stop down metering on the pentax dslrs is NOT a focus issue because you only take a reading with the green button to meter, you can than still focus with the lens wide open afterwards....
-- J.C. O'Connell (mailto:[email protected]) Join the CD PLAYER & DISC Discussions : http://tech.groups.yahoo.com/group/cdplayers/ http://launch.groups.yahoo.com/group/cdsound/ -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Charles Robinson Sent: Thursday, December 30, 2010 4:30 PM To: Pentax-Discuss Mail List Subject: Re: Basic image editing & Manual focussing On Dec 29, 2010, at 17:52, Eric Weir wrote: > > On Dec 29, 2010, at 6:26 PM, J.C. O'Connell wrote: > >> that's correct, I bought it off ebay from china vendor for $20. >> Pentax doesn't make one because it (RF) slightly throws off the stop >> down metering at small apertures. It's a trade off I don't care >> about. > > Thanks. After posting my previous response I re-Googled and did come > up with a Chines manufacturer. They have one for the K10D and DS. at > $30. I checked eBay and came up with this > http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=180326554642&fromMa > keTrack=true&ssPageName=VIP:watchlink:top:en which is even better, > includes tweezers, etc. The instructions couldn't be clearer than > those at this link. > I have a split-screen KatzEye which I'd originally ordered for my DS, then used in my K10D for a while. I removed it from the K10D when I got the K7. If you're interested in a deal on "the real thing" just let me know. > > But all this brings up another question: What is the difference > between "open aperture" and "stopped down" metering? Would that be > metering before and after setting exposure, assuming you're not > shooting wide open? And what are the pros and cons? > With "Open Aperture" metering, the lens stays wide open even as you adjust the f-stop settings, and the camera is told what the lens is going to stop down to and adjusts accordingly. The aperture is only actually stopped down when you make the exposure. Your viewfinder stays bright and it's easy to focus. "Stopped down" metering means that when you twist the f-stop ring, the lens stops down RIGHT NOW. The camera makes its exposure decisions at all times based on the actual amount of light coming through the lens. Small aperture=dark viewfinder=trickier focus. Especially in dim-light conditions. -Charles -- Charles Robinson - [email protected] Minneapolis, MN http://charles.robinsontwins.org http://www.facebook.com/charles.robinson -- 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. -- 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.
