I did quite a lot of research on this and most people who have had this issue said it was a result of a defective "Power Aperture Diaphragm Shutter Unit For Canon 24-105MM F/4L IS USM" There are a lot of forums and blogs out there that mention this issue simply that you cannot go above f4.
EF 70-200mm f/4L IS USM. Prvotriedny objektív série L so zoomom, konštantnou clonou f/4 a stabilizátorom obrazu, ideálny na snímanie bez statívu a fotografovanie športu. Zobraziť podrobnosti. Model Canon EF 24-105mm f/4L IS II USM je objektív so štandardným zoomom, ktorý ponúka o niečo viac pri fotografovaní aj pri nakrúcaní
This Canon EOS camera shoots video in full HD, making it an ideal option for vloggers. EF 24-105mm f/4L IS II USM zoom lens provides versatility This focal range is great for everyday shots, including everything from gorgeous landscapes to detailed portraits.The Canon EF 24-105 f/4L IS lens is weather sealed without a filter, so you don't need it for weather proofing. If you are shooting digital, the camera already has built-in UV filtering, so you don't need additional filtering. If you want physical protection, get the thickest filter you can find and live with the vignetting.
The lens affected is the EF 24-105mm F4L IS II USM standard zoom, but users are advised that only particular production batches have the problem. Recent Videos. Canon says that some units with serial numbers beginning with 48, 49, 50 or 51 suffer from poor focusing when used with an AF point close to the edges of the host camera’s focusing array. KqBFMC. 30 855 700 657 431 659 996 481