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Canon Rebel T7/Sigma 150-600 - Lens detaches itself

Started Jun 15, 2021 | Discussions thread
Iron Mike
MOD Iron Mike Contributing Member • Posts: 540
Re: Canon Rebel T7/Sigma 150-600 - Lens detaches itself
2

When I first purchased my 5DmkIV, the little pin that locks the lens onto the mount was broken and stayed permanently depressed down. That allowed any lens to turn and pop off (regardless of whether the button on the side of the mount was pressed or not). I promptly returned the camera to the store for an exchange.

The first thing to do is check that the pin is sticking up out of the mount when no lens is mounted, and when you put the lens on the camera it should make a little "ping" sound when the pin pops into its hole on the lens. If the pin is up with no lens mounted, and you don't hear the pin engage once you twist the lens on, then it's possible that the pin doesn't properly register with the hole on the lens.

locking pin

Cheers,

Mike

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