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Sigma 90mm F2.8 DG DN Assessment



Introduction

The Sigma 90mm F2.8 DG DN is a quick, short-telephoto prime lens for Sony Alpha full-frame and APS-C E-mount mirrorless cameras, the place it gives a 135mm equal focal size. It is also out there for Leica / Panasonic / Sigma L-mount cameras.

This new lens is a part of the Sigma I collection of compact, high-performance, impeccably constructed primes for mirrorless digicam programs, which boast a premium all-metal weather-sealed development, a magnetic metallic lens cap and a metallic lens hood.

The Sigma 90mm F2.8 for Sony was launched in September 2021, becoming a member of the Sigma 24mm F3.5 DG DN, 35mm F2.8 DG DN, 65mm F2.8 DG DN and 45mm F2.8 DG DN lenses in addition to the brand new 24mm F2 DG DN that we have lately reviewed.

It options 11 parts in 10 teams, with one aspherical factor and 5 particular low dispersion parts to scale back chromatic aberrations and shade fringing.

There is a Tremendous Multi-Layer Coating to attenuate inner reflections in order that flare and ghosting don’t happen.

This lens boasts a dust- and splash-proof construction and has a minimal focusing distance of 50cm / 19.7in. with a most magnification of 0.2x.

It has a rounded 9-blade diaphragm which creates a horny blur to out-of-focus areas of the picture and an inner focusing mechanism which implies the lens barrel would not transfer.

There’s a stepping motor for quick, quiet and exact auto-focusing, whereas the focusing ring gives superb handbook focus management.

A conventional aperture ring runs from f/2.8 to f/22 in third-stop increments with an Auto setting additionally out there for camera-based aperture choice.

The Sigma 90mm F2.8 DG DN lens is on the market now priced at £549 / $639 within the UK and USA, respectively.

Ease of Use

Sigma 90mm F2.8 DG DN

Weighing in at 295g and measuring 64mm × 61.7mm, the all-metal bodied Sigma 24mm F2 DG DN is each extremely gentle and extremely small for a 90mm full-frame lens.

Its total dimension may be very well-suited to a digicam just like the Sony A7 III that we examined it with, as proven within the product pictures.

Even with the equipped hood connected, it’s nonetheless amazingly discrete for a 90mm lens.

Sigma 90mm F2.8 DG DN
Sigma 90mm F2.8 DG DN

Most 90mm optics are often specialist macro lenses, such because the Sony FE 90mm F2.8 Macro G OSS, which is over twice the load and size than this Sigma 90mm.

While you do not get the identical macro capabilities with the Sigma 90mm F2.8 DG DN, having such a protracted focal size in such a small package deal makes it fairly distinctive, no imply feat in what’s now a really mature digicam system with a number of avaulable lenses.

Sigma 90mm F2.8 DG DN
Sigma 90mm F2.8 DG DN

Construct high quality is just very good, far exceeding what you may count on from a mid-range, f/2.8 prime.

Sigma have actually gone to city on the brand new I collection, a lot in order that they’ve defined in nice element simply how a lot thought has gone into it.

It incorporates a brass bayonet mount that is supposedly extra sturdy than a standard metallic mount.

Sigma 90mm F2.8 DG DN
Sigma 90mm F2.8 DG DN

A rubber seal is integrated into the lens mount’s design to make it dust- and splash-resistant.

The Sigma 90mm F2.8 DG DN lens has a metallic lens mount and it accepts widespread 55mm filters through metallic threads on the entrance of the lens.

The lens would not characteristic built-in optical picture stabilisation, relying as a substitute on the digicam physique’s stabilisation system.

Sigma 90mm F2.8 DG DN
Sigma 90mm F2.8 DG DN

The Sigma 90mm F2.8 DG DN lens has a generously large, ridged motor-assisted focus ring that may be very properly damped. Handbook focusing is feasible by utilizing the main target mode change to toggle between AF and MF.

There are not any exhausting stops at both finish of the vary, making it a bit tougher to set focus at infinity. Polariser customers ought to be happy that the 55mm filter thread would not rotate on focus.

The Sigma 90mm F2.8 DG DN lens utilises a stepping motor which produces quiet, however not silent, easy focusing, making it pretty well-suited to capturing each stills and video, with the general lens size remaining fixed throughout focusing.

