There is nothing to convert because the focal length doesn't change.

The equivalence is more of a shorthand for photographers who were
accustomed to how 35mm focal lengths worked, and it has really
outlived it's utility.

On Mon, Apr 12, 2010 at 7:26 PM, Tanya Love <tanyal...@bigpond.com> wrote:
> I thought that "equivalents" were only if you were using FA lenses?  I
> thought that the Das removed this need to "convert"?
>
> Tan.
>
> -----Original Message-----
> From: pdml-boun...@pdml.net [mailto:pdml-boun...@pdml.net] On Behalf Of Bong
> Manayon
> Sent: Monday, 12 April 2010 11:29 PM
> To: Pentax-Discuss Mail List
> Subject: Re: Ultra-wide zooms
>
> On Mon, Apr 12, 2010 at 9:17 PM, David Parsons <parsons.da...@gmail.com>
> wrote:
>> Please repeat after me:  There is no such thing as equivalent focal
> length!
>>
>> They are APS-C lenses and the focal lengths are as marked.  Super wide
>> angle lenses.
>>
>
> Amen.
>
> I take those numbers for their face value.  I stopped thinking of
> equivalents a long time ago.
>
> Bong
>
> --
> Bong Manayon
> http://www.bong.uni.cc
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