3/6/2023 0 Comments Cdock review![]() At $60, it's not an expensive accessory in the camera world, and it's a good tool to have if you own a compatible Sigma lens.While connected to an Apple LED Cinema Display, I tested SSD write speeds over its Type-A port on both a MacBook and MacBook Pro, and hit the top performance on the drive of over 300 MBps writing and over 400 MBps reading. It's easy to use, though some care should be taken when adjusting focus calibration. ![]() The more advanced features are most useful with the 120-300mm telephoto zoom, and future long telephoto and macro lenses are sure to benefit from the focus limiter and autofocus speed settings. If you've got a lens that's not quite focusing correctly, it's an inexpensive way to calibrate it for use with your camera. ![]() Its functionality is limited based on the lens you're using. The Sigma USB Dock isn't an accessory that every photographer needs or will use. This function will only be enabled on lenses that have a toggle switch to enable or disable the focus limitation system, so setting this in the software can't prevent you from focusing across the entire range of the lens when in the field. If you know that you're going to shoot a sporting event and you know that you're only going to be shooting action from a distance you can set the limit from 50 feet to infinity and speed the autofocus system. Finally there's a Focus Limiter setting that lets you limit the focus range over any distance. (Opens in a new window) Read Our Sigma 120-300mm F2.8 DG OS HSM Reviewįrom the AF Speed menu you'll be able to prioritize speed over accuracy, accuracy over speed, or revert to the default setting, which is somewhere in the middle. The Standard mode is somewhere in the middle, and represents the lens's default behavior. Moderate View slows down the stabilization system, and is less jarring when you're taking your time to compose a scene. Dynamic View shows the effects of the stabilization system in the viewfinder, moving elements around as quickly as possible to capture fast action. There are three modes: Dynamic View, Standard, and Moderate View. There's an OS setting that lets you adjust the way the lens stabilization system works. The rest of the functions are currently only compatible with the 120-300mm at this time. It can adjust at different focal lengths and focus distances. Some higher-end bodies support in-camera focus adjustments, but they don't go as far as the software that works with the dock. If you've got a focus issue with your lens and body combination you can adjust the lens to correct it. Users who demand critical performance from lenses often encounter back-focus or front-focus, where a lens is focusing slightly in front of or behind the subject. In an ideal world, every camera from a specific manufacturer would be perfectly calibrated, but the world isn't ideal. Read our editorial mission (Opens in a new window) & see how we test (Opens in a new window).Įssentially, light is bounced from the mirror to a dedicated autofocus sensor. Since 1982, PCMag has tested and rated thousands of products to help you make better buying decisions. Firmware updates are pretty self-explanatory, but focus adjustments take some understanding of how a camera's autofocus system works. All of the lenses support firmware updates and focus adjustment. The software is compatible with OS X and Windows. Other currently compatible lenses include the 35mm F1.4DG HSM ($749.00 at Amazon) (Opens in a new window), 17-70mm F2.8-4 DC Macro OS HSM, 30mm F1.4 DC HSM, and 18-35mm F1.8 DC HSM ($684.95 at Amazon) (Opens in a new window). At this time that only includes five lenses and only one of them, the 120-300mm F2.8 DG OS HSM ($3,599.99 at Amazon) (Opens in a new window) is compatible with the full breadth of customization options. It's available for lenses that use Canon, Nikon, or Sigma mounts. It's compatible with recent glass that's part of the company's Global Vision Line you'll know that your lens is part of this generation by its Contemporary, Art, or Sports designation. The Sigma USB Dock ($59 direct) ($49.00 at Amazon) (Opens in a new window) is an inexpensive accessory that allows you to take full control over the performance of your Sigma lenses. How to Set Up Two-Factor Authentication.How to Record the Screen on Your Windows PC or Mac.How to Convert YouTube Videos to MP3 Files.How to Save Money on Your Cell Phone Bill.How to Free Up Space on Your iPhone or iPad.How to Block Robotexts and Spam Messages.
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