Archived posting to the Leica Users Group, 2016/02/12
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]I guess I should now quote the maxim by which all of us computer geeks live: "When all else fails, read the directions!" :-) (...but seriously, please let us know how you like the split image feature, Nathan.) --Peter On Fri, Feb 12, 2016 at 10:22 AM, Nathan Wajsman <photo at frozenlight.eu> wrote: > You did really well with these, but I am intrigued by the split image?I > had no idea Fuji had it. Maybe I should look in the manual after all. > > Cheers, > Nathan > > Nathan Wajsman > Alicante, Spain > http://www.frozenlight.eu <http://www.frozenlight.eu/> > http:// <http://www.greatpix.eu/>www.greatpix.eu > PICTURE OF THE WEEK: http://www.fotocycle.dk/paws < > http://www.fotocycle.dk/paws>Blog: http://nathansmusings.wordpress.com/ < > http://nathansmusings.wordpress.com/> > Cycling: http://www.crazyguyonabike.com/belgiangator < > http://www.crazyguyonabike.com/belgiangator> > YNWA > > > > > > > > > > > > > > > On 12 Feb 2016, at 07:53, Jayanand Govindaraj <jayanand at gmail.com> > wrote: > > > > Never tried it. I find Focus Peaking works quite well, even for my > weakish > > eyesight, as long as the subject is stationary. Here are some samples > which > > I took mainly at the behest of Alastair Firkin, with various lenses > mounted > > on the Fuji XT-1, all manually focused with the aid of focus peaking. All > > are just default processed in Lightroom, with no additional processing. > The > > models were my niece Shreeya, and my younger son, Aditya : > > > > The first was an unscientific look at both the Summicron and the Fuji > 56mm > > as short portrait lenses, both at f2: > > > > Shreeya - Leica Summicron: > > > http://gallery.leica-users.org/v/jayanand/album333/Leica+Summicron+50.jpg.html > > > > Shrreya - Fuji 56mm: > > http://gallery.leica-users.org/v/jayanand/album333/Fuji+56.jpg.html > > > > Then, two of Aditya with the Tele-Elmarit 90mm wide open: > > > > Natural Light: > > > http://gallery.leica-users.org/v/jayanand/album333/1+Natural+Light.jpg.html > > > > Artificial Light: > > > http://gallery.leica-users.org/v/jayanand/album333/2+Fluoroscent+Light.jpg.html > > > > Cheers > > Jayanand > > > > On Fri, Feb 12, 2016 at 11:47 AM, Peter Klein < > boulanger.croissant at gmail.com > >> wrote: > > > >> Ah, another check mark on Fuji's chalkboard. Didn't know they had a > split > >> image. How accurate is it? One advantage of a "real" RF is that the > >> physical baselength can be as long as can fit on the camera body, > whereas > >> the physical baselength of the digital split image is the diameter of > the > >> lens. Although some magnification could mitigate that...? > >> > >> I will sometimes put a Leica lens on my Olympus E-M5, usually for > >> telephoto. A 90mm Leica mount lens makes a rather compact 180mm > >> equivalent. I usually just use the digital focus magnifier. Easy. > >> > >> --Peter > >> > >> On Thu, Feb 11, 2016 at 9:52 PM, Jayanand Govindaraj < > jayanand at gmail.com> > >> wrote: > >> > >>> Both a Digital Split Image overlay and Focus Peaking as manual focus > aids > >>> are available on my Fuji XT-1, which accepts M lenses quite > effortlessly > >>> with an adapter. In fact Fuji themselves make an adapter. > >>> Cheers > >>> Jayanand > >>> > >>> On Fri, Feb 12, 2016 at 8:42 AM, Peter Klein < > >>> boulanger.croissant at gmail.com> > >>> wrote: > >>> > >>>> In theory it should work just fine. You leave the lens on infinity, > and > >>> the > >>>> adapter does the rest. The adapter must: > >>>> > >>>> -Interface to the camera's AF electronics such that the camera can > tell > >>> it > >>>> "forward, back, stop"). > >>>> -Be thin enough to allow infinity focus. > >>>> -Contain motors and a mechanism that will rack the lens out > >> sufficiently > >>> to > >>>> focus the lens to a reasonable close distance. The mechanism must fit > >> in > >>>> the adapter. This is easier to do with SLR lens adapters. M lenses > >> have a > >>>> shorter back focus distance, and M to mirrorless adapters are quiet > >> short > >>>> compared to SLR adapters. Perhaps some of the mechanism could be below > >>> the > >>>> adapter, or concentric to it.) > >>>> > >>>> The major problems with M lenses on other cameras would still be > corner > >>>> smearing and color shifts, unless the sensor's Bayer array was > designed > >>> for > >>>> M lenses. And would the autofocus be fast and accurate enough, and > >> would > >>>> using the adapter be convenient enough that you wouldn't get fed up > >> with > >>> it > >>>> quickly? > >>>> > >>>> Personally, I'd love to have an autofocus M that also did RF focusing. > >>> But > >>>> as Larry mentions, it would have to be worth someone's while to > >>>> manufacture. Most manufacturers have already passed on making their > own > >>>> rangefinder mechanism. Leica seems to be willing to make RF cameras > >> along > >>>> traditional M lines, but not to do anything radical with them. But > >> what > >>>> about something entirely new by a third party--an AF camera that also > >> did > >>>> some sort of visual rangefinder simulation in an EVF, and was designed > >> to > >>>> take M lenses. Ideally, the version for M lenses would have a Bayer > >> array > >>>> with microlens offsets licensed from Leica. The SLR lens version > would > >>>> have a more conventional sensor. > >>>> > >>>> All technically possible. The big question is whether there are enough > >>>> legacy(*) lens fans, and in particular M lens fans, to make such a > >> camera > >>>> commercially viable. > >>>> > >>>> --Peter, who actually dislikes the word "legacy." > >>>> > >>>> On Thu, Feb 11, 2016 at 4:22 PM, Larry Zeitlin via LUG < > >>>> lug at leica-users.org> > >>>> wrote: > >>>> > >>>>> About 40 years ago, give or take a decade, a precision camera make, > >>>>> probably Zeiss. marketed a camera in which the focus was adjusted by > >>>> moving > >>>>> the film plane. This simplified lenses but had the downsides of > >>> increased > >>>>> expense for the camera body and the difficulty of providing enough > >>> motion > >>>>> for long focus lenses. The idea was abandoned after a few years but I > >>>>> believe that with modern electronics it could provide automatic focus > >>>> for M > >>>>> lenses. But, of course, there would be little incentive for Leica to > >>>> adopt > >>>>> such a system. Maybe a third party could sell a universal camera > >> which > >>>>> would autofocus with all makers lenses. > >>>>> Larry Z > >>>>> > >>>>> + + + > >>>>> LUG: > >>>>> > >>>>> Any idea whether this would actually work or not? > >>>>> > >>>>> > >>>>> > >>>> > >>> > >> > http://www.thephoblographer.com/2016/02/11/the-techart-pro-lens-adapter-promises-autofocus-for-leica-m-mount-glass/#.VrywD_krJaQ > >>>>> > >>>>> Tina > >>>>> > >>>>> _______________________________________________ > >>>>> 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 > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information >