If you just want to share an image you've taken, you're welcome to post in /r/photographs, our sister photo sharing sub. Topic/question rather than the focus of the post. The image should be used to support an overall broad and nonspecific Posting images is only allowed as self-post using the photo as an example for the discussion, to either begin a conversation aboutĪspects of the example or to ask a photography-related question. Official FAQ and Wiki Please be sure to read the FAQ before posting. Photography as an art and post things that would be of interest to other photographers. This is not a good place to simply share cool photos/videos or promote your own work and projects, but rather a place to discuss Vignetting isn’t quite as severe in the middle to far end of the zoom, but can still be traced in images captured at f/2.8 so it’s recommended to enable lens profile corrections if you have access to them./r/photography is a place to politely discuss the tools, technique and culture of photography. This reduces to 1EV at f/4, with shading becoming less noticeable in real-world images by the time you reach f/5.6. Use the lens at the widest point in the zoom range at f/2.8 and you’ll notice that the corners of images appear darker than the centre by approximately 1.4EV. Sharpness drops off beyond f/11 as diffraction takes effect. Corner sharpness never reaches the same level as centre sharpness and our results tell us that it delivers sharper results into the corners at wider focal lengths than it does at the far end of the zoom. Centre sharpness at all focal lengths peaks between f/4-f/5.6, with the best edge-to-edge sharpness being located between f/5.6-f/8. Users of the lens will find that centre and corner sharpness improves considerably by stopping it down from its maximum aperture. Sigma 24-70mm f/2.8 DG OS HSM Art review: resolution, shading and curvilinear distortion Resolutionįor our Image Engineering Tests, the Sigma 24-70mm f2/8 DG OS HSM Art was paired up with the Canon EOS 5DS R. It’s easily fixed by applying a lens profile and this distortion is common with most standard zoom lenses covering a wide to short telephoto focal length. This level of distortion isn’t a major concern however. Mild pincushion distortion also appears as you encroach 70mm. Leave the image untouched and you’ll be aware of barrel distortion at 24mm, which diminishes as you zoom in towards 35mm. It’s a similar story correcting distortion. To maximise its appeal with a wide range of users it has an optical design that we’re told is optimised for DSLRs and mirrorless cameras boasting a resolution of up to 50 million pixels.Ĭanon EOS R with EF-EOS R adapter, Sigma 24-70mm f/2.8 DG OS HSM Art, 1/200sec at f/2.8, ISO 640 The Sigma 24-70mm f/2.8 DG OS HSM Art is designed as a go-to lens for many different photographic applications. The Sigma 24-70mm f/2.8 DG OS HSM Art for DSLRs is a lens we’ve been intending to review since its arrival earlier this year, but how good is it and should those after one of the finest performing standard zoom lenses consider it? Sigma 24-70mm f/2.8 DG OS HSM Art review: features Canon mirrorless users, though, will need to use the Sigma MC-11 mount adapter. There is a mirrorless version the Sigma 24-70mm f2.8 AF DG DN Art is available in both Sony FE and L-mount versions for $1099 / £1049. It replaces the ten-year old Sigma 24-70mm f/2.8 EX DG HSM and at around $1299 / £1149 is a more affordable alternative to the Canon EF 24-70mm f/2.8L II USM ($1699 / £2109) and Nikon AF-S 24-70mm f/2.8E ED VR ($2097 / £2099). The Sigma 24-70mm f/2.8 DG OS HSM Art is available in Nikon F and Canon EF DSLR mounts. The Sigma 24-70mm f/2.8 DG OS HSM Art flanked by the Canon EF 24-70mm f/2.8L II USM (left) and the Tamron 24-70mm f/2.8 Di VC USD G2 (right)
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