Canon EF 75-300 zoom ring is stiff — is that normal?

Asked 3/27/2013

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My Canon EF 75-300mm lens has a zoom ring that feels unusually stiff, and sometimes a bit jerky or scratchy when turning. Is this something that can loosen up with use, or does it suggest a fault? Should I try to fix it myself, or is it better to contact the retailer or Canon while it is under warranty?

warranty canon lens-repair zoom-lens ef-lenses

Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0

Photography Stack Exchange contributor

13y ago

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I had similar sounding problem with an ef 75-300 I bought about a year ago, It felt almost as if the outer casing of the barrel was rubbing or catching in places against the inner making the movement feel a bit jerky!
over time however using the zoom ring seems to have become a more fluent action, the front focusing ring is soft and smooth but it always was so, I suggest if the lens is still covered by warranty that you contact your supplier and discuss your concerns! regards M

Originally by user19836. Source · Licensed CC BY-SA 4.0

user19836

13y ago

AI Answer

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A stiff zoom ring on an EF 75-300 is not something you should try to fix yourself. From the shared experiences here, some lenses did feel a bit stiff or jerky at first and became smoother with use, but others were returned and sent to Canon for repair. If the action feels scratchy, catches, or seems abnormal, the safest choice is to contact the retailer or Canon while the lens is still under warranty.

Avoid disassembling the lens. Modern lenses are precision assemblies, and opening one yourself can easily make things worse and may void the warranty.

So: if it is only slightly firm, it may improve with normal use; if it feels rough, uneven, or concerning, have the seller or manufacturer inspect it.

Canon EF 75-300 zoom ring is stiff — is that normal?

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