by Leave a Comment

Welcome to my rolling review of the Sigma 70mm F2.8 DG Macro Art lens for Sony full-frame E-mount. I initially rented this lens from HireaCamera here in the UK but have since purchased my own copy so that we can spend a little more time together.

Review Status: Rolling
Review Started: 24th October 2018
Last Update: 25th October 2018

**Please Note: Unless otherwise mentioned no post processing has been applied to the images in this review. Cropped images are noted, but full resolution SOOC JPEG images are available to download. RAW files are also available but password protected to help keep my hosting costs sensible. However, I do provide the username/password to all members of my monthly GAS email. All images are copyright protected and may be used for personal use only.

Lens Overview

The Sigma 70mm F2.8 DG Macro lens for Sony E-mount (full-frame) is the first macro lens from Sigma that has been adapted to Sony E-mount. However, the word adapted here is very important since the E-mount version of this lens has been adapted from their Canon and Sigma versions that were originally designed for SLR cameras and not mirrorless. The additional adapter that is built onto the back of the lens body for the E-mount does add extra weight and length to the lens over its SLR equivalents.

Sigma 70mm F2.8 DG Macro Art Sony E-mount Review

Key Specs

  • Mount: Sony E-mount (Sigma + Canon also available)
  • Format: Full-Frame
  • Facal length: 70mm
  • Stabilization: No
  • Weather sealing: Yes
  • Construction: 13 elements in 10 groups
  • Aperture blades: 9 rounded
  • Maximum aperture: f/2.8
  • Minimum aperture: f/22
  • Minimum focusing distance: 25.8cm
  • Maximum magnification ratio: 1:1
  • Filter diameter: 49mm
  • Weight: 622g (with lens hood)
  • Length: 130mm (min) 181mm (max)
  • Diameter: 70.8mm

You can find the full specifications on Sigma’s website.

Sample Images

The sample images included in this review have been mainly shot on my Sony a7R III and a7 III, with a couple shot on my a6500. Unless otherwise mentioned, all were shot handheld and with natural light.

wasp sigma 70mm macro

a7 III + Sigma 70mm F2.8 Macro @ 1/800 | f/4 | ISO 320 | Cropped | ** Full Resolution SOOC Download: JPEG | RAW

common blue butterfly sigma 70mm macro

a7R III + Sigma 70mm F2.8 Macro @ 1/250 | f/8 | ISO 400 | Cropped | ** Full Resolution SOOC Download: JPEG

damselfly sigma 70mm macro

a7 III + Sigma 70mm F2.8 Macro @ 1/640 | f/2.8 | ISO 250 | Cropped | ** Full Resolution SOOC Download: JPEG | RAW

brown argus sigma 70mm macro

a7R III + Sigma 70mm F2.8 Macro @ 1/200 | f/16 | ISO 1600 | ** Full Resolution SOOC Download: JPEG

damselfly sigma 70mm macro

a7R III + Sigma 70mm F2.8 Macro @ 1/200 | f/8 | ISO 400 | Cropped | ** Full Resolution SOOC Download: JPEG

small copper sigma 70mm macro

a7 III + Sigma 70mm F2.8 Macro @ 1/800 | f/2.8 | ISO 100 | Cropped | ** Full Resolution SOOC Download: JPEG | RAW

common blue sigma 70mm macro

a7 III + Sigma 70mm F2.8 Macro @ 1/200 | f/8 | ISO 640 | ** Full Resolution SOOC Download: JPEG | RAW

common blue sigma 70mm macro

a6500 + Sigma 70mm F2.8 Macro @ 1/250 | f/8 | ISO 160 | Cropped | ** Full Resolution SOOC Download: JPEG | RAW

damselfly sigma 70mm macro

a7 III + Sigma 70mm F2.8 Macro @ 1/200 | f/5.6 | ISO 400 | Cropped | ** Full Resolution SOOC Download: JPEG | RAW

wet leaves sigma 70mm macro

a7 III + Sigma 70mm F2.8 Macro @ 1/500 | f/4 | ISO 3200 | Full-frame | ** Full Resolution SOOC Download: JPEG | RAW

gatekeeper sigma 70mm macro

a7 III + Sigma 70mm F2.8 Macro @ 1/800 | f/2.8 | ISO 250 | Full-frame | ** Full Resolution SOOC Download: JPEG | RAW

