Sigma 70mm F/2.8 EX DG Macro Lens for Sony Digital SLR Cameras (OLD MODEL)

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Sigma 70mm F/2.8 EX DG Macro Lens for Sony Digital SLR Cameras (OLD MODEL)

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Special Low Dispersion (SLD) lens and two high refractive index SLD lenses provide excellent correction for all types of aberrations Super multi-layer lens coating reduces flare and ghosting Floating focus system provides extremely high optical performance from infinity to 1:1 Macro Equivalent field of view to 105mm macro lens when used on a digital SLR camera with an APS-C size image sensor

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Sigma 70mm F/2.8 EX DG Macro Lens for Sony Digital SLR Cameras (OLD MODEL)

Style: Sony Digital SLR Cameras This medium telephoto macro lens is ideal for both digital SLR cameras and 35mm film SLR cameras. The 70mm focal length gives an equivalent field of view as our popular 105mm macro lens when used on digital SLR cameras with an APS-C size image sensor. The design of this lens makes it suitable for taking pictures in all situations from infinity to 1:1 macroc both with natural light conditions or flash. A Special Low Dispersion (SLD) lens and two high refractive index SLD lenses provide excellent correction for all types of aberrations and produce an exceptional level of optical performance. Sigma..s super multi-layer lens coating reduces flare and ghostingc and helps create a natural color balance. The floating focus system provides extremely high optical performance from infinity to 1:1 Macro. A Focus Limiter Switch in incorporated on the lensc improving the speed and accuracy of autofocus by limiting the focus range. A screw-in lens hood is included for convenient use of circular polarizing filters.

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Let me first echo what just about every other personal and professional reviewer has said about this lens. This is probably the sharpest lens in my bag or that Ive used. Yes it is sharpc I mean very sharp. This Sigma 70mm macro out resolves my 12mp Nikon d90 easily. My computer screen and d90c(nice screen)c usually pix-elate and fall apart long before the detail that this lens resolves. Any shortcoming in image quality is mostly attributed to user error. I have used and sold many macro lenses. Some highly regardedc some not so much. (Please see my Nikon 85mm 3.5 VR DX reviewc (an excellent lens) for a list of macros Ive used) br brThis sigma 70mm howeverc pics up that extra bit of detail that few lenses Ive used if any can pick up. No doubtc some of the Ziess or higher end glass is probably better but in this price category maybe not. This lens is very sharp at 2.8 and by that I mean it is consistently usable! Ive tried a few lenses that have reputations for being sharp wide open but really it turned out they were not. The Sigma 70 macro is particularly good on smaller format cameras due to the almost lack of veiling/fall-off due to use of lenses sweet spot. This lens is usable at f/2.8 for nice sharpness and smooth transitions (Good for portrait and close-ups). I stop to f/4-f/5.6c to clean up any aberration in high contrast situations (mostly in corners) and to sharpen up corners a bit and increase depth of field. Also stopping down increases contrast and brightness a touch but that is about it. br brSo why four stars Because I could not give 4.5 stars and while this lens is very sharp wide openc it doesnt stop down as far as Nikon macro lensesc which is important for depth of field in macro photography. The sharpness of this lens past f/5.6 falls off a little and at f/11- f/16 less gradual. I know this is physics and diffraction but I feel in close ranges perhaps other macro lenses surpass this one stopped down. This may or may not be true or it may be a result of such great sharpness wide-open. Also Ive heard on DX cameras that this lens slightly over exposes and on my d90 I think I can confirm this. In many situation I actually like this because wide open my images are sharpc smooth and bright which makes it look very crispc especially at smaller prints! Howeverc because of a slight tendency to over expose I just keep my eye on the meter in bright lighting. Hey wait minutec I always have to keep an eye on my camera meter anyway as it always seems to need a slight -0.3 compensation (d60c d200c d90) anyway. br brI also gave four stars because while I do think that the build quality is nice and solid and has a very good quality feelc the auto focus is a bit noisy and mine rattles a bit near the lens element when fully extended using AF. I am not sure if this is normalc it sounds as if there is a cheap UV filter attached and is shaking due to the AF motor. I Dont knowc but the focus is accuratec the view-finder never shakes and it only rattles a bit is when fully extended out to near 1:1. I gloved up and checked the front element and retention ring and all was tight with no wobble or looseness so maybe this is normal. br brAnywayc despite a few handling quirksc this lens feels very good in use. I sometimes like Sigma EX lenses and the way they feel and sometimes I dont. This 70mm macro I do. It has a nice smooth feelc is solid and has a nice weight to it and also a very handy mounting ring (like Tokina 100mm macro). This Sigma focuses accurately on my d90 and also has a nice smooth manual focus feel for an AF lens. Which by the wayc is only one button (Nikon) or lever to switch to manual focus. I know this is not as good as AF-Sc but at least its not a lever on the camera body and a goofy button on the lens too! br brOverall the Sigma 70mm 2c8 macro is a fantastic macro lensc the working distance is a bit close (approx. 3-4 inches from front of lens) and wont allow built-in flash coverage at or near 1:1. Despite this the lens is still definitely worth a look. I think it is a great outdoorc hiking and travel lens that is a lot of fun for close-ups and macros as well as portraits due to its 105mm focal length on APS-C type crop cameras. This Sigma is also good for distant objects as well. The detail it resolves at all distances or magnifications and apertures really is impressive! br brI try to review from a balanced perspective based on my actual user experience in the field. I try to be as accurate as possible because like youc I value all reviews and the bits of different information I can gather here and there to help me find what I am looking for! brHopefully Ive been helpful to you!!

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