Sigma MC-21

Started 3 months ago | Discussions thread
GCL Regular Member • Posts: 189
Re: Sigma MC-21

Barugon wrote:

Is there any difference between using a Sigma DG HSM lens with a MC-21 adapter and using the same lens in L-mount?

I have not done lens-to-lens testing of, for example, a Canon EF mount Art lens vs the native L mount Art lens of the same focal length - but the native L mount Sigma lenses I have used are faster focusing than Sigma lenses in EF mount on the MC-21 adapter.  The latter worked fine for me, so I am not blasting a Canon EF mount Sigma lens on the MC-21 adapter - just noting that the native L mount lenses seemed to work even faster.

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