Originally posted by normhead The last fall back of the outflanked, go to the "all things being equal" arguments... in other words, rely on fantasy.
well, we
are talking about something that doesn't exist, and comparing two objects that would be built in the present day using the same methods of manufacture, so yeah, all else
is equal. current sensor designs with large pixels are manufactured still, in, as noted, the nikon D4/s, the canon 1D C/X and the current crop of medium format CCD and CMOS sensors. they all perform fantastically in low light.
as for film guys coming to digital, i'm a video guy, coming from tiny ccd dv cameras up to crop sensor slr and mirrorless cameras. mostly documentary shooting with available light. every bit of light i'm able to drink up is worth it, and in that regard the physical size of the sensor has made a much larger difference than number of pixels -- you won't know the difference between 2k and 4k in a theater projection, nor between 720 and 1080 (i've just tested this on a live audience, btw -- nobody noticed except the projectionist), but you will know the difference between video shot on a nikon 1 cx sensor and a d5300 crop sensor. you'll be able to get bigger prints with more pixels on the same sensor, but you won't print bigger -- sharpness will fall off and you'll downsample and see no real benefit compared to a camera with larger pixels (which will still do better in low light). one set of problems (pixelation) for another (softness), and you lose out on a camera that can damn near see in the dark.
i've been shooting film for all of six months, processed my own roll for the first time yesterday. optics is optics no matter what your medium, and it's much older than photography.
a backlit sensor is a whole set of problems i don't want.
---------- Post added 02-19-15 at 10:29 AM ----------
wait a sec -- how would film guys come in to talk about bigger pixels? at every sensitivity, i only hear about folks either going after the finest possible grain or for tones that fit what they're trying to do. most folks shoot 35 and the quest for ever finer grain is more akin to more photosites on a given sensor format.