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When will Sigma and/or Tamron produce RF lenses?

Started Jan 15, 2020 | Polls thread
Peter Kwok
Peter Kwok Senior Member • Posts: 2,635
Is a matter of question on HOW
1

The easiest way is to redesign the current EF mount lens as RF mount lens, by making the barrels longer in place of an adaptor, resulting in a collection of lens that is slightly longer and heavier.  However, until Canon sells substantially more R bodies than DSLR, they will only be available in EF mount.

Both Sigma and Tamron have a line of lens for Sony FE mount. Putting them in RF mount can take advantage of the shorter flange distance. Given both companies know how to build AF lens for Canon EF mount, it is easy to release them as Canon RF mount.  To a Canon R body, they will appear as a 3rd party EF mount lens on an adaptor.  These will most likely be the first native RF mount lens available. Samyang is already doing it.

None of these can take advantage of the larger RF mount diameter or the high speed link provided by the two extra pins.  I will not hold my breath on these type of designs.

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Peter Kwok
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Canon EOS 5DS Canon EOS R5 Canon EF 16-35mm F4L IS USM Canon RF 14-35mm F4L IS USM Canon EOS M6 +8 more
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