In this section you can view and add various PDF files for the lenses in our database. Instruction Manual SIGMA 17-70mmF2.8-4 DC MACRO OS HSM Sigma DC 17-70 mm F 2.8-4 Macro OS HSM Posted by: Radovan 497 : View PDF 1,86 Mb. Sigma 17-50 mm - User Guide EN/FR/ES/DE Sigma DC 17-50 mm f/ 2.8 EX unboxing and how it looks and works. Sony A7r3 review with the Sigma 105mm OS macro lens How good is it? - Duration: 13:24. Sigma 50mm F2.8 EX DG Macro is an Auto Focus (AF) Macro Prime lens with 35mm FF max sensor coverage. When mounted on a 35mm FF sensor camera, it will give you an FF equivalent focal range of 50mm. Sigma 50mm f/2.8 EX DG: Verdict This 50mm macro from Sigma is a very capable lens for the price and should make a good introduction to macro photography, especailly for those on a budget. The Sigma 105mm F2.8 EX DG OS HSM Macro lens is one of my favorites for field work and is an excellent all around macro lens. If you have any questions or comments be sure to share 'em in the comments section below. Robert O'Toole is a Sigma Pro and has been a professional photographer for more than 20 years. Come explore Sigma's lineup of Macro DSLR camera lenses, bringing out the smallest details from the world around you. Available for most major mounts including Sigma, Canon, Nikon and Sony. SIGMA GLOBAL VISION About SIGMA Cameras Lenses Cine Lenses Accessories Download Download Lenses Firmware. SIGMA Optimization Pro; Firmware; Brochures / Manuals; FAQ; Tutorial; Download Lenses Firmware List Accessories Sigma 50mm f/2.8 EX DG Macro Lens for Nikon SLR Cameras - Fixed by and doing a manual focus - this is what I prefer anyway. The light meter works, and f-Stops will show on your screen - then you use the dial on the camera body to select the f-Stop or shutter speed you want. Macro lenses are notoriously slow to autofocus, and this one is no different. Manual focus, which is the normal way to do this kind of work, is achieved with the ring mounted at the front of the barrel. The ring is marked with a distance scale in both metres and feet and is nicely torqued when in manual focus mode. I have the Sigma 50 macro and it is a very sharp lens. It is likely to be similar in resolution to the Canon, with less vignetting. The Canon does have some advantages, like faster AF and greater working distance. The Sigma 50-100mm f/1.8 DC HSM Art Lens will win no awards for its zoom focal length range, but as of review time, no zoom lens has a wider aperture. And, at the 100mm end of the range, there is no equal even among the prime lens offerings. The f/1.8 max aperture, available over the entire zoom A true one-lens solution for photographing nearly any subject type, the Sigma SA-mou A true one-lens solution for photographing nearly any subject type, the Sigma SA-mou