Originally Posted by
Mike Buckley
We all learn differently. You are making so much progress in such a relatively short period of time that it seems reasonable to me that you should continue on whatever learning path you have already determined.
As for using both manual and aperture priority processes, the only fundamental reason I can think of for using both during your learning curve is when one method is particularly more helpful in a given situation than the other method. You might be better off mastering one process before moving on to master the other process.
Another factor to help you make your decision about that is to consider what your short-term goal is. As an example, if your goal while at Cape Cod was to become more and more comfortable using manual mode, that goal would have guided you in the obvious direction even if it meant making certain other sacrifices. However, if your goal was to get the very best shot at the lowest ISO possible when hand holding the camera without having to remember to manually check your ISO value and shutter speed while being under the pressure of rapidly changing light in freezing cold and when being perhaps sleep-deprived, that goal perhaps would have guided to learning how to use aperture priority first and then later when combined with auto ISO.
The one point you should feel comfortable with is that once you have mastered using manual mode -- and you seem to be advancing well with it -- you'll be able to very easily switch to using aperture priority with or without auto ISO.
The only thing that really matters is to appreciate that there are many modes you could have used to make the exact same photo -- shutter priority, aperture priority, manual mode and each of those with or without auto ISO. I mention it in that context because too many people insist that there is always a "best" method when I don't believe that's the case. I only mentioned the use of auto ISO combined with aperture priority as a solution to your complaint that you forgot to attend to the ISO value.