<yawn> More dubious math....
tv > -----Original Message----- > From: Collin Brendemuehl [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, January 15, 2003 9:23 PM > To: [EMAIL PROTECTED] > Subject: RE: Can digital beat 6x7? Answer seems to be yes > > > ****************************************************** > Tech weenie responses interspersed. > ****************************************************** > ]Date: Wed, 15 Jan 2003 19:43:42 -0500 > ]From: "J. C. O'Connell" <[EMAIL PROTECTED]> > ] > ]About a week ago I was pondering 35mm digital > ]vs medium format film. Assuming you get a killer > ]35mm digital sensor, the digital limit will be determined solely > ]by the lens. say 100 line PAIRS / mm that equates > ]to about 32Mpixel > > ****************************************************** > > Don't forget that color gets the whole color spectrum @ each point. > Double your equivalency to 64Mp & that's closer. > > ****************************************************** > > ]But with medium format, the lenses arent as sharp > ]so they lose the edge there as well as the limits of the film > ]resolution. I also calculated around 32Mpixel > ]for 6X7 with film. > > ****************************************************** > Modern medium format lenses come pretty close to > 35mm lenses. Commonly 90% as good. So, .9 * 64M * ( > (2.65x1.75) / 1.5 ) > (where 2.65x1.75 is 6x7 sq in. area that is approx the equiv > 1:2 ratio of 35mm form factor and 1.4 is roughly the sq in > area of 35mm) > That would be rounded to 190Mp to equal 6x7 film results. > When the larger sensors go into higher production, > then a new Digital Brotherhood will be necessary. > That's when we'll be picking up Pentax 6x7 & 67 & 67II bodies > for $10 in thrift shops. > ****************************************************** > > ]My conclusion ended up being it's a toss up, 35mm > ]digital, taken to the max will equal 6X7 with film. > ]6X7 with film gear is far cheaper at this point but depending > ]on how much you shoot, high end 35mm digital could > ]be cheaper in the long run and there are far more > ]variety of smaller,lighter lenses avail. with 35mm. > ] > ]JCO > > ****************************************************** > Just some thoughts. > :) > ****************************************************** > >
