So I have a Canon EOS 250d and I bought a used Canon EF-S 55-250mm f/4-5,6 lens. When I mounted the lens on my camera and only while using live view I noticed a constant weird sound, can't really explain it well but I left a mediafire link so you can hear it yourself. What could be the cause of this sound? Again, it's present even if i'm not focusing and even with the IS off and manual focus.
If the noise only occurs with one newly acquired used lens, I'd return it. Buying used equipment can be positive or negative depending on the source. I recommend buying used gear from stores like KEH, Lens Rentals, B&H or Adorama. Avoid purchasing from Amazon marketplace, eBay, etc. Lenses from private parties and these sellers are not often checked for proper operation or function. Some times a good deal, it too good to be true.
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07/31/2023: New firmware updates are available.
05/31/2023: New firmware updates are available.
05/18/2023: New firmware updates are available.
04/20/2023: New firmware version 1.4.1 is available for EOS R3
03/30/2023: New firmware updates are available.
2/07/2023: New product announcements!EOS R8 EOS R50RF-S55-210mm F5-7.1 IS STMRF24-50mm F4.5-6.3 IS STMRF15-30mm F4.5-6.3 IS STM