Correct but it can also case inaccurate mettering dependent on the metering/finder lens array/Fresnel plus of course it runs out of steam early as the light falling on it diminished as the aperture is stopped down, so the sensitivity of the system becomes compromised leading to metering errors.
On 18 September 2014 14:20, JC OConnell <hifis...@gate.net> wrote: > this makes no sense because if you meter stopped down, it doesn't matter > what the actual fstop > is, its measuring the shooting light at the sensor plane and it takes any > inaccuracy in actual fstop into account. > > On 9/17/2014 9:52 PM, Zos Xavius wrote: >> >> Ricoh claims that the aperture mechanism used in the M/K series is not >> accurate. My experience with green button stop down metering tells me >> that there might be something to that given the liberal amounts of EV >> compensation I end up using with various lenses. Oddly wide open >> meters fine with the green button. Hmmmm. >> >> On Wed, Sep 17, 2014 at 9:44 PM, Mark Roberts >> <postmas...@robertstech.com> wrote: >>> >>> Mark C wrote: >>> >>>> I'd expect all A, F and FA lenses would work with a FF Pentax. That's a >>>> lot of legacy glass. If they keep the green-button-stop-down-metering >>>> feature, there is still compatibility with even older glass. >>>> >>>> I'd like to see Pentax put more effort into attracting new buyers who >>>> will want new lenses and leveraging that to rebuild the product line. >>>> Investing in the very small number of people who bought lenses decades >>>> ago and don't want to upgrade is not a good business strategy, >>>> especially when your current products support this market segment better >>>> than most of your competitors. >>> >>> Yes, attracting new buyers is critical. The other day I was in Best >>> Buy picking up a USB cable or some such and walked through their >>> camera display. I found myself thinking how everything in there looked >>> the same and that the new K-S1 would really stand out. The old farts >>> that populate the PDML might not like it, but that's beside the point >>> in the wider world. >>> >>> -- >>> Mark Roberts - Photography & Multimedia >>> www.robertstech.com >>> >>> >>> >>> >>> >>> -- >>> 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. > > > > -- > 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. -- 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 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.
