Borrowed once a 24/1.4II for a weekend. Very good on my 5d2 and the 1d4. Bad copies exist. The good thing is it is a Canon- Canon combination, so leave this problem to your CPS. Loosing time once, winning good IQ further on.
So the sensor of the Sony RX100 is a very good piece of engineering. It has only 1/7 of the sqare size of an FF, and shows very good results, when I have to push them because of underexposure. I had an 50D as a backup to my 5D2, didnt want to use it on higher ISO than 800.... I would like to see a better APS-C sensor from Canon, doenst matter if it has 12, 16 or 24 MP......
If this stain is not "sticky", i.e. doesnt not leave dirt on your fingers and causes stains elsewhere: this is your cameras first scar and shows, it is yours in a case of doubt. I take care of my equipment, but as long as it doesnt take effect on IQ or functionality, I wouldnt care.
35L. On my 5d3 it gives me, mostly used at 1.6 to 2.8 the ability, to shoot people in artificial light like in a coffeehause or a nightclub, with a bit of surrounding. Beautiful color, bokeh; with the mk3 the safety to get sharp picture although it has a thin dof.
Everytime something new is out in the photografic world, there is an itch: must have (5D3, 70-200/2,8II etc). Then there is some interesting concepts like the Fuji 100, now with an s; or the Sony RX100. They are: lets take a closer look. The M- Series: nothing. And I'm a Canonuser since 1983.
Nice idea or not (I wouldnt need that feature): its not good to fill the card to the end. This can cause trouble. I would change my 32gb card when there are only 50 left from the apr. 1000 possible files. My 2€- cents.
Overwritten can mean: new files taking their places, so they are gone. or: only "this place is free and usable" then you have a chance. (You never now if the new files are on the same place physically....)
Anyway: when youre not sure, let one of the recommended porgrams look for them.