Question about changing f stop exposure for class

[Shyy]

MarkInSF wrote:

MrMojo wrote:

1. Why are you required to use a B&W fllm camera?

2. What is the goal of the exercise i.e why 3 stops under/over exposure?

Many photography classes are taught by Luddites. They think digital is a passing fad and only film is of lasting significance. They're idiots who require their students buy equipment they'll probably never use again and learn irrelevant skills when they could be doing something useful. Most are high school football coaches in real life. Or community college volleyball coaches.

Tell me about it, cost me $500 and that's not the tuition lol. But I have to admit it does feel good when you develop a picture correctly.

 

[Tom_N]

Shyy wrote:

Abit confused with the iso, is giing from ISO 100 to 200 to 300 considered each a full stop?

A full stop is a change that results in a doubling or halving of the (light * time), if all of the other factors remain equal.

For aperture, you multiply or divide by SQRT(2) (because aperture is an idealized measure of the radius of a circle, but it's the area that determines how much light gets in).

For the amount of the the shutter stays open, or for ISO, you multiply or divide by 2.

 

[Barrie Davis]

Shyy wrote:
1. This is a black and white film course

Black and white film? WHY? Does he think he's equipping you for the future?

And you say you have paid $500? Hmmm....

2. I think he wants to pick the ones that is most exposed correctly and to show us how to manipulate the aperture with shutter speed. I am going to work on this over the weekend, can't wait! Any good subjects you guys recommend?

 

[baloo_buc]

Very strange lens you have with minimum aperture of f/4 and maximum f/2 (i.e. 2 stops).