![]() In fact, any vignetting that you see on any of the images in this article was added in the post-processing phase. I also didn’t notice any vignetting even when shooting at small apertures. In this case, I noticed no discernible difference in sharpness along the edge of the image whether I was shooting at f/1.8 or f/16, even when zooming in significantly on the image. ![]() When shooting wide open, some consumer lenses have a tendency towards vignetting and/or have a loss of sharpness towards the edge of the image that can be very frustrating as a photographer. I cropped to include only the upper left-hand corner of each image to check for edge-to-edge sharpness. Some third party lenses can have the tendency to feel plastic-y, but this lens is made of Thermally Composite Material, which both looks and feels sturdy and professional.Ĭlockwise from upper left: 18mm at f/1.8 18mm at f/16 35mm at f/16 35 mm at f/1.8. Sigma’s Art line has been getting a lot of buzz over the past couple of years for being high-quality lenses at an affordable price point, and this one certainly did not disappoint. As an added bonus, it offers a fast constant aperture (f/1.8) that’s practically unheard of in similar zoom lenses. ![]() Sigma 18-35mm f/1.8 Art Lens offers a focal range that makes it useful for a number of different genres of photography such as weddings, portraits, and family photography. Right out of the box, it was evident that this lens is something special. So when I had the chance to try out the Sigma 18-35mm f/1.8 DC HSM lens for APS-C cameras for about a month, I happily jumped on the opportunity to put it to good use! Personally, I have never had a problem with third party lenses, and they make up about half of my current camera bag. Some photographers love them, some photographers choose to only purchase lenses made by their camera manufacturer. Automatic recording of camera settings and slate data such as project, scene number, take and special notes.In the world of photography, there are several different schools of thought when it comes to third party lenses. FocusĪutomatically populated lens data from electronic EF, B4 and i/Technology compatible PL lenses. High Speed Frame Ratesįour position ND filter wheel with clear, 2-stop, 4-stop and 6-stop ND filters. Maximum sensor frame rate dependent on resolution and codec selected. Lens ControlĮlectronic control via EF mount pins or 12pin broadcast connector for compatible lenses Dynamic Range Interchangeable with optional PL, B4 and F lens mounts. Connectionsġ x high speed USB-C expansion port for external media. Automatic recording of camera settings and slate data such as project, scene number, take and special notes. Metadata SupportĪutomatically populated lens data from i/Technology with compatible PL lenses and electronic EF lenses when using optional EF lens mount. Scene average auto exposure in video mode. Iris wheel and touchscreen slider for manual iris adjustment on electronically controllable lenses, iris button for instant auto iris settings on compatible lenses so no pixel is clipped in film mode. Touch and hold on LCD determines focus region and triggers auto focus. Focusįocus button triggers auto focus when using compatible lenses with focus servo. High Speed Frame RatesĤK Super 16 up to 240 fps Built in ND Filtersįour position ND filter wheel with clear, 2-stop, 4-stop and 6-stop IR ND filters. Maximum sensor frame rate dependent on resolution selected. Lens Controlġ2pin broadcast connector for compatible lenses and electronic control via EF mount pins on optional EF lens mount. ![]() Interchangeable with optional EF and F lens mounts.
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