On Mon, Jan 27, 2014 at 3:28 PM, John <johnsess...@yahoo.com> wrote: > I expect it is "full-frame" in the sense that it would not vignette the > image from a "full-frame" lens. I don't see how it would make an APS-C > lens have a larger image circle.
You can demonstrate it for yourself with a card held behind the lens (with and without the teleconverter). You will have to hold the aperture lever open with your finger to get enough light to see on the card. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
