Research task for week 3

ELearn research question for Workshop 2 - Studio

Not so much research for week 3 but revision of week 2.

These questions relate to the use of studio flash equipment.  Note that some copies of the Pulso instruction sheet handed out in class may have Pulso 4 written where Pulso 2 should be, just change it, we have no Pulso 4 units.

1.      What is the Guide Aperture (GA) of both the Pulso and Primo units?
at 2m with ISO 100 f64 or a guide number of 128

2.      Let’s assume you had a flash unit with a GA of f64.  With a subject placed 4m from the flash head the f-number to use to achieve correct exposure would be;

      [a]        f8

      [b]        f22

      [c]        f32

      [d]        f64

3.      Using the same flash unit as in question 2 above and a subject placed 16m from the flash head the f-number to use to achieve correct exposure would be;

      [a]        f8

      [b]        f22

      [c]        f32

      [d]        f64

4.      Changing the Pulso 2 power setting from 10 to 9;

[a]        halves the output

[b]        reduces the output by 50%

[c]        reduces the output by ‘1-stop’ (photo lingo)

[d]        would require the use of a lens aperture 1 stop wider to achieve the          same exposure

[e]        I think all of the above

[f]        all of the above and I’m not guessing

5.      Describe what you understand by the term Symmetrical Power Distribution.

Symmetrical power distribution means that when more than one flash head is plugged in the power is distributed symmetrically or evenly