iyayy

hi,
sharing my opinion on OS and IBIS.
i would prefer not to have it.
from my observation on images thus far, it seems that images from primes that is shot properly from non IS gears have more pop and 3d feel to it, more so if the lens construction are simpler.
 
while i do not deny that it helps to handheld at low shutter speed, the value is only for that particular low shutter or shaky hands moments. When i want razor sharp images, the IS would introduce some micro vibrations (IS typically works by vibrating to compensate movements) and these micro vibrations would affect the micro details and micro contrast from images, not to mention OS adds another stabilization lens, and IBIS requires the sensor to be mounted on moving axis instead of fixed place. 
i think manufacturer also realize the limitation of OS/IBIS, and includes the option to turn it off, and encourages user to turn off IS when mounting on tripod.
other factors included would be mirror shake, shutter shake, pixel density, etc.. previous gen cameras have low pixel density, so the IS can get away with those.. but higher density pixel would show the limits. This can be seen from Olympus watercolor effect, and there was also some issue of A7II images sometimes appear soft despite being in focus, which i assume is caused by shutter speed that conflicts with IBIS.
of course, i can say that im pixel peeping, but reason why i pixel peep, is because there are a lot of time that i have to crop images, simply because i cant reach that far from my shooting position. sometimes is because i dont have time to wait, getting those valuable moments captured in wrong framing is better than not getting any moment in a correct framing.. i can always crop from wrong frame.
 
i also have personal experience using canon 6d and 100mm macro, and 100mm macro L, and most of the time, on razor sharpness 100 non L wins, i cant seem to get that razor sharpness from the L lens. i do prefer the L because it has more bokeh gradient and easier to use, but i would want to start with a sharp images in the first place.
 
if im not looking at details i'd better off with a compact or an iphone6. it gets the job done, it's not like OS/IBIS really helps in low light when things are moving.. and people always moves..