Review: Sigma 19mm f/2.8 DN Art (Sony E-Mount)

Image Quality

Sharpness

Ohio Statehouse - Sony a6000 with Sigma 19mm f/2.8 DN Art @ f/8
Ohio Statehouse – Sony a6000 with Sigma 19mm f/2.8 DN Art @ f/8

I have owned the 19mm f/2.8 for Micro 4/3 for over a year, and while that lens is extremely sharp in the center, I noted some corner softness, even on the smaller Micro 4/3 sensor. It is, therefore, surprising that I have found that the new Art version, despite having the same optical design, performs even better on the Sony’s APS-C sensor. The 19mm f/2.8 has the field of view of a 28mm lens on a full-frame sensor, so we’re looking at a wide-angle lens on the APS-C format.

The center is extremely sharp right from f/2.8, with good edges wide open that improve to very good upon stopping down. While the lens still doesn’t reach exceptional levels of sharpness on the edges and corners, they are still very good and quite usable for even large prints. The lens can be used without worry for most any situation.

Bokeh

While the wide-angle focal length combined with a moderate f/2.8 aperture means that background blur capabilities are limited, the 19mm f/2.8 is capable of blurring the background at closer focus distances. The bokeh from the 19mm is relatively unremarkable. It’s a bit nervous without being overly distracting, but you won’t get creamy backgrounds from this lens. The image below shows what you can expect in real world usage. This is focused at about 0.5m and shot wide open to provide some pop to the nearest fish.

Fishy Arch - Sony a6000 with Sigma 19mm f/2.8 @ f/2.8
Fishy Arch – Sony a6000 with Sigma 19mm f/2.8 @ f/2.8

Color, Contrast and Chromatic Aberration

The Sigma 19mm produces images with excellent color and contrast. There is good even contrast throughout the aperture range and nothing to complain about with regards to color. The lens produces a very neutral color rendition with well saturated color.

Having extensively used all three of the Sigma DN primes, they do have a similar drawing style that is quite nice.  While the 19mm is slightly more muted than the 30mm and 60mm primes, it still shows plenty of that rich contrast and color that seemingly defines this line of lenses.

The lens does produce some lateral chromatic aberration at the edges of the frame, which can be visible if left uncorrected. Lateral CA can be cleaned up very well with most RAW processing tools, so it generally doesn’t pose much of a problem. In the right circumstances some minor longitudinal chromatic aberration can be seen, but it usually isn’t objectionable in most situations.

Distortion, Flare and Vignetting

The Sigma 19mm has moderate barrel distortion like many wide-angle lenses, and can be noticeable if shooting scenes with many straight lines. Thankfully the distortion is relatively simple and easy to correct.

The lens can flare with bright light in the frame or just out of frame if you aren’t using the hood, so take care in these situations. Often the flare will produce some notable green ghosting immediately around the bright light source, though overall image contrast stays high even in these situations.

Thankfully, the 19mm shows only minor vignetting at f/2.8 which is predominantly gone by f/4, so there’s nothing to worry about here.

Continue: Conclusion and Image Samples

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Comments

8 responses to “Review: Sigma 19mm f/2.8 DN Art (Sony E-Mount)”

  1. Hakan Vatansever Avatar
    Hakan Vatansever

    Thanks for the review Jordan. I wish there were some full size samples to evaluate sharpness of the lens.

    Otoh, i’m still expecting your conclusions about my XF23+X-A1 photos.

    many thanks.

  2. Harry Solomon Avatar
    Harry Solomon

    No phase-detect autofocus capability – what this mean?
    The above conclusion was not appear in the reviews of Sigma 19mm f/2.8 DN Art and Sigma 60mm f/2.8 DN Art.
    As I understand the both three lenses use the same technology.
    Please advise.

    1. Morgt Avatar
      Morgt

      it´s nonsense…. of course it works with PD AF.

      1. Jason Avatar
        Jason

        No it’s not. Assuming it works like the 30mm, you get 8 or 9 center detection points in the heart of the frame, not full PD AF across the image. It is a major drawback on the 30, though for the image quality and price not necessarily a deal breaker. And it’s obviously even less of a concern if you’re primarily shooting landscapes with the focal length of the lens reviewed here.

  3. […] of three very affordable, but moderate aperture prime lenses for mirrorless cameras. The Sigma 19mm f/2.8, 30mm f/2.8 and 60mm f/2.8 are still among the very best values in the mirrorless world, providing […]

  4. […] of three very affordable, but moderate aperture prime lenses for mirrorless cameras. The Sigma 19mm f/2.8, 30mm f/2.8 and 60mm f/2.8 are still among the very best values in the mirrorless world, providing […]

  5. […] was the high quality and very low-cost series of Art primes with f/2.8 apertures.  The 19mm f/2.8, 30mm f/2.8 and 60mm f/2.8 all had very good image quality at rock bottom prices, but had a few […]

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