In John Harrington’s Photo Business and News blog today, he asked the following questions:
Do you know what circles of confusion are?
Yes.
Why an 85mm f1.2 looks better at f4 than an 85mm f2.8 at the same aperture?
I didn’t (exactly), but I do now. THANKS! I did know that no lens is at its very sharpest at the widest setting, but I hadn’t processed exactly why.
Do you know what flash duration is?
Yes. It’s essential for understanding flash fill, especially in low light situations where you have to use a slow shutter to let the background burn in.
What about Scheimpflug?
Yes, that too. (Thanks, Holman!)
Ok, let’s try something easier – what is the color temperature of Tungsten?
3200
What about guide numbers? How are they calculated?
My understanding of guide numbers is that they are an arcane bit of lighting calculations that I hope I never have to use in real life. Thank goodness for modern light meters! (If there’s a good reason for knowing guide numbers when using modern lighting and light meters, can someone explain it?)
When a client says they want a “high key” image – do you get it?
Brightly lit, low contrast, minimal shadows or dark areas, often a white background.
When a client says we pay “2/10 net 30 are you ok with that?” What will be the impact to you on a $500 invoice? a $9,800 invoice? (and show your work.)
OK, I had to look this one up:
“a 2% discount is provided if payment is received within 10 days of the delivery of goods, and that full payment is expected within 30 days” (thanks Wikipedia)
When a client asks if you have a COI, what do you answer?
I’m not Jill Greenberg, and that little stunt she pulled was incredibly unprofessional. I’ve shot for campaigns that are the opposite of my personal views, and done my best to portray the candidate in a good light.