F-stops and exposure.
Click on the correct answer
You can have more than one attempt at each question but each wrong guess will affect your score.
1
An aperture and shutter combination of f-11 at 1/125th of a second will produce the same exposure, using the same film speed, as which of the following ?
f-8 at 1/60th of a second.
f-8 at 1/250th of a second.
f-16 at 1/30th of a second.
f-5.6 at 1/250th of asecond.
2
If a combination of f-16 at 1/30th of a second yields the correct exposure what effect will be seen by increasing the aperture to f-8 ?
Underexposure.
Overexposure.
Nothing.
Reduced film speed.
3
My light-meter tells me I need an aperture of f-11 using 400 ASA film. If I am actually using 100 ASA film what aperture should I set ?
f-16
f-22
f-8
f-5.6
4
If I change my shutter speed from 1/250th of a second to 1/60th of a second how much more light will reach the film ?
Half as much.
Twice as much.
Four times as much.
Thee times as much.
5
What is the difference , in stops, between f-4 at 1/60th of a second and f-16 at 1/60th of a second ?
2 stops.
4 stops
6 stops
8 stops
6
What is the difference , in stops, between f-4 at 1/60th of a second and f-8 at 1/30th of a second ?
1 stop.
2 stops.
3 stops.
4 stops.
7
A film with a speed of 400 ASA is;
Twice as sensitive as 800 ASA film.
Half as sensitive as 200 ASA film.
Twice as sensitive as 200 ASA film.
Twice as sensitive as 100 ASA film
8
If I wanted to give my film 2 stops more exposure I could do which of the following ?
Increase the size of the aperture. (smaller f-number)
Reduce the size of the aperture. (larger f-number)
Increase the shutter speed. (faster)
Any of the above.
9
A setting of f-8 at 1/125th of a second using 100 ASA film would be equivalent to which of the following ?
f-11 at 1/125th of a second using 200 ASA film.
f-4 at 1/500th of a second using 100 ASA film.
f-11 at 1/30th of a second using 50 ASA film.
None of the above.
10
Which is the faster lens ?
50 mm f-2.8
300mm f-2.8
90mm f-2
50mm f1.4