LensTip.com

Lens review

Sigma C 24 mm f/3.5 DG DN

19 May 2021
Maciej Latałło

7. Coma, astigmatism and bokeh

The Sigma C 24 mm f/3.5 DG DN corrects coma on the smaller sensor very well. In corners of full frame you can notice some deformations of diode images but it would be difficult to call them huge. What's more, coma decreases noticeably on stopping down the aperture by 1 EV.

In this category the whole group of 24 mm class lenses perform similarly well and differences between them are not especially pronounced.

Center, f/3.5 Corner APS-C, f/3.5 Corner FF, f/3.5
Sigma C 24 mm f/3.5 DG DN - Coma, astigmatism and bokeh Sigma C 24 mm f/3.5 DG DN - Coma, astigmatism and bokeh Sigma C 24 mm f/3.5 DG DN - Coma, astigmatism and bokeh
Center, f/5.0 Corner APS-C, f/5.0 Corner FF, f/5.0
Sigma C 24 mm f/3.5 DG DN - Coma, astigmatism and bokeh Sigma C 24 mm f/3.5 DG DN - Coma, astigmatism and bokeh Sigma C 24 mm f/3.5 DG DN - Coma, astigmatism and bokeh


Please Support Us

The coronavirus crisis has been adversely affecting many businesses and, sad but true, ours is not an exception. Despite that difficult situation we would like to preserve continuity and high quality of publications available on all our websites. Still, we are now aware it might be impossible without additional financial help. That's why we would like to ask all those who visit, read, and care about Optyczne.pl, LensTip.com i Allbinos.com for support - it's enough you send us a small sum of money via PayPal. If a lot people decide to support our websites we think we'll stand a chance and survive next months without any lasting harm. We count on your support and understanding, stay safe and be healthy.

- - - - - - - - - - - - - - - - - advertisement - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -


Astigmatism, understood as an average difference between vertical and horizontal MTF50 function values, amounted to just 2.6%. It's a very low value, not giving you any reasons to complain, especially that all Sigma rivals performed a bit weaker in this category.

Defocused circles of light look sensibly well but nothing more than that. The presence of as many as three aspherical lenses in the optical construction makes itself felt at this point so the circles feature onion ring bokeh. As a kind of consolation you might add that mechanical vignetting disappears already on stopping down the aperture by 1 EV.

Center, f/3.5 Corner APS-C, f/3.5 Corner FF, f/3.5
Sigma C 24 mm f/3.5 DG DN - Coma, astigmatism and bokeh Sigma C 24 mm f/3.5 DG DN - Coma, astigmatism and bokeh Sigma C 24 mm f/3.5 DG DN - Coma, astigmatism and bokeh
Center, f/5.0 Corner APS-C, f/5.0 Corner FF, f/5.0
Sigma C 24 mm f/3.5 DG DN - Coma, astigmatism and bokeh Sigma C 24 mm f/3.5 DG DN - Coma, astigmatism and bokeh Sigma C 24 mm f/3.5 DG DN - Coma, astigmatism and bokeh
Center, f/7.1 Corner APS-C, f/7.1 Corner FF, f/7.1
Sigma C 24 mm f/3.5 DG DN - Coma, astigmatism and bokeh Sigma C 24 mm f/3.5 DG DN - Coma, astigmatism and bokeh Sigma C 24 mm f/3.5 DG DN - Coma, astigmatism and bokeh