Sigma 90mm F2.8 DG DN
Sigma 90mm F2.8 DG DN

Relating to auto-focusing, it proved to be a fast performer on the Sony A7R III digicam that we examined it with.

We did not expertise very a lot “looking”, both in good or dangerous gentle, with the lens precisely focusing nearly all the time.

Sony’s close to flawless Eye AF works completely with this lens, shortly locking onto and monitoring the topic’s eye regardless of the wide-angle view, and it totally helps Sony’s DMF and AF+MF capturing modes.

Sigma 90mm F2.8 DG DN
Sigma 90mm F2.8 DG DN

The Sigma 90mm F2.8 DG DN lens options an aperture ring that has 1/3EV stops starting from f/2.8 to f/22 and an Auto setting for those who want to set the aperture through the digicam physique.

Sadly there is not any Click on change on the lens barrel that allows you to de-click it for silent operation throughout film recording.

The Sigma 90mm F2.8 DG DN lens is not equipped with a lens case, however it does include an excellent high quality, hybrid plastic and metallic, round lens hood (LH576-02) that continues the ribbed texture of the lens barrel, and likewise an revolutionary magnetic metallic lens cap (LCF62-01M), along with a standard plastic cap.

This devoted metallic cap clips to the entrance floor of the lens magnetically, and there is even an optionally available magnetic metallic lens cap holder (CH-11) that may be clipped to a bag or a belt.

Observe that the magnetic lens cap cannot be used with filters and is sort of awkward to make use of when the lens hood is fitted.

Focal Vary

The 90mm focal size gives an angle of view of 27.0 levels on a 35mm full-frame digicam.

Sigma 90mm F1.4 DG HSM

Chromatic Aberrations

Chromatic aberrations, sometimes seen as blue or purple fringes alongside contrasty edges, weren’t very obvious in our take a look at pictures, solely showing in very excessive distinction areas. The instance beneath present the worst-case situation.

Sigma 90mm F2.8 DG DN

Gentle Fall-off

With the lens set to its most aperture of f/2.8, there may be some gentle fall-off within the corners, requiring you to cease down by not less than 3 f-stops to utterly forestall it.

Sigma 90mm F2.8 DG DN

Distortion

There’s little or no distortion evident within the JPG information – the Sony Alpha A7 III routinely and efficiently applies corrections to them – however the Uncooked file suffers from a number of pincushion distortion that you’re going to have to right in post-processing.

Sigma 90mm F2.8 DG DN

JPEG

Sigma 90mm F2.8 DG DN

Uncooked

Sunstars

The Sigma 90mm F2.8 DG DN is able to producing fairly good sunstars when stopped-down to f/16 or f/22, as proven beneath.

The lens is a bit prone to flare when capturing straight into the solar, although, even with the equipped lens hood fitted.

Sigma 90mm F2.8 DG DN

Macro

The Sigma 90mm F2.8 DG DN is not claimed to be a macro lens, however it does supply a minimal focusing distance of 50cm / 19.7in. with a most magnification of 0.2x. The next examples show how shut you may get to your topic.

Sigma 90mm F2.8 DG DN
Sigma 90mm F2.8 DG DN
Sigma 90mm F2.8 DG DN
Sigma 90mm F2.8 DG DN
Sigma 90mm F2.8 DG DN
Sigma 90mm F2.8 DG DN
Sigma 90mm F2.8 DG DN

Bokeh

Bokeh is a phrase used for the out-of-focus areas of {a photograph}, and is often described in qualitative phrases, similar to easy / creamy / harsh and so on.

Within the 90mm F2.8 DG DN lens, Sigma have employed an iris diaphragm with 9 rounded blades, which has resulted in very interesting bokeh for a brief telephoto lens.

We do realise, nevertheless, that bokeh analysis is subjective, so we have included a number of examples beneath on your perusal.

Sigma 90mm F2.8 DG DN
Sigma 90mm F2.8 DG DN
Sigma 90mm F2.8 DG DN
Sigma 90mm F2.8 DG DN
Sigma 90mm F2.8 DG DN
Sigma 90mm F2.8 DG DN
Sigma 90mm F2.8 DG DN
Sigma 90mm F2.8 DG DN
Sigma 90mm F2.8 DG DN

Sharpness

With the intention to present you the way sharp this lens is, we’re offering 100% crops on the next web page.

We will be happy to hear your thoughts

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