bumblebee sigma 70mm macro

a7 III + Sigma 70mm F2.8 Macro @ 1/400 | f/5.6 | ISO 1600 | Cropped | ** Full Resolution SOOC Download: JPEG | RAW

common blue sigma 70mm macro

a7 III + Sigma 70mm F2.8 Macro @ 1/500 | f/9 | ISO 640 | Cropped | ** Full Resolution SOOC Download: JPEG | RAW

common darter sigma 70mm macro

a7R III + Sigma 70mm F2.8 Macro @ 1/1000 | f/5.6 | ISO 500 | Cropped | ** Full Resolution SOOC Download: JPEG | RAW

common blue sigma 70mm macro

a7 III + Sigma 70mm F2.8 Macro @ 1/200 | f/9 | ISO 200 | Cropped | ** Full Resolution SOOC Download: JPEG | RAW

damselfly sigma 70mm macro

a7R III + Sigma 70mm F2.8 Macro @ 1/200 | f/11 | ISO 1000 | Cropped | ** Full Resolution SOOC Download: JPEG

damselfly sigma 70mm macro

a7 III + Sigma 70mm F2.8 Macro @ 1/1000 | f/2.8 | ISO 800 | Cropped | ** Full Resolution SOOC Download: JPEG

small copper sigma 70mm macro

a7 III + Sigma 70mm F2.8 Macro @ 1/400 | f/5.6 | ISO 800 | Cropped | ** Full Resolution SOOC Download: JPEG | RAW

 

Handling / Build Quality

Sigma has a reputation for creating beautiful lenses, particularly in their Art Series and this lens is no exception. The Sigma 70mm f/2.8 DG Macro Art features a matte black and aluminum design, and from the moment you take it out of the box you know that you are holding an extremely well built piece of glass.

Sigma 70mm F2.8 DG Macro Art  Sony E-mount Body

The lens weighs in at 622g with the included lens hood attached, making it a few grams lighter than the Sony FE 90mm F2.8 macro lens that weighs 647g with the lens hood. As for the length, the Sigma measures 130mm without the lens barrel extended, this compares with 140mm for the Sony 90mm macro. However, because the lens barrel of the Sigma extends when you focus, this takes it to a maximum length of 181mm.

Sigma 70mm F2.8 DG Macro Art  Sony E-mount Focus Barrel Extension

Around 40mm of the total length is used to accommodate the E-mount spacer/adapter that can be seen in the following shot.

Sigma 70mm F2.8 DG Macro Art Sony E-mount Adapter

Although the lens barrel extends when focusing I never found it to affect handling in anyway, and with the lens hood attached the lens is always protected even when fully extended.

Sigma does not claim that any of their Art Series of lenses are weather resistant, but it does feature a rubber gasket around the lens mount which will hopefully prevent some dust and moisture from entering both lens and camera bodies.

The lens features a useful AF/MF switch, as well as a focus limiter switch with three settings – Full, 0.5m-infinity and 0.258-0.5m – allowing you to limit the focus range for faster focusing depending on the distance to your subject.

It really is hard to find fault with the build quality of this lens. That said, I do have one niggle with the 70mm focal length when combined with a minimum focusing distance of 25.8cm, which can at times make handling it frustrating for macro work. This is because to get true 1:1 magnification you will need to be extremely close to your subject, and when you get this close you will end up blocking the light on your subject and sometimes casting a shadow on it too. Also, if you are photographing small creatures, there’s a good chance that they will be long gone before you have nailed your shot.

 

Sharpness

Coming soon…

 

Bokeh

Bokeh is always very subjective. However, to my eyes this lens has really smooth bokeh, but let’s take a look at a few examples to see if you agree.

Background, what background? At f/2.8 the green foliage in this shot which was around 1-2 meters behind the dragonfly has been nicely smoothed out helping to draw your full attention to the subject.
dragonfly sigma 70mm macro

a7R III + Sigma 70mm F2.8 Macro @ 1/1000 | f/5.6 | ISO 800 | Cropped | ** Full Resolution SOOC Download: JPEG | RAW

The out-of-focus highlights in this shot are brighter which makes for a more demanding scenario. You can seem some minor outlining, but the inner bokeh circles are mostly clean and free from onion rings. There is some cat’s-eye bokeh but I personally don’t find this distracting even at f/2.8.

