It is extremely helpful to put it, but it is not mandatory. I, too, used to scramble and put it in. Then, I got lazy. I have to open my original in another program besides what I usually use for post processing, and there are some weeks I just don't have enough time (those 11:45 pm, eastern, shots will get ya!). I try to remember what the settings were when I shoot, but that isn't really reliable.
It can be added later. |