Keith
The best camera is one that still works!
Hi Keith - I'll try to do some carefully controlled test shots for you, when my M8 gets back from Solms. I took a couple-hundred shots or so with the camera I had over the christmas holidays, but none of them under really controlled conditions. However, it was obvious that in low-light the character of the grain from the RD1s is much better.
Naturally, in really low-light the D90 totally blows the other two cameras away - with nice film-like grain too! But I don't like using it (and 'officially' I gave it to my partner now - so I have to ask her permission when I borrow it) 😉
That would be interesting Mani ... the high ISO images I've seen from the Epson impressed me with the lack of noise and what there is is very grain like I must admit ... I just thought they lacked a little sparkle compared to the M8's files if you know what I mean!
Handy for you having both cameras to compare for your own evaluation ... because we all lie terribly about our cameras around here! 😛