• Want to Buy Camera Gear (WTB)

  Used Sony 400mm f2.8 testing

  Posted by Ishrath Nayeem Mohammed on August 29, 2025 at 6:43 am

  Hi all I’m a wildlife photographer. I have 200-600 and now I want to buy a used 400mm f2.8. I was testing it and I’m feeling the auto focus motor moving and a little bit of sound I can hear. Is this normal? I don’t feel that vibration on my 200-600.

  Sudhir Shivaram replied 4 days, 21 hours ago 2 Members · 1 Reply
• 1 Reply

• 

  Sudhir Shivaram

  Administrator

  August 29, 2025 at 11:07 pm

  That’s quite normal. It’s the OSS at work. But of course I really need to hear the sound to make sure it’s what I am assuming.

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