Antarctica

Antarctica
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11
votes
3answers
1k views

If a rolling shutter travels from top to bottom, why does this image seem to show skew in the other direction?

In the picture below you can see that the rolling shutter moves downwards...i.e., it exposes the light to the sensor from top to bottom. . So the information that the sensor recieves is a bit ...
17
votes
3answers
1k views

Why do electronic shutters expose row by row?

This question connects with my previous question, Why do cameras use a slit between two curtains rather than exposing the entire sensor instantly? This question is about why the slit thing comes with ...
5
votes
5answers
394 views

Why do cameras use a slit between two curtains rather than exposing the entire sensor instantly?

Why is it more effective to use "a slit travelling from top to bottom of the sensor" in faster shutter speeds, rather than exposing the entire sensor instantly? And the slit thing only comes in fast ...
0
votes
1answer
149 views

Why the ball is not round? [duplicate]

Why the ball is not round on following crop: SS = 1/60 What's going on?
1
vote
1answer
175 views

Measure rolling shutter severity of image sensor scientifically [closed]

Is there a way how to measure the "severity" of the rolling shutter (RS) effect for a given image sensor? By severity I mean how slow the image read-out is done for every single frame. The slower the ...
2
votes
1answer
145 views

Why is there a vertical bar of brighter exposure when photographing lightning?

I recently took pictures of a lightning storm using my camera phone (Samsung Galaxy S3). In several of the shots where I managed to capture lightning, a lighter (brighter?) vertical section sometimes ...
1
vote
2answers
623 views

What is the advantage of rolling shutters, if any? [duplicate]

I have read a lot about global and rolling shutters, and it seems from what I have read that the global shutter is better than the rolling shutters when it comes to moving objects. On the other side ...
4
votes
2answers
3k views

Do modern DSLRs use a rolling or global shutter?

I recently learned about these technologies and the differences between them. Which one of these do modern DSLR cameras (esp. Canon and Nikon models) come with?
16
votes
5answers
7k views

What is a rolling shutter? When do I have to be aware of it?

In answer to another question, Adam Davis writes: Your camera complicates this by using a rolling shutter above a given speed (usually around 1/200. This means that only a portion of the ...
13
votes
3answers
3k views

Why do DSLRs in movie mode have a rolling shutter instead of a global shutter?

Correct me if I'm wrong: When I take a picture, the sensor gathers the light information "as a whole" during the exposure time and then saves it in the card. When I make a movie, the sensor scans ...
2
votes
2answers
516 views

Xenon flash with rolling shutter

I'm working on a cmos image sensor that has a electronic rolling shutter, at this time I'm operating at 15fps and getting RAW data from it. I was wondering how to combine a xenon flash with the ...