TTL AF is always performed with the lens wide open regardless of the taking aperture.
On 6 November 2014 03:25, Bryan Jacoby <[email protected]> wrote: > On Mon, Nov 3, 2014 at 6:17 PM, Rob Studdert <[email protected]> wrote: >> no phase detect AF system >> is designed for an 18mm f1.8 lens.dc-hsm-art/aberrations-and-flare.html > > That's true, but at the same time dpreview had no complaints about AF > performance with this lens on Nikon (but they did have problems with > Canon). > > What do you think of the AF at more typical apertures, say f/2.8? > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- Rob Studdert (Digital Image Studio) Tel: +61-418-166-870 UTC +10 Hours Gmail, eBay, Skype, Twitter, Facebook, Picasa: distudio -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
