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The Sigma 50-150mm f/2.8 II EX DC HSM Lens is a very attractive combination of focal length range, wide aperture and size/weight. Flare is very well controlled at 50mm and very strong at 150mm. The transition is linear over the focal length range. Distortion consists of mild barrel distortion in the center of the frame (not as strong at corners) at 50mm transitioning to near-none at 65mm. By 80mm, pincushion distortion becomes present and by 150mm, pincushion distortion is relatively strong. CA (Chromatic Aberration) is basically absent at 50 and 70mm, but starts to show in the corners by 100mm and becomes strong in the corners at 150mm. Vignetting is noticeable in the corners at f/2.8 – especially at 150mm. Most corner shading is cleared up by f/4, but 150mm likes f/5.6 for evenly-lit corners. Unfortunately, focus calibration issues appear to be prevalent in this lens. Your experience may be different, but … go forward with this lens purchase armed with the knowledge that repairs/returns are quite likely going to be necessary. These cost time – a finite resource that has value. The Sigma 50-150mm f/2.8 II EX DC HSM Lens delivers average image quality overall if it is focused properly. And that is the big if in my experience. READ FULL REVIEW
Other Sigma 50-150mm f/2.8 II EX DC HSM APO Reviews
With the big caveat that you want to ensure you have a good-quality sample, I’m impressed with the results presented by the Sigma 50-150mm Æ’/2.8 II. Its optical quality, marred only by de-centered lens element(s) in this copy, is very good. Build quality and overall construction is also admirable. I don’t know if there’s any pressing need to upgrade from the previous version of the lens, as version II just seems to open the field to Pentax and Sony SLR users. If you’re looking for a less expensive alternative to the major manufacturers’ 70-200mm offerings, this lens definitely bears consideration. READ FULL REVIEW