On Feb 24, 2013, at 7:55 , Bipin Gupta <[email protected]> wrote: > I took out the Leica Film SLR today to give it some exercise and a warm > sunlight bath. I attached the Tamron 28-200 Adaptal and looked thru the > viewfinder. It definitely appeared brighter than the K-5s. > So I put another Tamron 28-200 I have from my MZ-5n days, on the K-5. > And lo & behold - the Leica's viewfinder WAS Brighter. No question. > Both use Penta Prisms, and Pentax has always claimed they were the > FIRST to use Penta Prisms in their SLRs. > So what's happening here - an ancient Leica and the latest Pentax-Ricoh?
Look at the relative sizes of the focusing screens and realize that while each may have the same amount of light "per square centimeter" hitting them, one of them has a lot more area - which equals more light. The smaller-sensor viewfinders CANNOT be as bright as a viewfinder with a larger focusing screen.. -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.