Sigma 70mm F2.8 DG Macro Art  Sony E-mount Bokeh Example

a7 III + Sigma 70mm F2.8 Macro @ 1/1000 | f/2.8 | ISO 500 | Full-frame | ** Full Resolution SOOC Download: JPEG | RAW

At f/5.6 the cat’s-eye bokeh is now gone, outlining is now more visible but the bokeh balls still remain nice and clean.
Sigma 70mm F2.8 DG Macro Art  Sony E-mount Bokeh Example

a7R III + Sigma 70mm F2.8 Macro @ 1/200 | f/5.6 | ISO 500 | Full-frame | ** Full Resolution SOOC Download: JPEG | RAW

In this shot the foliage was around 10 meters behind Muddy. It’s not as smooth and creamy as the previous shot with a closer background, and there are some challenging highlights that expose the cat’s-eye bokeh balls again at this wide-open aperture of f/2.8.
muddy sigma 70mm macro

a7R III + Sigma 70mm F2.8 Macro @ 1/200 | f/2.8 | ISO 500 | Full-frame | ** Full Resolution SOOC Download: JPEG | RAW

 

Focusing

The Sigma 70mm F2.8 DG Macro Art lens features a fly-by-wire focusing system that is routed through the focus motor, there is no physical coupling to the lens elements or hard stops, and the lens needs to be mounted to the camera and powered up for it to work.

The autofocus is certainly not the fastest that I have used or the quietest, and it will often seek more than usual in low light conditions. It also needs a full 3 seconds to switch focus from minimum to maximum distance. Still, for macro work you can set the limiter to the 0.258-0.5m setting which helps to speed things up a little.

Personally I prefer to manually focus anyway for macro work, as trying to nail the focus on the tiny eye of a butterfly using AF is virtually impossible.

The large focusing ring is extremely smooth and gives you a lot of precision when manually focusing, however this precision comes at a price, as the focus ring requires around 10 twists of the wrist to go from minimum to maximum distance. This isn’t ideal if you are shooting anything living!

I found the fastest method for manual focusing was to pre-focus on something other than my subject, then simply use focus peaking and move the camera back and forth until my subject or a specific feature like the eyes come into focus.

 

Color Rendition

Coming soon…

 

Flare and Ghosting

Coming soon…

 

Vignetting

If in-camera lens corrections are turned off or you are shooting in raw, then you will notice some darkening in the corners when shooting wide-open at f2.8. Stop down to f/5.6 and the vignetting is more or less gone.
sigma 70mm f2.8 dg macro art sony e-mount vignetting

If you are using in-camera corrections then you won’t see any vignetting in your jpeg images and raw files can easily be corrected with the lens profile in Adobe Lightroom and Camera RAW (v7.5/10.5).

 

Chromatic Aberrations

Coming soon…

 

Distortion

Coming soon…

 

Sunstars

Coming soon…

 

Alternatives

In case you are curious about alternative macro lenses to the Sigma 70mm F2.8 DG Macro Art lens, then these are your native E-mount options.

Sony FE 90mm F2.8 G OSS Macro Lens

Sony FE 50 mm F2.8 Macro

Sony E 30 mm F3.5 Macro

Voigtlander 110mm F2.5 Macro Apo-Lanthar

Voigtlander 65mm F2 Macro APO-Lanthar

The next update to this review will include further details on the alternative choices.

 

Summary

Coming soon…

 

* Sigma 70mm f/2.8 DG Macro Art (Buy or Check Prices)

US: Amazon, Adorama, Focus Camera
UK: Amazon, Wex Photo, Park Cameras

Or give your local camera store a call. You could also rent the lens from LensRentals.com in the US or HireACamera.com in the UK. This will give you the opportunity to try the lens for yourself before committing to purchasing it.

 

More Sample Images

My Sigma 70mm f/2.8 DG Macro Art Sample Image Gallery will include further sample images from this lens. However, please note that there are no additional images to those included in this review right now, but I will be adding new images to the gallery over the coming weeks.

 

Before You Go

Do you already own this lens? If you do, I’d love to hear your thoughts in the comments below. And if you are on Facebook, then please do post your shots or ask any macro related questions you may have in our friendly Sony Alpha Macro Shooters Group.

 

Please help to support my work on this site and keep it free from pesky adverts.

You can do this easily by purchasing your gear through the affiliate links (denoted with *) on this page. If you buy something after clicking a link I may receive a small commission, but don’t worry as the price still remains the same for you. If you do choose to buy through my links, thank you very much for your kind support.