So the 1ds has the lowest pixels per mm? Hmmmm.
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Baker, Adam Sent: Thursday, August 19, 2004 1:15 PM To: '[EMAIL PROTECTED]' Subject: RE: EOS 20D > That is what I'm wondering about. I thought I remembered reading > (although I can't remember where) that the pitch is the same on all > the current Canon cmos chips, it is just the size of sensor that > generates the image size. The notion is supported by the ratio of > 6-8-11 which is > roughly inversely proportional to 1.6-1.3-1 . > > Someone must know of an authoritative source on this. > I don't know but I can easily work it out (I'm using approximate values for the image dimensions but they are close enough for this exercise) Horiz dimension for the 1.6 crop sensor is 3000 pixels (3000x2000 = 6MP) 36mm/1.6=22.5mm 3000/22.5mm=133 pixels/mm Horiz dimension for the 1.3 crop sensor is 3400 pixels (3400x2400 = 8MP) 36mm/1.3=27.7mm 3400/27.7mm=122 pixels/mm Horiz dimension for the 1.0 crop sensor is 4000 pixels (4000x3100 = 11MP) 36.0mm/1.0=36.0mm 4000/36.0=111 pixels/mm -- * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
