On 7 September 2011 08:06, Brian Walters <[email protected]> wrote: > > > OK. Thanks for the clarification, but is this any different from (or > better than) the focus confirmation indicator that we get with DSLRs > when used with manual lenses? >
Not so much different or better, but a practical alternative. The thing about focus confirm is that it's done through the AF system. so the camera has to be capable of operating the AF without a compatible lens out front. I guess Pentax just shorts the AF's electrical signals through the mount when there's no AF connectors present, and the other DSLRs perhaps do the same, but I don't know which of them do or don't do focus confirm with manual focus lenses (which lack AF circuitry). And what happens if you mount a plastic lens with a plastic mount? 'Suck it and see' would be my guess. The twist with the new breed of live-view cameras is that their manufacturers concede they'll be used with lenses of any number of brands and vintages and original applications, and there's no guarantee they'd all play nicely with the camera's electronics. So they've devised workarounds to ensure they'll work. My recently acquired Panny G2 (more about that later, perhaps) has a menu setting called "NO LENS" to mount and function with lenses that won't talk to it. regards, Anthony "Of what use is lens and light to those who lack in mind and sight" (Anon) -- 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.
