Archived posting to the Leica Users Group, 2014/07/04
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]The Leica digital M cameras of course have much thinner cover glass over the sensor assemblies than with other designs. Excessive pressure can crack that cover glass, for example pressing with a finger tip on a pad to try to scrub off some persistent mark. Personally I use a CLEAN sensor brush for loose particles (now I have a rocket blower too) and then if necessary a wet clean. Now I use the photosol products for that. They have an excellent demo video on their website on the right way to use swabs as well. It's funny that there is such a big variation in people's experiences regarding how much of a problem dust is. I do much more in studio well stopped down of late which means any speck is very visible on the plain backgrounds. But my M has done 10,500 frames now and I have had to clean the sensor cover glass very very few (maybe two or three wet cleans) times. There is an option to make a simulated view that exaggerates the size of any specks if you want to be depressed! I find that an illuminated sensor scope is the perfect tool to see exactly where any foreign body may be present. Cheers Geoff http://www.pbase.com/hoppyman On 5 July 2014 08:05, Frank Filippone <red735i at verizon.net> wrote: > Very interesting....if there is a persistent spot, they use Isopropyl > Alcohol on the end of some "Q-tip" to get the stubborn stuff off..... > > I had never heard of this particular cleaning method (Eyelead Sensor > Cleaner), but they are available from > > http://photographylife.com/product/sensor-gel-stick > > $50 > > Just as a point, even sensors that do not have AA filters in front, have > some form of protection from the "elements"..... You can not expose an IC, > which is what a Digital imaging sensor really is, to air, crud, and > humidity. If nothing else, the tiny wires that connect the IC to the rest > of your camera require this protection. It is usually a "glass" plate. > The > AA filter is a filter coating on top of the glass..... No coating, no > filter. > > > Frank Filippone > Red735i at verizon.net > > All manufacturers recommend that, they would, wouldn't they - at what they > charge it must be quite a steady source of income. I recently bought what > the Leica technicians use, the Eyelead Sensor Cleaner, and it works very > efficiently and very well - as does my long time cleaning system, the > SensorKlear - on the Fuji X-Pro 1 and the XE-1, which do not have the AA > filter, just like the Leica digitals. The Nikon D800E is less of a risk, > because it does have a filter on the sensor, and basically, you are > cleaning > the filter, not the sensor. > The Nikon D810 dispenses with the AA filter assembly altogether. I have > been > cleaning the sensors myself ever since I switched to digital with the Nikon > D70, with not a single problem as yet, IMHO, it is a very simple thing to > do. > > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information >