What is vignetting and why does it sometimes occur with telephoto lenses, especially at wider apertures?

If the supposed compression of a telephoto lens pulls the background closer as many believe, then these images should not line up if you crop or zoom and ... Apr 22, 2011 ... So when do you want to use it: · Zoom lens is the general term used for any lens that varies its focal length. · Telephoto lenses are lenses ... A powerful super telephoto zoom lens with a 200-800mm focal length, ideal for sports, wildlife and action photography. Jul 5, 2017 ... The Canon EF 100-400mm L IS USM "II" is an excellent lens with very high image quality, durable build, additional sealing for dust/weather resistance. Browse telephoto lenses by mm - including the popular 200mm, 300mm and 400mm. Bestselling telephoto lenses include the EF 600mm f/4L IS III USM Lens, EF 100- ... May 9, 2024 ... In order to make the most of a polar bear photo adventure, you really need something between a 400mm and 600mm lens at full frame equivalent. A super telephoto zoom lens with 5-axis Sync IS for powerful handheld photography. 1.35mm equivalent, 2.35mm equivalent when used with the MC-20 Teleconverter. Aug 18, 2023 ... Since the 100-400 is on the X-T5 compatibility list (while 16/1.4 isnt), my concern is that it is as sharp as it gets at those mms, and any ... Jul 29, 2019 ... The 200-600 has a “Direct Drive Super Sonic Motor” which helps to provide quick, quiet and precise autofocus performance. TELE CONVERSION LENS GT-2 for GR IIIx ... GT-2 Tele Conversion Lens to extend the focal length. Combined with resolution reduction, this extends the focal length ...