I was shooting in a lot of outdoor sports at f2.0 & f/2.8 @ ISO 100 & on a lark 160 (said to be Canon's "native ISO". I dunno why this is the case either), +1 EV and noticed that at Aperture Priority the shutter runs around 1/500 to 1/3200. At that shutter speed everything pretty much freezes which detracts to the sense of motion.
Now my question is whether ISO 50 wouldn't be a detrimental to image quality. I know every time you increase ISO more noise is introduce. Would it be the same with ISO 50? Other than ND filters & stopping down an f-stop is there another way to cut the amount of light that enters the camera?
ISO 50 will be extremely clean, however you have to watch your highlights very carefully. As far as I know, it is really just ISO 100 pulled a stop, so you are going to have almost no headroom in the highlights.
I agree with the previous two posters. I've used ISO 50 on my 5D II several times, and I've been very pleased with the results. However, both times I was shooting waterfalls, and I shot stopped way down and at ISO 50 in order to get a longer shutter speed - a different situation than yours.
I use ISO 50 all the time, in studio (to open up the lenses) and for long exposures. I did also use it to be able to shoot at f/1.2 in broad daylight without hitting 1/8000.
dolina wrote:
I was shooting in a lot of outdoor sports at f2.0 & f/2.8 @ ISO 100 & on a lark 160 (said to be Canon's "native ISO". I dunno why this is the case either), +1 EV and noticed that at Aperture Priority the shutter runs around 1/500 to 1/3200. At that shutter speed everything pretty much freezes which detracts to the sense of motion.
Now my question is whether ISO 50 wouldn't be a detrimental to image quality. I know every time you increase ISO more noise is introduce. Would it be the same with ISO 50? Other than ND filters & stopping down an f-stop is there another way to cut the amount of light that enters the camera?...Show more →
ND are probably best, ISO50 is kind of crappy in that it loses an entire stop of DR, on a 5D2 all it does is overexpose ISO100 by 1 stop I seem to recall, of course that does let a stop more light be collected but at that low down i'm not sure is half as important as losing so much DR
