Activity Feed Forums General Chit Chat Buying guide

  • Buying guide

    Posted by Ishrath Nayeem Mohammed on August 29, 2025 at 6:50 am

    Which one do you suggest between sony 400mm f2.8 or sony 300mm f2.8+1.4 teleconverter?

    I’m looking to buy a used 400mm but when I test them I feel the motor rotating and a little bit of moving sound when I listen by keeping my ear on it.

    Is that common for 400mm. I don’t feel that for my 200-600.

    Shamim Azam replied 5 days, 4 hours ago 2 Members · 1 Reply
  • 1 Reply
  • Shamim Azam

    Member
    August 29, 2025 at 2:25 pm

    Reach is the king when it comes to wildlife photography. I would vote for 400mm prime as it is just the right focal length for mammals. Any piece of glass between the sensor and the lens will lead to slight degradation in IQ and AF performance. I own both 600mm and 300mm primes and I can vouch for bare 300mm. It is incredibly fast and ridiculously sharp when used bare. Images with 1.4X tele are still good but you lose a stop of light. If that doesn’t matter to you much, then 300mm saves a lot of money.

    PS: Primes should be silent/near silent while focusing. If the motor noise is squeaky or higher than near silent, then I would suggest to stay away from it. It might be a faulty motor.

    • This reply was modified 5 days, 4 hours ago by  Shamim Azam.
    • This reply was modified 5 days, 4 hours ago by  Shamim Azam.

Log in to reply.