Archived posting to the Leica Users Group, 2014/12/14
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Ah yes, that extra 0.07 has an effect with big numbers ;-) john -----Original Message----- Actually it's a FF EQ of 1074 mm. The DMR has a 1.37 crop factor for the sensor inside the film rails. I've tried this setup once of twice, but you need a lot of light and a very steady tripod/head. It's also quite dark on the VF too. Great shot, Doug, as that's really hard on that set-up. Best wishes, Charlie www.charlie-chan.co.uk On 14 Dec 2014, at 18:17, John McMaster <john at mcmaster.co.nz> wrote: > 280 * (1.4 * 2 *1.3 (APC-H)) = 1019mm > > john > > -----Original Message----- > From: LUG [mailto:lug-bounces+john=mcmaster.co.nz at leica-users.org] On > Behalf Of Mark Rabiner > Sent: Monday, 15 December 2014 6:49 a.m. > To: Leica Users Group > Subject: Re: [Leica] IMG: stacked extenders! > > So is that 280 * 3.25 = 910mm's ? > > > On 12/13/14 7:39 PM, "Doug Herr" <wildlightphoto at earthlink.net> wrote: > >> Had to try it: 280mm f/4 APO + 1.4x APO-Extender-R + 2x >> APO-Extender-R on the R8/DMR (on a big Gitzo braced against a 6" x >> 12" post) >> >> http://www.wildlightphoto.com/birds/picidae/melanerpes/lewood04.html >> >> Doug Herr >> Birdman of Sacramento >> http://www.wildlightphoto.com >> >>