Archived posting to the Leica Users Group, 2013/11/08
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Mark I hope that happens for you. M glass sitting around not being used is such a waste!! Scott > On Nov 8, 2013, at 3:06 PM, Mark Rabiner <mark at rabinergroup.com> wrote: > > It turned out that layer of Microlenses was par for the course in sensor > design for many and most cameras way before even the M8.. The one's for the > Leica Ms were perhaps angled a bit more inward than the others but the > technology was there in the past and present. > It strikes me that other than the non micro 4/3's spec most present camera > systems have a wide in their systems that have a rear element which comes a > bit closer to the plane of focus. So its likely the edges of their micro > lens sensor layer have their angle turned in a bit. That's why the whole > layer is there. > I think there is hope for users such as myself looking for a simple not > super high end flat box (mirrorless) full frame camera for their/ my M > glass. > The idea being the bodies would not cost seven grand. > For sure the ideal M glass enabling solution would be a new M. but I think > a > full frame mirrorless could get me out shooting with my M glass again with > results better not worse than what I'd been getting with my Nikon system. > And with a shooting solution which could take over my workflo. In other > words the camera I grab on the way out the door every day. > > >> On 11/7/13 10:14 AM, "Frank Filippone" <red735i at verizon.net> wrote: >> >> Bob Adler has stated that the dynamic range of the M far exceeds ( 2 >> stops?) >> the M9, and closely approaches his Phase 1 MF back. >> >> But back to the main discussion..... If the camera is applying >> corrections >> to the image, rather than a computer, aren't the same issues at play? To >> theory, yes. In practice, the microlenses take away part of the >> problem.... >> As Adler's shot of the Caf? shows, even at 21mm, there is some vignetting >> left, even on a M body. >> >> The sensor in the M9 ( and M8 and M) all have (M lens) tuned microlenses >> to >> help with the vignetting...... You will not get these in a non-Leica >> camera >> body. >> Of course, the amount of need of vignetting correction is dependent on >> your >> lenses... if you shoot a lot of 21mm, then it is handy that the >> microlenses >> are there. If you shoot at a minimum of 35mm, not so important..... and >> at >> 50mm and longer, not important. >> >> Personally, I do not find the vignetting issue a game killer. You can >> correct it. You can live with it, and for 150 years, it was not only >> uncorrectable, but desirable as part of the physical picture "frame". >> And >> again, it depends on your scene..... sometimes having the corners a bit >> darker is a real annoyance..... sometimes it makes not an iota of >> difference >> and adds to the ambience of the scene. >> >> The A7r is the camera Leica should be concerned with.... You may not call >> it >> a RF camera, but it represents the best of the RF camera genre..... Small, >> full featured, high resolution sensor (36MP), stealthy (? Not so sure yet, >> but the M9 is no Rollei TLR either in the noisy department), has real >> advantages in focus when in darkened lighting, reliable from the >> standpoint >> of small number of mechanical parts to go out of calibration, and best of >> all, it looks through the lens, and can use Leica (M or R) glass. If the >> focus peaking is good (jury is still out), it is a killer solution to the >> M >> and many DSLR cameras. >> >> Leica, if you are listening: The M Type 240 is going to have its lunch >> eaten because of this camera and others that will follow it. >> >> Go make an EVF only M camera. The competition is changing the >> market...... >> >> Frank Filippone >> Red735i at verizon.net >> >> >> If you needed to increase the exposure in the main part of the field by >> say >> two stops for every exposure and apply a colour correction you would >> appreciate that the correction comes at a cost of dynamic range, tonal >> depth >> and noise performance for example. It's happening in the corners for every >> frame with wides on the M9. Does it matter in practice??? yeah no maybe >> depends ;-) >> >> In the case of the M9, I can comment that the amount of correction with >> wider lenses is quite significant to achieve the desired result at all. I >> was a firmware tester for the system. >> >> The M is another discussion. I just recovered a few poor exposures that >> were >> two stops or more under (albeit minimum ISO) with excellent >> results...remarkable. >> http://www.pbase.com/hoppyman/image/153233601 >> >> >> >> >> >> >> _______________________________________________ >> Leica Users Group. >> See http://leica-users.org/mailman/listinfo/lug for more information > > > > > -- > Mark William Rabiner > Photographer > http://gallery.leica-users.org/v/lugalrabs/ > > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information