Mounting Canon lens on the Lumix S1 with the Sigma MC-21

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The Sigma MC-21 is a mount converter which allows you to use Canon EF lenses on the Lumix S1 and other L-mount cameras.

You can buy the Sigma MC-21 from this affiliate link here (BEWARE! Make sure to buy the correct EF to L mount adapter, NOT the Sigma SA to L mount).

You won't get continuous autofocus on your lenses and the autofocus is a bit slower but you will still have autofocus!

The Sigma MC-21 also powers lens Image Stabilisation which is pretty neat.

The fact that you no longer have continuous autofocus is not great but at least the S1 has focus peaking, which is handy for manual focus shooters who might not be using continuous AF anyway. Timelapse photographers don't necessarily need AutoFocus, as you usually set up your shot once and then switch to manual focus anyway (so as to not trigger the focus for every photo in the sequence).

So far I can confirm that single shot autofocus as well as lens stabilisation (where applicable) works for the following Canon EF lenses mounted on the Lumix S1 using the MC-21:

  • Canon EF 24 f1.4 L MkII
  • Canon EF 70-200 f2.8 L IS MkII
  • Canon EF 24-70 f4 L IS
  • Canon EF 16-35 f4 L IS
  • Canon EF 40 f2.8
  • Canon EF 50 f1.8

The good thing is, if your Canon lens does not have Image Stabilisation you can enable the IBIS )In Body Image Stabilisation) on the S1 sensor. This is truly the best of both worlds!

The MC-21 is a great accessory for people that own Canon glass as well as an S1/S1R/S1H Lumix camera.

You can buy the Sigma MC-21 from this affiliate link here (BEWARE! Make sure to buy the correct EF to L mount adapter, NOT the Sigma SA to L mount).

Want to learn more about timelapse photography? Check out my e-books:

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