Lens review

Sigma C 65 mm f/2 DG DN

27 February 2021
Maciej Latałło

11. Summary


  • solid casing made of metal,
  • sensational image quality in the frame centre,
  • very good image quality on the edge of the APS-C sensor,
  • good image quality on the edge of full frame,
  • negligible lateral chromatic aberration,
  • moderate longitudinal chromatic aberration,
  • slight astigmatism,
  • excellent coma correction,
  • sensible appearance of out-of-focus images,
  • low vignetting on the APS-C/DX sensor,
  • silent and efficient autofocus,
  • two kinds of caps added in the box.


  • significant level of vignetting on full frame,
  • with such an angle of view distortion could have been lower.
The Sigma C 65 mm f/2 DG DN is not a completely flawless lens. We expected that distortion and vignetting might be corrected not as efficiently as we would like them to be, but with such an angle of view, we were positively surprised by the performance against bright light and just a slight level of spherical aberration.

Still, is it possible to complain about a lens that not only breaks resolution records, defeating bigger and more expensive rivals, but also can generate very sharp images across the whole frame up from the maximum relative aperture?

Despite its excellent performance the sales numbers of the Sigma 2/65 might fall short of expectations because of this device's untypical parameters and its price. The parameters place this lens exactly in the middle, between popular 1.8/50 class instruments (or even 1.8/55) and 1.8/85 ones that are featured in the Sony line-up and can be bought for a sensible amount of money. If you happen to own two such lenses you won't be interested in the Sigma for sure. What's more, you might be not so interested in the Sigma even if you own just one of them. For many amateur photographers spending around $700 on a lens that kind of duplicates equipment you already have is going over the top.

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However, if Sigma was able to sell the sensational Sigma C 56 mm f/1.4 DC DN for a sum of about $430 perhaps also the price of the Sigma 2/65 might be reduced in the future. I am fully aware that the model, tested here, is designed for full frame, optically more complex, and with a superior bulid quality. I also don't say its price should necessarily reach the level of $430 to make it more sellable. I suppose if the price tag of this instrument started with a number 5 it would be already a good beginning.