Canon EF 40mm STM AF frame selection?

Started Oct 24, 2012 | Questions thread
OP Springf Junior Member • Posts: 25
Re: Canon EF 40mm STM AF frame selection?

WilbaW wrote:

I would interpret it like this - High accuracy can be used in the center, and it can also be used in other than the center for the following cameras...

I don't know of any way to find out whether an f/2.8 or f/5.6 (or f/8) point was used.


I have contacted Canon support, according to the reply, unfortunately, other than the listed camera, all other camera's center cross point cannot be activated by this lens...

This is the quote from the reply: "

Thank you for contacting Canon product support.  I am sorry that your camera may not be in the list for cross type AF points.

Yes, this is correct.  If your camera is not in that list, then it doesn't have cross type AF points.  We regret any inconvenience that this may cause you at this time.


so, said in another way, this lens' f/2.8 is not as open as other f/2.8 lens..

 Springf's gear list:Springf's gear list
Canon EOS 6D Sony Alpha 7R II Canon EF 50mm f/1.4 USM Canon EF 85mm f/1.8 USM Canon EF 40mm f/2.8 STM +3 more
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