In the corners, the 55mm appears to have an advantage over both the 50mm and 56mm wide open. The 50mm performs best between f/4 and f/5.6. The ‘sweet spot’ for the 55mm and 56mm is anywhere between f/2.8 and f/5.6. f/4 f/5.6 f/8Īt f/11, diffraction starts to inhibit lens resolution and by f/16, they all appear quite soft. f/2.8Īt f/4 and beyond, it is very difficult to tell the difference between the three lenses, although I would say the 50mm is still marginally softer than both the 55mm and 56mm. At this point, the 50mm starts to improve but it doesn’t quite match either of its rivals. f/2Īt f/2.8, the Sigma continues to be sharper than the 55mm but only just. Stop them down to the first aperture value they share – f/2 – and the Sigma suddenly springs into the lead. The 55mm and 56mm look very similar but if I had to choose, I would say the 55mm was ever so slightly sharper. Reference imageĪt their fastest apertures, the 50mm is clearly the softest of the three. Optical quality – Through the lens Sharpnessįirst let’s take a look at how centre sharpness compares at a distance of approximately 7 meters. The other two are only available in black. The only lens to come in either black or silver is the 50mm. (My second-hand copy of the 50mm didn’t come with one unfortunately, which is why it isn’t pictured below.) ![]() The diameter is the same for the two Sony lenses (49mm) whereas the Sigma accepts 55mm filters.Ī plastic lens hood is provided with all three lenses. The 50mm doesn’t feature any weather-resistance whatsoever.Įach lens has a filter thread at the front to which you can attach ND filters. The 56mm is only protected around the mount thanks to the rubber sealing. The 55mm features a dust and moisture resistant design. The only non-metallic part of the 56mm is the rubber focus ring. The 50mm is made from high quality plastics but features an external metal finish, whereas the 55mm and 56mm are both predominantly metal – hence the additional weight. All three are a good match for Sony E-mount cameras such as the a6300 pictured below. ![]() The 55mm and 56mm are almost the same weight (281g vs 280g respectively) whereas the 50mm is the lightest of the three at just 202g. Looking at the three E-Mount lenses side-by-side, we can see that although the 55mm is a little taller than the other two, and the Sigma is a little chunkier around the middle where the focus ring is, they are all more or less the same size. To know more about our ethics, you can visit our full disclosure page. If you buy something after clicking the link, we will receive a small commission. Within the article, there are affiliate links. We were not asked to write anything about these products, nor were we provided with any sort of compensation. In this comparison, we’re going to be taking a look at how these three primes compare.Įthics statement: We bought the two Sony lenses for our personal use whereas the Sigma 56mm f/1.4 was loaned to us for three weeks. Within the Sony E-mount range, there are already quite a few lenses with an equivalent 70-85mm focal length, two of which are the E 50mm f/1.8 OSS (75mm equivalent) and the FE 55mm f/1.8 ZA (82.5mm equivalent). With an equivalent coverage of 84mm in 35mm terms and a very fast 1.4 maximum aperture, it has all the characteristics you’d expect from a portrait lens, making it a very desirable product for Sony users. ![]() ![]() The Sigma 56mm f/1.4 DC DN Contemporary is the latest prime to join Sony’s range of APS-C E-mount lenses.
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