get a bellows then you have adjustable magnification. jco ---------------------------------------------------------------------------- J.C. O'Connell mailto:[EMAIL PROTECTED] http://jcoconnell.com ----------------------------------------------------------------------------
-----Original Message----- From: William Robb [mailto:[EMAIL PROTECTED] Sent: Thursday, March 18, 2004 7:29 PM To: [EMAIL PROTECTED] Subject: Re: Slide Dup for *ist D ----- Original Message ----- From: "William M Kane" Subject: Slide Dup for *ist D > Hey all, > > Just received my Slide Holder 1x . K from eBay . . . the seller has > more (or at least I saw another listed by him) . . . very nice purchase > . . . brand new in the box, it even had the plastic bag around it > still! > > Anyhow, as I am looking through this I'm imagining there is a good > chance that this item could be used on the *ist D as a slide copier . . > . Basically here's the setup: > > Camera + 12 mm extension + Reverse Adapter K 52mm + Slide Holder 1x K > > This gives you a mag of 1.00 on a 35 mm system. > > Unfortunately we need a lower magnification, and my mind isn't working > too well right now . . . I figure we either need a lower mag lens or > higher mag lens, but can't get my brain around the reversed lens . . . > do we want a 35 mm or an 85 mm lens reversed? I don't have either in > the 52 mm filter range . . . > > So for all you math/lens majors, what lens do we need? I am pretty sure you are going to need a combination of a longer focal length lens, and more lens extension from both the camera and the slide. I still haven't managed a good slide duping system for the ist D, so if you could report on your experimrnts that would be grand. You could probably use a step down ring on the reverse adaptor and take the lens down to 49mm. If there is a bit of vignetting, it isn't going to matter much, as the format will still be inside the projected circle. William Robb William Robb
