I am looking to buy a telephoto lens used "L series" primary objective of my Canon DSLR.?
I want a 400 mm f 5,6 is not objective photography.However to wildlife, they do not want to buy the lens with out some sort of checklist. I wonder if anyone has any suggestions for things specific for a major telephoto L-series, and if there's anything in particular, these lenses have to make them poor or "lemons" in comparison with other lenses. Thank you!
You want to look at the glass at both ends of the lens. Check for scratches on cleaning the front and rear elements. Then check inside the lens at different angles by observing that, in light with the two ends of the target opposite Make sure there isn't any moisture or lots of dust inside. Then check the operability of the goal to connect a camera to it and focuses on different themes and different stopped taking pictures down in various openings to ensure that openness works. Turn the focus ring a bit and make sure its smooth and shake nothing about. Finally, take a look at aesthetic condition Objective. Do you look beat up your state? Some scratches in the paint is fine, but if it is really excessive and the lens mount seems a beating, get away. Also ask the owner who bought it and when. Also ask if they ever brought the target for the service Canon would help to see if you have had problems with her before. Canon also has a date code on the lens mount to see when it was done.
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