Sigma 24-105mm F4 DG HSM Art A-mount lens review by dfwatt

reviewer#35782 date: Mar-1-2017
sharpness: 5
color: 5
build: 5
distortion: 5
flare control: 5
overall: 5
tested on:
  • film camera:Film camera
  • APS-C: 6MP6 MP; 10MP10 MP; 12MP12 MP; 14MP14 MP; 16MP16 MP; 20MP20 MP; 24MP24 MP
  • full frame: 12MP12 MP; 24MP24 MP; 36MP36 MP; 42MP42 MP; 61MP61 MP
ownership:I own this lens
compared to:Zeiss 24-70 II
Minolta 28-135 (secret handshake)
Zeiss 85 1.4
price paid:$900
positive:1) Excellent central sharpness wide-open, and overall sharper than the Zeiss 2470 if both are shot wide open (admittedly the Zeiss is a full stop faster).
2) Decent sharpness in borders and corners, particularly if you stop down to f5.6 and above.
3) Decent control over chromatic aberration
4) Superbly flexible optic 4.4 times zoom ratio
5) Doesn't get notably softer as you zoom out to the long end – a little bit softer but way better than average compared to many other zooms.
6) An amazing value at $900 – nothing even comes close in terms of full frame walk around optics. It drop kicks even value brands like Tamron, where their 24-70 2.8 SP goes for $1300.
7) USB dock allows you to get MFA really nicely tuned in at multiple focal lengths.
8) Saves 100 g of weight over the Zeiss 2470.
negative:1) Even stopped down, corners don't ever approach its excellent central sharpness – a minor nitpick. And not unexpected.
2) Average bokeh – not bad for four times zoom.
3) Nothing else to speak of.
comment:The best walkaround full frame zoom for your Alpha mount, if price is considered. Tied with the much more expensive Zeiss in overall sharpness (better at some worse at other FL), but sharper than the CZ, if both are compared wide open (of course the CZ is a full stop faster as a tradeoff). Lighter, way cheaper, but giving up a stop, and perhaps a bit of bokeh, if both are short at the long end (70mm for the CZ, 105mm for the Sigma). Better control of CA than the CZ at the wide end, about equal at 40-70mm.

Although some will potentially complain about the lack of access to hybrid autofocus, this is a nonissue for me, as I shoot mostly in expand flexible spot. Excellent AF performance including tracking, where it actually tracks better on a moving vehicle than the Sony G2.

rating summary

lens image
  • total reviews: 7
  • sharpness: 5.00
  • color: 4.86
  • build: 5.00
  • distortion: 4.71
  • flare control: 5.00
  • overall: 4.91
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