Pls show examples where increasing brightness in post better than increasing ISO.

Started Oct 1, 2013 | Discussions thread
bobn2 Forum Pro • Posts: 59,126
Re: Examples

rubank wrote:

The simple fact is
that you have to choose: will you sacrifice the highlights or the shadows. With a scene where the DR is beyond what your camera can capture in a single exposure, this choice is of greater importance than what ISO routine you prefer.

Do you want to preserve highlights it is often better to choose underexposure at low ISO, at the cost of shadow colour and noise (esp. banding). If shadows are more important it is often better to choose high ISO, at the cost of highlight rendering.

Heavy shadow lifting commonly leeds to colour shift and banding noise, at least with badly lit scenery where major parts of the image is in deep shadow.
In daylight situations with minor parts of the image in deep shadow, lifting in post is mostly not a problem (unless you have an ISO-full camera).

These are my findings, based on extensive practice and not on science.

The point about knowing the science is that it lets you take out of the loop a lot of the 'extensive practice'. That is, if you know what's going on, you have a fir idea what's going to work in the first place, and particularly, how do you choose between this 'highlight' and 'shadow' DR. The answer is quite simple in the end, you meter the highlights to take them just up to the limit and then get as much shadow legroom as you need. Essentially, with exposure management, thge science turns a black art into simple and regular procedures. No more 'correct is when you get the result you want' or 'the important thing is to nail exposure, but you just have to learn how by experience'.

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