Thanks - I am a *&^%$# when it comes to posting a question without checking the threads first.
Appreciate your comments on FF vs APS-C which mirror my views and experience although I haven't used a state of the art APS-C much recently. My thoughts are that I could pick up a 5D for around £400 and buy a 50mm 1.8 for not very much plus, maybe later, a couple more primes. It seems a 'no-brainer' at this price and, with the lower resolution sensor, I think there's less need to invest in top quality (ie VERY expensive) lenses
My own little tests at home have shown me that at lower ISO's and in images up to and including A3, when viewed normally and ignoring anything such as focal length and aperture combinations, there's next to no difference in actual image quality between my G1 (MFT,) 20D (APS-C) and 5D. IMVHO the 5D only pulls ahead as the ISO rises and also if/when the magnifying glass is brought out to look for any difference that can possibly be seen.
For me the advantages of the 5D include using lenses at their intended focal length... and by that I mean as I used them years ago on my SLR's, and also being able to shoot at any ISO up to and including ISO 3200.
The disadvantages are, again IMVHO...
It's a sensor dust magnet.
The VF is prone to debris.
There's no modern stuff - no IBIS, no sensor cleaning, no built in flash, no micro adjust (but I've never needed it.)
Also, the FoV thing is a twin edged sword, IMVHO. You may end up using longer focal length lenses (than you'd use with MFT or APS-C) at smaller apertures and this has implications for camera + lens bulk and weight and also ISO settings and / or shutter speeds.
For example. Lets imagine that I want to take a shot with my MFT with a 25mm lens at f4, and ISO 100 to get a reasonable shutter speed. With my 5D to get (about) the same image I'll be using a 50mm at f8 with the resultant implications for ISO and/or shutter speed.
However, ignoring actual image quality for a moment the overall look that is produced by a camera and lens combination at certain camera to subject distances, focal lengths and apertures is difficult to reproduce using a different combination. That may be enough to convince you that you need a 5D
