Archived posting to the Leica Users Group, 2007/04/10
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Stan, I need to start with the disclaimer that I don't have an M8! Leica calls the crop factor an extension factor. Anyhoo it is 1.33 So add a third to the 35mm equivalents. This is a little different to your diagonal calculation. That is giving you a theoretical "normal" view but by that same theory "normal" on a 35mm is about 43mm focal length. So using the extension factor: 21 on the M8 would approximate the field of view of the 28 (27.9)on an M7 28 on the M8 would approximate the field of view of the 35(37.24)on an M7 35 on the M8 would approximate the field of view of the 50 (46.7)on an M7 And your favourite 50 becomes a yummy shortish portrait 67. Of course as we all know the framelines themselves are only approximate. Cheers Hoppy -----Original Message----- From: lug-bounces+hoppyman=bigpond.net.au@leica-users.org [mailto:lug-bounces+hoppyman=bigpond.net.au@leica-users.org] On Behalf Of Stan Yoder Sent: Wednesday, 11 April 2007 14:25 To: lug@leica-users.org Subject: Re: [Leica] 21 % 24 Lenses I did the math on the diagonal of the 18x27mm sensor of the M8. Turns out to be 32mm near enough, which is what the 24 becomes on an M8. So the 24 is the theoretical "normal" for the M8. However, the 50mm 'normal' lens on 35mm film cameras would be better matched by a 28mm on the M8 (=37mm.) Actually, the 28 framelines of the M8 VF include slightly more than the 50 lines of my M2's VF. And, since a 35mm lens is/was the functional 'normal' with film for many of us, a 21mm lens would be the near-equivalent on an M8. Or am I all wet? Stan Yoder Pittsburgh _______________________________________________ Leica Users Group. See http://leica-users.org/mailman/listinfo/lug for more information