Linked Questions

0
votes
2answers
3k views

How does a camera in an automatic mode choose what exposure, aperture and ISO to use? [duplicate]

For example: Does the camera detect if the scene contains fast-moving objects and if so use a shorter shutter speed? Does it detect if the entire scene is beyond the hyperfocal distance, and there's ...
149
votes
10answers
53k views

What is the “exposure triangle”?

What is the exposure triangle? How do the "sides" affect my photographs?
37
votes
4answers
4k views

How do I interpret an MTF Chart?

As part of how Canon (and other lens makers) give technical information about their lenses, they supply an MTF (Modulation Transfer Function) chart. How do I read and interpret what the chart is ...
9
votes
3answers
5k views

How does a film camera perform exposure compensation?

I have a Nikon D3x, a Nikon F6 and a Nikon F3/T. It is my understanding that, on a digital camera, "exposure compensation" actually alters signal amplification, similar but not identical to changing ...
9
votes
4answers
6k views

What is the relationship between ISO, aperture, and shutter speed?

I know digital cameras have ISO options, and that ISO is the camera's sensitivity to light, but if you set higher ISO then you can get a noisy image. I also know there are two other camera options, ...
7
votes
4answers
975 views

Is there a good use for program exposure modes?

The question about how programed exposure modes work made me wonder. Are there situations where a program mode is good for some reason, not just as a convenience or because you don't understand ...
4
votes
1answer
234 views

How do automatic cameras know the right depth of field?

When shooting in Shutter and Aperture priority, the camera just needs to meter the scene and come up with the corresponding f-stop or shutter speed, a very algothrimitic and simple process. However, ...
1
vote
2answers
858 views

Does exposure compensation affect shutter speed in aperture value mode?

When I am shooting in AV/aperture value mode, and I switch to +1 EC, will it affect my shutter speed?
1
vote
4answers
325 views

How to shoot Blue Angels directly overhead from my rooftop deck with Olympus EP1

the Blue Angels will be flying over my rooftop deck this weekend. I have an Olympus EP1 with a Lumix 1:4-5.6/45-200 zoom lens. I have fashioned a shade hood to eliminate reflective glare from LCD ...
4
votes
2answers
175 views

How does a camera determine aperture when in shutter-priority mode?

Recently I experimented with using shutter-priority ("Tv" on my Canon DSLR) for images shot from my kayak, because movement is a constant factor in that situation (even if there's no wind, there's ...
1
vote
2answers
313 views

How can I make a Canon DSLR's auto ISO prefer faster shutter speeds to prevent motion blur?

My non camera savvy mom is borrowing my t5i with a stock 18-135mm f/3.5 lens so I am fiddling with the settings so she can just point and shoot with no extra hassle. I thought simply putting it to ...