“Along the focal length range, where do the changes in maximum aperture occur? When zoomed out to 100mm and aperture at f/5.6, as you zoom in to 400mm, at what focal lengths does the aperture change until you get to f/8?”
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Gpod question 100-122mm = F5.6 123-155mm = F6.3 156-258mm = F7.1 259-400mm = F8
Sorry, there was a problem. Please try again later.That is something that should be in the specifications, but perhaps Canon thinks you don't care, otherwise you would spend more for a lens with a fixed maximum aperture. Using an R6 in manual mode, I get these values: f5.6: 100-113mm f6.3: 113-156mm f7.1: 156-259mm f8: 259-400mm The data above is as reported by EXIF data of the image files. You'll notice I give the same focal lengths for the end of one range and the beginning of the next. This seems to be due to whether you're zooming in or out. For example, as I'm zooming in and see the aperture value change from 5.6 to 6.3, I can zoom out slightly then in slightly so that I'm still at 5.6. In other words, 113mm is the largest focal length I can achieve while staying at f5.6, and when zooming out I can get down to 113mm with it staying at f6.3. Playing around nudging the zoom ring, I got an f7.03 at 259mm. I would take these values as approximate, rather than guarantees. Manufacturing tolerances might result in slightly different transition values with another lens sample.
Sorry, there was a problem. Please try again later.Sorry, I don't have this lens. Maybe you could find an in-store demo to check it yourself. It is "nice to know" information, especially at the lower end of the focal range so you know when you lose that f/5.6. But didn't you comment elsewhere that you're using these competitive options with the better maximum aperture offerings (but of course an EF-RF mount adapter is needed): Sigma EF 100-400mm f/5-6.3 (67mm filter size) Sigma EF 150-600mm f/5-6.3 (95mm filter size, so you know that's a big lens)
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