What I've learned is:
- you can get bokeh at f4.5.
- the flash works best at f4.5 and 1/100th.
- the shutter speed has unexpected results on flash photos; that is, the exposure doesn't increase in proportion to the slowness of the shutter - though you can see an effect in the background ambient lighting.
There are two anomalous exposures, at f11 1/50th and at f4.5 1/10th. I just can't explain what happened with those two, how they're so overexposed.
Next, a roll at f4.5 and 1/100th, with flash, to check out its consistency, and how it works with different compositions.
And I need to look at getting higher contrast when dev'ing.