nearly half-size magnification and really shut focusing at 18mm.
The close-focus level is a formidable 12.1cm from the movie/sensor aircraft on the 18mm focal size (30cm at 50mm) and it has a most magnification ratio of 1:2.8 on the 18mm focal size (1:5 at 50mm).
Bokeh
Bokeh is a phrase used for the out-of-focus areas of {a photograph}, and is normally described in qualitative phrases, comparable to easy / creamy / harsh and so on.
One of many cause to purchase such a quick lens because the Sigma 18-50mm F2.8 DC DN Up to date is to have the ability to isolate the topic from the background.
Sigma have used an iris diaphragm with 7 rounded blades for a reasonably pleasing rendering of the out-of-focus highlights.
Under you will discover some examples, however you’re additionally inspired to take a look at our pattern photos.
Sharpness
With a view to present you ways sharp the Sigma 18-50mm F2.8 DC DN Up to date lens is, we’re offering 100% crops on the next pages.
