Am trying to get 1.4x extender for my Sigma 150-600 contemporary lens (canon Mount), would like to use it for wildlife / bird photography.

Camera am using: 5D Mark III (placed order for R5 - waiting on it :))

Does 1.4x TC works well on this lens?

If So which one should i get Canon 1.4x or Sigma 1.4x


1 Answer 1

  1. Better get the Sigma, the lens is designed for it

  2. The 1.4 TC will make it a 840mm lens, but also a F/9 lens. So:

    • The AF will struggle, assuming it works at all, forget it for birds in flight (but then, aiming at birds in flight with a 840mm lens requires a lot of training)...
    • Even with decent IS, you don't want to get too long exposures (especially on a dashing sparrow), you need all the light you can and the TC is taking some.

So IMHO, the TC will soon return to your bag (I have one, but I don't use it for wildlife...).

  • \$\begingroup\$ Yes I did order sigma 1.4x and waiting on it. Will give a try, if doesn't works for me then goes into the bag.:) \$\endgroup\$
    – Sreedhar
    Sep 11, 2020 at 3:12

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.