One can obtain a 500 mm lens for Pentax digital cameras for only $120

http://www.amazon.com/Opteka-Telephoto-Mirror-Digital-Cameras/dp/B0022VFDZW/ref=sr_1_3?s=photo&ie=UTF8&qid=1443632940&sr=1-3&keywords=pentax+500+mm+lens

Who is "Opteka" anyway?

Dan Matyola
http://www.pentaxphotogallery.com/danieljmatyola


On Wed, Sep 30, 2015 at 11:20 AM, Sandy Harris <[email protected]> wrote:
> Collin B <[email protected]> wrote:
>
>> It's also a bit on the slow side, but at the price of a fast lens in this
>> length (is there one) I can live with that as well.
>
> There is at least one for some mounts, dunno about Pentax.
> At over $20K and 20 kg, it seems a bit much:
> http://www.amazon.com/Sigma-200-500mm-Ultra-Telephoto-Nikon-Cameras/dp/B0013DAPNU
>
> The reviews are hilarious.
>
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