Sony 16-50 2.8 vs Sigma 17-70 "C"

Started 5 months ago | Discussions thread
K E Hoffman
Senior MemberPosts: 2,758Gear list
Like?
Small correction to lists - Sony 16-50 2.8 vs Sigma 17-70 "C"
In reply to K E Hoffman, 5 months ago

K

I have the new Sigma 17-70 "C" Its a great lens, especially for the cost.

I have also been researching the Sony 16-50 2.8 to see if it is an upgrade worth the money

Sigma:

Pros

  • Flat sharpness center to edge at all by wide angle
  • Sharpest at F5.6
  • 70mm extra reach and long-end
  • Lower CA than Sony
  • Pretty Silent Focus (in quite locations automatic gain on they A77 mic pics up some clicking as it starts, stops or changes direction)
  • Price under $500
  • Looks really nice with monochrome design and is compact

Cons

  • F4 at 70 mm where it is a good portrait lens length BUT may not have narrow enough DOF for some types of portraits
  • Sharpest at F5.6
  • Drops out of F2.8 soon and is one stop slower by 70mm
  • Lens switch has to be changed for MF, no DMF no full time manual override adjustments like Screwmount with DMF or SSM
  • No weather sealing
  • Sony Lens JPG compensation does not support lens

Sony

Pros

  • Very sharp at F4 at all FL and pretty flat response (sharper than Sigma)
  • extra reach and wide end
  • F 2.8 available at all FL one stop more light at 50mm

Sharpest at F5.6

  • Less distortion at long end 50mm than sigma
  • Super Silent Focusing
  • Manual Focus Ring usable at all times for fine tuning
  • Weather Sealed like A77 body
  • Sony internal lens jpg compensation function supports lens

Cons

  • Can be soft and edge soft at F2.8 at all FL (but Sig doesn't even have option)
  • Sony bodies don't simulate DMF feature of turning on focus peaking like screw mount, should be simulated in AFS (Push since neither lens support 100% of DMF function)
  • More CA than Sony
  • Larger than Sigma

I used SLR GEAR tests to evaluate the lenses.. and my personal use of Sigma to confirm it is a nice lens.

For me optically they are close and I am not sure Sony is worth more. SSM and weather sealing have me thinking about it. If Sony simulated full DMF by turning on focus peaking after an AFS event.. so it behaved like a screw mount lens on DMF ... I would buy it for sure. Right now.. I am sticking with the Sigma because I own it and it would cost me about $250 to upgrade.

-- hide signature --

K.E.H. >> Shooting between raindrops in WA<<
Don't Panic!.. these are just opinions... go take some pictures..

-- hide signature --

K.E.H. >> Shooting between raindrops in WA<<
Don't Panic!.. these are just opinions... go take some pictures..

 K E Hoffman's gear list:K E Hoffman's gear list
Canon EOS 450D Sony SLT-A77 Nikon 1 J1 Sony a77 II Sony 70-300mm F4.5-5.6 G SSM +7 more
Reply   Reply with quote   Complain
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark post MMy threads
Color scheme? Blue / Yellow