Archived posting to the Leica Users Group, 2014/05/02
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]I would add two comments there. I have seen three M9 cameras where the sensor cover glass was cracked by the wrong method. Typically finger pressure with a micro-fibre cloth. That very thin cover glass is bonded to the sensor assembly and hence the repair is very expensive. My second comment is that the M (Typ 240) has a menu function supporting sensor inspection. Using a target monotone surface (I use a monitor screen) it can produce an LCD image with sensor surface irregularities exaggerated and against a simulated image of the mount (so transposed to right way around to identify which corner etc). It is genius but can be depressing. I think an illuminated sensor scope is the simplest tool of tool though. Cheers Geoff http://www.pbase.com/hoppyman On 3 May 2014 03:22, Don Dory <don.dory at gmail.com> wrote: > I clean a lot of sensors, maybe ten a day including the dreaded D600 oil > issue. Use a blower with a lot of thrust to blow the dirt/dust off the > sensor; start by holding the camera mount down then work from the outside > of the mount into the shutter region. Whatever mode your camera has to > clean the sensor engage that to open the shutter and blow off the sensor a > few times. Put one and at most two drops of sensor cleaning fluid on the > correct size swab(4/3, aps-C, H, FF) and sweep the swab in one direction > with a moderate/light touch across the sensor maybe twice. You should be > fairly quick as the fluid is essentially a highly volatile > alcohol/ether/ketone mix. Blow off the sensor again. To confirm you got > the dust and oil take an image with a normal to telephoto lens set to > infinity and at around f16 of one of your slide sorting panels or some > other plain light colored background using a high enough ISO that your > shutter doesn't drag. > > Examine the resulting almost 18% gray image at whatever magnification makes > sense for the images you create and repeat the cleaning process as needed > until the offending detritus is gone. > > I hope this helps, the cover glass really isn't that delicate and if you > can clean the glass of DR Summicron without scratching it then you can > clean your sensor; just blow off the dust first so the only issue is oily > grime that comes mostly from urban/polluted air. Dust will just blow off > although electrostatic forces can make you think it won't. > > This once I wouldn't use Dr. Ted's lens cleaning method as even well > laundered it probably isn't the best choice. > > > On Thu, May 1, 2014 at 4:39 PM, <grduprey at mchsi.com> wrote: > > > No worse than dragging a swab across the sensor, and all it takes is a > > gental touch to pick up the crud. I also use a hand blower first though. > > > > Gene > > > > ----- Original Message ----- > > From: "Geoff Hopkinson" <hopsternew at gmail.com> > > To: "Leica Users Group" <lug at leica-users.org> > > Sent: Thursday, May 1, 2014 8:58:14 AM GMT -06:00 US/Canada Central > > Subject: Re: [Leica] M Sensor Cleaning: people's current favorite devices > > and supplies and techniques? > > > > I get nervous with these methods that involve pressing on the coverglass > > personally. I know that Solms has shown a video of this in action. Just > my > > personal feelings > > > > > > Cheers > > Geoff > > http://www.pbase.com/hoppyman > > > > > > On 1 May 2014 23:53, <grduprey at mchsi.com> wrote: > > > > > I use the Gel Stick from Eyelead. This is also used by the Leica > > Factory. > > > It is easy and quick to use and no messing with liquids etc. > > > > > > Gene > > > > > > ----- Original Message ----- > > > From: "Jeff Moore" <jbmmllug at jbm.org> > > > To: "Leica Users Group" <lug at leica-users.org> > > > Sent: Wednesday, April 30, 2014 7:04:27 PM GMT -06:00 US/Canada Central > > > Subject: [Leica] M Sensor Cleaning: people's current favorite devices > and > > > supplies and techniques? > > > > > > During recent fussing-about with a photo containing a vast expanse of > > > sky, shot with the lens stopped down reasonably far... I found myself > > > no longer able to blissfully ignore whatever crap has collected on the > > > sensor of the newish M. > > > > > > I'm really bad about getting around to sensor cleaning, but I think > > > I'm going to have to bite the bullet. This camera seems particularly > > > fond of getting stuff on its sensor, possibly partly because of the > > > time it spends with the shutter open during live-view interludes. > > > > > > So anyway: do the experienced sensor-cleaners in the LUG have current > > > favorite tools and supplies to use for this chore? I remember years > > > back there was talk of butterflies and I dunno what-all-else. > > > > > > What are people feeling comfortable with these days, for sensor safety > > > and efficacy? Are there distinct dry and wet approaches? > > > > > > So far what I've come up with searching the LUG is references to > > > Eclipse fluid, and looking at that vendor's info, it seems that the > > > "Type 3" swab are the right size for the M240's full-frame sensor. > > > > > > Anything to add or change, any particular gotchas to warn of? > > > > > > Thanks in advance... > > > > > > -Jeff > > > > > > _______________________________________________ > > > 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 > > > > > > -- > Don > don.dory at gmail.com > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information >