Re: Re:EOS 100-300mm f5.6L with Tamron 1.4x SF AF

[Tim Munro]

----- Original Message -----
From: <[EMAIL PROTECTED]>
> Don't know why the camera thinks it is still 5.6 with the 1.4 converter;
the
> 100-300L is an older design and the Tamron may not be communicating
properly
> with the body.


The Tamron 1.4x convertors do not have a chip to alter the information from
lens to camera, even the SP series convertor. That is why the maximum
aperture display, and focal length recorded, is always incorrect. The camera
exposure will be correct though without any compensation. The Tamron 2x
convertor does alter the info.
Regards, Tim

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