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RF-S Lenses - What We Know and What is Rumored

Started 10 months ago | Discussions thread
SteveinLouisville
SteveinLouisville Senior Member • Posts: 1,586
Re: RF-S Lenses - What We Know and What is Rumored

bclaff wrote:

What we know:

Canon has announced two APS-C R mount cameras the R7 and the R10.

They have also announce two "kit" lenses:
RF-S 18-150mm F3.5-6.3 IS STM
RF-S 18-45mm F4.5-6.3 IS STM

From lens construction diagrams on the Canon site we know that the
RF-S 18-150mm F3.5-6.3 IS STM
has the same optical layout as the
EF-M18-150mm f3.5-6.3 IS STM

And we know that the optical layout of the
RF-S 18-45mm F4.5-6.3 IS STM
does not correspond to any previous Canon lens design.

What is rumored:

I have seen a list of 5 additional RF-S lenses that are rumored for future release:
RF-S 11-55mm f/4-4.5 IS STM
RF-S 16-55mm f/2.8 IS USM
RF-S 55-250mm f/4.5-7.1 IS STM
RF-S 22mm f/2 STM
RF-S 32mm f/1.4 STM

of these only the two prime lenses correspond to existing EF-M lenses.
So at least 3 of these 5 lenses would be new designs.

Naturally, rumors are only rumors.

Reusing optical designs

While I'm sure there is disagreement I see no issue with reusing optical designs particularly to "jump start" a new product line such as the RF-S lenses.
Resources are limited and it takes a long time to design a new lens from scratch.

The most obvious (to me) next two budget line RF-S lenses would be an RF-S 10-18 and an RF-S 55-250.  Add a RF-S 24 2.8 and that would be a solid start to the RF-S lineup.

 SteveinLouisville's gear list:SteveinLouisville's gear list
Canon EOS RP Canon EOS R7 Canon EF 17-40mm f/4.0L USM Canon EF 40mm f/2.8 STM Canon EF-S 24mm F2.8 STM +9 more
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