Just curious, what cameras does it hammer?
From an article by Andy Hendriksen written in 2014
"( Leicas ) sensor is a CCD, instead of the modern and more commonly used CMOS technology. Many attribute the Leica's incredible tonality and unique looking files to the fact that they chose a CCD sensor for this camera."
"Arguably the biggest and most notable issue with the Leica M8 was the sensor's almost nonexistent IR filter. Leica removed the IR and anti-aliasing filters from the sensor to increase sharpness, but unfortunately it was at the cost of increased IR sensitivity that caused black colors in some lighting to come out purple. To remedy this, Leica offered two free IR cut filters to everyone that purchased an M8, and included them with all future M8 sales. With an IR cut filter on your lens, there are no problems, but it is important to be aware that you will absolutely need one on every lens you plan to use with this camera.
The flip side of this, however, is that images from the Kodak sensor are shockingly sharp. Paired with high quality glass from Leica or Zeiss, you'll end up with files that are as sharp as anything on the market today. The sharpness is mind blowing, and it's fantastic to see a sensor do these incredible lenses justice."
".......Unless you are a professional photographer with specific technical requirements, there's simply no reason to dwell on what is ground-breaking today. I would love if the autofocus on my X100 were faster, or my Leica handled high ISO a little bit better. But I often still find myself picking my jaw up off the floor when I look at the files from either camera.
They were brilliant when they were new, and they're just as brilliant today." - Authors bold type
http://www.drewtensils.com/tools/leica-m8-eight-years-later
If one buys a preowned Leica M8 & lens - Then, upon appliication, Leica despatches out to you, two IR cut filters for free, zilch, nothing, zero, nada
If one ever does encounter a problem with your Leica camera, then the person to talk to is Andrea Frankl - Possibly Gods own 'Service Representative' on earth.....and brilliant