Hi @paulav
I have an FP3+ and the camera takes images ‘immediately’ however the 4 x 12MP is a 48 Mega Photosites (48MP) which could be better described as 48MPs
It’s a Quad Bayer, which means four photosensitive sensors (2 green, 1 red and 1 blue) are used to create ‘the best colour’ so the output is supposed to be an enhanced 12MPx
I really don’t think there is much difference in the output and for some it may not be an improvement, depending upon use.
One downside is that the re-calculating the 48M to 12M takes a while so there is a delay in saving, very noticeable if you use HDR