You're both wrong. It's either no darker (just cropped to a smaller area) - so just as bright in illumination per equal area (or equal solid angle submitted at the eye), or it's 1/(1.5)^2 as much total illumination, which is a little over one stop difference (it's like going from f/1.4 to f/2.1).
On Mon, Jun 26, 2006 at 01:14:10PM +0100, John Forbes wrote: > Your maths is wrong. .33 darker. And as the viewfinders happen to be > very good, I personally don't notice the difference. It's only like going > from a 1.4 to a 1.7 lens. > > John > > On Mon, 26 Jun 2006 12:12:53 +0100, Martin Trautmann <[EMAIL PROTECTED]> > wrote: > > > On 2006-06-23 15:21, John Francis wrote: > >> All the Pentax DSLRs ar so-called APS-C sensors - around 24mm x 16mm. > >> This means the field of view you get with any lens is the same as the > >> field of view you get on a 35mm camera with a lens 1.5x the focal > >> length. > > > > ... while the view finder is 1/1.5 darker!? (67%) > > > > Martin > > > > > > -- > Using Opera's revolutionary e-mail client: http://www.opera.com/m2/ > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
