![]() NOTE: This lens is for Sigma SA-mount bodies. The lens materials used in this lens are lead and arsenic free ecological glass. Since the front of the lens does not rotate, it allows the use of a flower shaped "Perfect Hood" and facilities the use of polarizing filters. It is easy to hold the lens, since the focusing ring does not rotate during auto focusing, and yet provides a wide focus ring for easy to use manual focus. The lens also incorporates Dual Focus mechanism. The use of two (2) SLD (The Special Low Dispersion) glass elements results in excellent correction of chromatic aberration and provides a high level of optical performance and 24-70rnm F2.8 EX ASPHERICAL DG DF has high contrast and resolution. Its design employs three (3) aspherical lens elements to minimize spherical aberration, astigmatism and sagittal comma flare. This lens covers focal lengths from 24mm ultra wide angle to 70mm medium telephoto and provides a large f2.8 aperture at all focal lengths and is for Sigma SA-mount bodies. Check the lens photo quality against your camera.The Sigma 24-70mm f2.8 EX Aspherical DG DF. I have gotten used to taking “normal” pictures on an 18mm focal length hence using this lens was quite uncomfortable for me.Ģ. The one drawback is a lack of wide-angle features because the minimal focal length is 24mm. Sigma 24-70mm is also good for taking other pictures and nice for macro. The f/2.8 aperture is completely tailored for it. The parameters, that have been used to take this photo show the rough light level balance between a good star view and an overexposed sky section covered by artificial lighting.Īs an outcome, I can recommend this lens to everyone, who wants to use it for night photography and make a close-up view of constellations and star clusters or remote objects. 33 shows, that light pollution may affect strongly the astrophoto quality. Compatible with any standard 0.8 Module follow focus. 33 The Orion constellation – close-up view with an accidental light bow, 70mm, f2.8, 1/2s, ISO 12800. Focus gear designed for the Sigma 24-70mm f/2.8 EX DG HSM lens. I was fighting with manual focus and with fungus also. I would like to say you, that the photos made by this Sigma 24-70mm F2.8 EX DG Macro are not good. Having 2 weeks to give this item back I took advantage of this occasion and made some tests. Besides the broken autofocus I spotted a few fungi on the bottom glass (Pic. It was a Sigma 24-70mm f2.8 EX DG Macro (Pic.1,2) rather than Sigma 17-70mm. Once I opened it I noticed, that this is not the lens, that I would like. It mounts smoothly onto the camera and communicates. I ordered another sigma 17-70mm f2.8 – 4.5 Macro on the same evening.Īfter a few days, the delivery has come to me. The Sigma 24-70mm F/2.8 DG EX HSM Nikon Fit Lens is in great condition fully working with no faults. It put me in a bad mood however I didn’t want to give up. I decided to take it back to the CEX shop again. Unfortunately, the lens, that I received was not fully operational, because the autofocus was completely broken. I have ordered through the website the used Sigma 17-70mm F2.8 – 4.5 Macro lenses. Coming across many lenses and different producers I found one, tailor-made for me at first glance. When I gave the Nikkor 18-105mm lens back to the CEX shop I decided to buy something different.
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