Archived posting to the Leica Users Group, 2010/07/16
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Without any thorough testing. I believe that it only occurs under certain lighting conditions. Extremely high contrast with something very dark in the middle of the frame and very bright light near the edges of the frame or even a source (of a certain size and intensity) within the frame. It is definitely about the relationship of the lens design and DMR sensor. I never ever saw it on film. And before June 5 in Memphis never noticed it before on DMR. Placing the 50 Summicron on the body with identical subject, lighting, etc. eliminates the anomaly. Same with 100 mm apo - no problem Mount the 60 and the anomaly returns. Regards, George Lottermoser george at imagist.com http://www.imagist.com http://www.imagist.com/blog http://www.linkedin.com/in/imagist On Jul 16, 2010, at 8:07 AM, grduprey at mchsi.com wrote: > I have not seen this either with the 60/2.8 Macro Elmarit R. > > Gene > > ----- Original Message ----- > From: "Jim Nichols" <jhnichols at lighttube.net> > To: "Leica Users Group" <lug at leica-users.org> > Sent: Friday, July 16, 2010 12:05:27 AM GMT -06:00 US/Canada Central > Subject: Re: [Leica] Macro > > George, > > I use the 60mm f/2.8 Macro routinely on my Oly E-1, and also on the E-510, > and have never seen that problem. > Guess I'm just lucky. > > Jim Nichols > Tullahoma, TN USA > ----- Original Message ----- > From: "George Lottermoser" <imagist3 at mac.com> > To: "Leica Users Group" <lug at leica-users.org> > Sent: Thursday, July 15, 2010 11:58 PM > Subject: Re: [Leica] Macro > > >> the R8/DMR is quite wonderful for macro >> with 100 2.8 apo macro, 60 2.8 macro >> with or without R bellows. >> >> Unfortunately I found a digital glitch >> when using the 60 (in normal - non macro - focusing ranges) >> something occurs as it interacts with the sensor >> to provide a magenta hot spot in the center of the frame >> if light sources are in the frame >> or even at the edges of the frame. >> >> I've tried to overcome it with shades, baffles >> and all manner of black card magic. >> Yet it persists. >> >> Regards, >> George Lottermoser >> george at imagist.com >> http://www.imagist.com >> http://www.imagist.com/blog >> http://www.linkedin.com/in/imagist >> >> >> >> >> >> On Jul 15, 2010, at 10:49 PM, grduprey at mchsi.com wrote: >> >>> I use my R8DMR for macro. I have the 60 Macro Elmarit R. Works nice, >>> but would like to have the 100/2.8 R. I also have the bellows R for >>> real >>> serious close up pics. >>> >>> Gene >>> >>> ----- Original Message ----- >>> From: "Henning Wulff" <henningw at archiphoto.com> >>> To: "Leica Users Group" <lug at leica-users.org> >>> Sent: Thursday, July 15, 2010 4:10:56 PM GMT -06:00 US/Canada Central >>> Subject: Re: [Leica] Macro >>> >>> George, I've found the 5DII to be a vast >>> improvement over the 5D in these sort of >>> situations. I don't have an Ultima but do have >>> the 17 and 24 Canon TSE lenses. If you compose >>> and focus only on the image coming to you by way >>> of the mirror you really con't use the tilt >>> function on these lenses. On the other hand, in >>> magnified Live View mode accurate tilts are a >>> piece of cake. I've done a lot of table top stuff >>> with LF, and I wish I had had something like >>> this. It truly is a revelation, and no dark cloth >>> and loupes required while hot lights are burning >>> into your ears. >>> >>> Live View on this camera (and the m4/3 cameras >>> I'm familiar with) is accurate enough to >>> realistically and correctly measure and judge the >>> effects of focus shift in various lenses, let >>> alone accurately set up tilts or focus macro >>> objects. The fact that the screen is as bright at >>> f/16 as at f/2.8 is a huge help. >>> >>> >>> >>> >>> At 3:29 PM -0500 7/15/10, George Lottermoser wrote: >>>> I agree totally Mark. >>>> >>>> I continue to NOT understand >>>> the quest for easier, less, smaller, cheaper, less, etc ? >>>> >>>> Yes iPhones et al are fun and >>>> in the hands of skilled visionaries, >>>> can produce art. >>>> >>>> I just did a series of macro images >>>> using the 5D on the Ultima with an 80 Rodenstock Apo enlarging lens >>>> with the intention of using shifts and tilts. >>>> The viewing screens (both the original and the >>>> brightscreen) just suck (for this kind of work). >>>> So I replaced the 5D with the R8/DMR >>>> and immediately found my self in big, huge, >>>> heavy, difficult, tilt/shift macro heaven; >>>> achieving exactly what I envisioned in my mind. >>>> >>>> The only body that could be better (given my lenses and other kit) >>>> would be an M9/90macro/Viso because of the additional real estate; >>>> or better yet a 39CFV, Leaf Aptus II-7 to 10, or >>>> PhaseOne 25+, 45+ or 65+, back. >>>> With the M9 mega-tool - the question is not >>>> "what what other camera can I get to make macro >>>> easier?" >>>> The question is "What can I get to do macro with this incredible M9 >>>> tool?" >>>> >>>> If all I had was an M9 and wanted to do macro >>>> I'd be all over the 90 macro and viso with bellows and all sorts of >>>> lenses. >>>> (but going from M9 to 1.5, 4/3 or smaller? What is the point? >>>> unless all we're talking about is "oh look >>>> there's a neat bug to show on the web" type of >>>> approach) >>>> >>>> (The 5D remains a fun and functional tool with Canon lenses) >>>> >>>> and of course YMMV >>>> >>>> Regards, >>>> George Lottermoser >>> >>> -- >>> >>> * Henning J. Wulff >>> /|\ Wulff Photography & Design >>> /###\ mailto:henningw at archiphoto.com >>> |[ ]| http://www.archiphoto.com >>> >>> _______________________________________________ >>> Leica Users Group. >>> See http://leica-users.org/mailman/listinfo/lug for more information >>> >>> _______________________________________________ >>> Leica Users Group. >>> See http://leica-users.org/mailman/listinfo/lug for more information >> >> >> _______________________________________________ >> Leica Users Group. >> See http://leica-users.org/mailman/listinfo/lug for more information >> >> > > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information