When using a finite objective, what's the best way to control exposure?
Since there's no diaphragm, it would appear to leave only:
- shutter speed
- ISO
- intensity/duration of illumination (eg. flash power).
For illumination I have the option of flashes, Jansjo LED lamps, and 300w equivalent CFLs.
I was surprised that I didn't find any actual discussion of this yet.